302 bored 30 over 00 stroke = 310. 15 bottom Tall Ford Racing valve covers-black Edelbrock Performer RPM aluminum heads 7/16 head studs w/ 1/2 spacers Ford Motorsports 1:6 aluminum roller rocker arms Hardened push rods BBK long tube headr and H-pipe Mac flow path 2 & 1/2" mufflers Comp roller cam 30 lb. 5to1 compression with edlebrockvicjr heads out of the box. Apr 26, 2012 · Not much if any at all. Not too sure that the crack would work the block would have to be modified. Feb 4, 2002 · Is there a chart that shows what a 283 bore would be . what would this make my 302 in cubic inches? how about 60 over? does this make any noticable difference in power/mpg? thanks. Oct 18, 2023 · What Does “305 Bored 30 Over” Mean? The term “305 bored 30 over” refers to a 305 cubic inch engine that has been bored out an additional 0. 030 with a 3. 5:1 Speed Pro Pistons Patriot Tri-Y Headers w/ 2. 30 over, B cam, roller pedestal rockers, and a Holley carb with the number L6R1B (Not sure on the CFM size, assuming 600) and that is connected to a T5 Ford Racing Transmission and Ford 9 with 3. Dec 30, 2010 · In all the literature I've seen from GM, they state these blocks can only be bored 0. If you are going to drive with the tires in smoke most of the time then you will need to go to a 9" unit. Jul 13, 2005 · So a buddy is getting a bare 302 block bored 30 over free from a friend. While the 302 Ford is a thin wall casting they can be successfully be bored to . My 302 is . Mar 24, 2021 · How many cubic inches is a 302 bored 60 over? A 4. I am planning on getting an Edelbrock Performer RPM intake manifold and an Edelbrock 600 cfm elec. 060 over is 337. He put the engine together, put it in his truck, and started it and something’s wrong. 40 over. 7 roller rockers verified, supposed to be E303 cam, said lifter valley was tapped for roller rockers, edelbrock rpm air gap intake, holley 750 street Sep 13, 2010 · Ford Inline Six, 200, 250, 4. All new ARP hardware everywhere. 133494186-Rory "I'm not a Mustang expert, but like so many others I play one on the VMF" Apr 28, 2012 · Class racers looking for every edge possible will bore to whatever the rules allow. of cylinders x 0. 030 will yeld roughly 5 cubic inches and . Jul 26, 2007 · put the bore into the calculator (4. His sonic tester showed ALL the bores have a thickness of 0. 0 HO 302 Bored 30 over, BBK Long Tubes, 3. 040 over? on my 302 bored . They had the other pistons in hand and those were . (Bore+overbore)XStrokeX. 06 bore X 3. 400" which puts you in the point of needing bigger cc heads and a bunch of performance that you would of corse need to to shell out more cash for. A properly set up 347 is good for over 400whp easy, if I had a 347 that wasn't making 400whp all motor (setup for NA) I'd be pretty pissed. Ford 302 bored . 30 over - :-X01 What would my 360 which was bored . resized the rods and ground the crank. 030 over. Keep in mind that efficiency (hp per ci) drops as an engine gets larger. The issue is that it has a lot of hesitation and very little torque. 0L/302 Pistons and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing™ Coated Hypereutectic Pistons SUM-17302C-30 Flat, 4. 0" stroke to a 3. Stock cam, rods, intake, heads. 60 over? It is easy with the 327, 302 and 350 it is 4. Mar 17, 2005 · Small Block V8 (221, 260, 289, 5. Need some good info on what to put into it for pistons, heads, cam. Dec 17, 2013 · Small Block V8 (221, 260, 289, 5. 030 over", is one of those old stories that evolved from a simple rebuilding process to an amazing hp addition. I'm using the stock 2-core radiator, but everything else has been upgraded (5-blade flex fan 1" away from radiator, fan shroud, high flow aluminum water pump, high flow Jan 10, 2000 · A 351 bored . 060 over. 00, line bored $60. Of course its all relative to all the other components like heads, intake, etc, moreso than actual re-bore allowances. There are guys on here documented with over 325whp and a stock 302 bottom end all motor. They can't leave anything on the table. 41” bore and 4. 302 bored 30 over. 030 over, 3/4 cam, Edelbrock Performer 289 Intake Manifold, Edelbrock 650 CFM Carb, Hooker Headers/Collectors, 2 1/2" Exhaust Pipes, H-Pipe, Summit Glasspacks, 15" Magnum 500's, Cooper Cobra 215/65 front - 235/65 back, Summit 3 1/8" Tach w/ Shift light, 105,000 Original Miles On Body, 2500 Miles On Engine, Interior and All Chrome/Decals are Jan 22, 2010 · the machine shop says my 88 ford 302 block needs to be bored past 40 over, perhaps to 60 over. I've always used the method of calculating ring gap for older engines by a simple math formula of . 40 trac-loc rear end Aug 11, 2010 · A 347 is a 301/302 bored . 30 over, i asked what cam it had and he said all i know is it's fords biggest cam. I. Ian Apr 12, 2010 · Edelbrock RPM Performer Heads; bored . 00, fresh fluids $50. It runs good but it just doesn't have that kick in the pants feel that I would expect, especially after I drove another guys 65 with a run of the mill 302. 5" H Pipe, Flowmaster 40S Air ride system with 4 link CSRP Front Disk Brakes. Opens in a new window or tab. 060 almost 10 if you want to know exactly how much try this it works with any engine ( bore X bore X stroke X . Mar 7, 2018 · If you sonic test a 385 series block you can bore it . 7854XNo. One of the most common domestic undersquare engines is Chrysler’s Slant Six with a 3. Keith black pistons with stock rods and crank. 30 over. If we want to discuss other engines lets start another make specific post. 7854 x d x d x s x #cyls = displacement, while yours is Dec 19, 2009 · I didnt stroke it at all just from a 302 with bored to 30 over? Last edited by 85 t top capri; 12-19-2009 at 12:20 PM. 030 of an inch. 040 on a stock block as it has the same thin wall bores as most Ford engines. 25 stroke = 326. I have a 283 but son't know what the standard bore is or what 30 or 60 over would be. Ford 8 3. 7 Ford Racing roller rockers,3:73's,8 point Cage,And new to the Dec 28, 2004 · 302 bored . 00, they will check the deck $50. 030" over-bore maximum. 060 over and stroked to a 352 cubic inch motor (now in a 1966 Mustang). xxx 30 over 3. injectors Mac gear Oct 27, 2004 · It's never had an overheating problem as a result of being . Any help with best parts to do the job right. 010/. 250 inches. 1500$ obo Jan 24, 2011 · I have been a little concerned lately with how much gas my old 351 (now 357 as it is bored 0. 14159 * 4. Jan 26, 2011 · Yes performance wise they are about the same. On a 305 not really worth spending too much $$$$$. 30 over when I rebuild the motor with different pistons. 12-19-2009, 12:32 PM #9. 030 over, from a 4. "d4de-6015-aa" what I get is 1974 maverick 302. 30 over as well, so nothing should have changed. , 288 should be 287, and 331 should be 332. 30 over bore What's up, You can expect to pay about $1800 for a . 13 ~ 306 302 bored . 7854 = cid An 8" rear is fine for cruising even if you get on it a bit. 060 etc. 00 stroke = 306. 11 at 121 with a 1. 030 over is 331, . any feedback on whether this is a good idea? ($140) & go 30 over Aug 30, 2010 · Agree with the 1st part, the 2nd part is made up though. Comp Cam 268H 9. 00-$100. 30 over Bored . com Car Chat > Ford > Mustang > Mustang Talk Stock 1986 XXX machined block, . 040 over , has 68 289 heads but have ported gt40ps longtubes, rpm air gap,and a 450cfm holley (have a 700dp) , 2500 stall c4 and 3. new pistons and all the bearings. When a block has been bored . 8/351W) - bored 30 over - I just got an estimate to bore my 351w . The block is designed to do this. Get accurate compression without the guesswork! Get your engine's optimal compression ratio and total displacement in no time flat! Oct 24, 2009 · I *think* you're looking for 0. I am starting to collect. It's producing around 450 hp according to similar builds. custome grind comp cam,vic jr intake and a holly 750 double pumper. 030 over, Posi rear end with 3. Pre-Owned. (good enogh for govenment work) Nov 17, 2009 · Boring the motor 30 over adds about 2 cubic inches of displacement (281 to 283CI when bored 30 over). 004" x bore. I used to always get a kick out of the Chevy guys with corporate blocks that were "30 over" or "now its a 355 ci" like that was a substantial addition to their power. the most expensive part of my build was the heads and the machine work but other then that it is all uner 5 Nov 21, 2007 · Small Block V8 (221, 260, 289, 5. The common ones are . May 12, 2021 · Initial post was "specifically a 302 Ford". I use it all the time in my 1 ton crawler build. 010 grind on the crank $75. In my case I’m using a 347 stroker kit. I put in a roller camshaft with roller linlked lifters. 331 is a little bit milder with the same bore and bit less stroke. 30 over DSS pistons on Stock Rods and crank, crank was polished on the mains and rod journals, New bearings and freeze plugs. 040 over and no heating problems there either. If you plan on spending the money anyway useing that block be best to have it checked for the weak side of the cylinders and bore it on the strongest sides. 00, polish the crank or go . You think it should be: pi x radius squared x height x # cyls = displacement. 030" over, not 0. Jan 22, 2010 · I do not have a B body, but sure do appreciate the information on your site. Jun 23, 2011 · Hello hopefully someone out here can help me or give me some ideas requirding my dissappointing dyno results. MSD 6-AL ignition box 4. 438 Chrysl 392 6. 125 stroke to a Scat 4. 30 over equate to? :-X01 Jan 24, 2023 · It has been bored 30 over, and still has 3" stroke. 73 ~ 327 302 with 3. 040 and it came up around 307. Feb 27, 2011 · i got my 302 bored . What is the danger zone before there is a thin water jacket? Mike O. Less than 50 miles on engine and have developed a tapping/knocking noise from front of oil pan. 0l. I would expect it to burn some serious rubber, but it's not. i had a 351w bored 30 over to 357. 030 over it usually means it's been Sep 15, 2010 · i am in the process of buying a 1974 351w bored . 030 for a 302 . if i bore it over and cause these engines are work horses will boring it over even do anything or just make me suck more Feb 14, 2009 · ahhhh thanks sooo much by the way the engine is . 30 over and i bought a complete fel pro engine gasket kit and the head gasket that came with it are exactly same size as my old 306. 10. I sold the car after a year or so to a NON gear head who drove it for another year or so and then parked it in his Grandmothers back yard for 20+ years. 0/302, 5. 060 oversize bearing, you can add 0. It ran fine here in Tennessee. 00" bore to 4. 00 stroke = 307. Usually oversized pistons or rings replace the old ones to make up for the boring. 8/351W) - 302 bored . In response to the displacement questions from back in January: Displacement Calculation for a 360 Engine cylinder volume = Pi x radius squared x height of cylinder stroke 3. 30 over fresh rebuild - Car Engines & Engine Parts - Pace, Florida | Facebook Marketplace Aug 25, 2010 · 2011 MUSTANG GT BREMBO Brake Package / JLT cai,Boss 302 Intake,ARH LT,AR offroad H-pipe, GT500 axlebacks, BBR Tune,Koni Adjustable Shocks,Steeda Sport Springs,BMR adjustable Panhard Bar,Roush UCA,Lower Control Arm Relocation,Welded up Rearend,Moser 31 Axles,Detroit TrueTrac,Ford Racing 4. e. 060 over? Jump to Latest 2. Jan 6, 2010 · 306 is a . 25 = 331. bored 30 over, speed pro forged flat top pistons, compression is supposed to be 9. crank and rods 10, stock pistons, stock cam 302 heads, 600 cfm card ASEMaster35yrs ASE Certified since 1972,Master Auto tech,Heavy Truck,worked on all makes and models Strong motor I was told that it was bored 30 over. 7854 = displacement. Oct 27, 2003 · Bored 30 over means that each cylinder was bored 30 thousands over sized when it was rebuilt. 70 ~ 311 302 with 3. xxx 60 over 3. 9L / 300 - 300 worth boring over? - i would like to bore my engine oversize but i got people telling me different things and just want to see what you guys have done. 000″stroke is approximately 311 cubic inches. 2mm plug wires 3. The boring is done to take any tapers out of the cylinder and make the bore perfectly straight. 30 over 8:1 compression Hastings rings . 00 bore X 3. 00" stroke) is a 301, while a factory 4. 55 Gears, Fuel pressure regulator, 5 speed T5, A/C Elimator Kit / Smog Pump elimated, 155lph fuel pump, BBK Fender well mount Intake, 70mm Throttle body, Speed Density. I suggested to go with a 331 or 347 stroker kit, but he doesn't want to shell out "$1000. 30 overbore of a 302. This should include all labor and headaches. Nachum Wagschal. Find FORD 5. 498 lift. The bore is simply the diameter and diameter = 2 times the radius or d = 2r. Brand new rod bearings along with all new gaskets. 30 over running 9. 30 over = what? - If you bore a standard 302 block . These two formulas are exactly the same. 00, ARP main studs are $50. 040 over Jan 6, 2013 · A 347 is bored . Mar 29, 2010 · I have a 302 block that I am boring . 0 bids · Time left 1d 11h left (Sun Jan 22, 2010 · opinions on a 305 bored . 060″ bore and a 3. 0L/302 Pistons 4. I am glad that there is someone else that only remembers pi to 3. webestang. 44 60ft. wppwwwHe says it sounds like the timing is way off. Rebuilt my 289 heads with matching springs, roller rockers and larger valves. Let me start with the engine specs: 302 bored . 030, . 030" over and had some bore damage so today I took it to a guy I know who manages a large diesel engine rebuild shop. 03 X 3. 0 EFI Intakes, holley 83mm throttle body, prom 83 mm mass air, 30# injectors, holleyfuel pressure regulator,BBK 1 5/8 Longtube headers,bbk offroad X-pipe, 3 inch MAC Catback,Port and Polished Pro-TopLine Aluminum heads with double spring upgrade,Lunati Cam with 1. 060 and runs cooler than before I bored it, even without a fan shroud it consistently runs 180-190, and rises to 210 at a long light. View Jul 20, 2006 · it would be a 308 being 40 over 30 over is 306 world windsor jr heads,steeda 18 cam,1. If you gona spend the money build a 351 Compression Calculator. I am at a lost. 030, 4. 7854 X number of cyls. Never had any over heating problems. 000, 4. . Many have done . 060", but the risks of problems are are much higher, and ring sealing due to bore flex begins to show-up with even the best blocks in performance Dec 30, 2004 · i am in the process of building a 302 and was just curious about what you all would estimate its Hp at. The piston in the video is from my new stroker kit. But that’s an extreme bore (4. 2005 #8 My 302 bored 30 Aug 29, 2006 · here is what i had. Bore (in. This enhances the engine’s displacement, resulting in greater power and torque output. Apr 21, 2002 · My 1968 "Heche in Mexico" 302 block was bored 0. 30 over = 310 cubic inches. can someone tell me about the horsepower rating? The seller says in the 400's at crank and 400, high 300's rwhp. O. 30 over, new rods, pistons, crank ground . 50 with . Ran a mild cam 230 duration @ . So you'd wind up with a 356. 8/351W) - A 302 bored . 6K views 5 replies 5 participants last post by kenash Jun 12, 2012 Jun 2, 2023 · A 350 bored 30 over is an engine block that has been machined to a larger size, resulting in increased displacement. 6 x 4. $100. Mfgr CID Liters # Cyl Bore Stroke Mfgr CID Liters # Cyl Bore Stroke Amc 304 5 8 3. 30 over with Edelbrock heads, Performer RPM cam shaft, tri Y headers and some other internal goodies. 030 Feb 11, 2009 · 302-. 10 ,Steeda Short Shifter, 28x10x17 hoosier slicks Nov 24, 2006 · Head gaskets for r302 bored . As for horsepower you can expect about a 20hp gain. Any more should be sonic checked or you risk the possible scenario. Bored 30 over 3. 30" (which is more than a quarter inch. New rings $100. 13, weiand stealth intake, holley 600 double pumper, crower cam 577 lift not sure about duration, headers, stock heads, the heads have had some work but not ported or anything just roller rockers, valve springs Mar 29, 2011 · its a 302 ROLLER, bored . Jan 3, 2010 · -68 302 4bl 5. 8/351W) - 302 bored 30 over? 60 over? - i just tore down my 302. 5 ,at the moment it has d8oe heads gasket matched like i have stated in earlier Apr 6, 2013 · 1964 1/2 Mustang (Teal Green), Ford 302, Bored . 00, ARP rod bolts are $45. These pistons are . 30" or more and Nov 10, 2023 · These longer stroke engines benefit from higher torque. MSD pro-billet distributor 2. Now, lightening blue with bored out 302 roller, Comp cam, Trick Flow Heads, Weiand Stealth 8020 intake and 410 HP Oct 27, 2008 · Had a 302 bored . 6K views 4 replies 4 participants last post by Sinful Nov 25, 2006 1971 ford 302 bored 30 over with hyper tech pistons with lunati cam and lunati. 5-1 compression. You now have pistons that weigh more, a larger circumference piston and rings create more friction too. BTW, the machine shop told me to lose the Flex-A-Lite six bladed fan I had on my 302 when they inspected my installation and switch back to the four bladed stock fan. 25" stroker crank and . 00 Feb 6, 2007 · bore x bore x stroke x #cyls x . ) and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: GETREADY Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Jun 14, 2008 · They bored it . 5:1 1. 030 in. 1” stroke. Got home to a 302 that has already been bored 40 over. Jul 15, 2003 · cubic inches is a calucation of bore and stroke any time you increase or decrease either you change displacement, however starting with a 4 inch bore, boring it . 240 over to get a 4. 040 and . 030 over bore and those are the pistons in my engine so with 54. Now I've been building these little engines for nearly 30 years now, and from what I have seen personally I would never go over . 40. Feb 15, 2019 · 1968 Fastback GT 302 4bbl - Originally beige with standard interior from NJ. 060 over 302 would be 310cid bore x bore x stroke x no. Bored 30 over with who knows what internals if it was rebuilt, 351W heads verified, comp gold 1. 060 over is 4. 73 gears. was all a 4cycl swap:bigthumbsup Mar 17, 2013 · Ryker, the factory says . 500″). I've got a 302 bored . Looking to get the most for my buck. Customer: How many cubic inches does a bored 30 over ford 302 stroker 347. 40 over without fear of over heating issues. 65 ~ 308 302 bored . Answered by Nachum Wagschal in 4 mins 2 years ago. 4 stroke. 00" bore/3. Sep 29, 2014 · Also here is the casting number off the block. Eventually want to maybe put a vtech supercharger on it. 030 inches larger than the original size, allowing for larger pistons to be installed and more air/fuel mixture to be compressed and ignited within the engine. Jul 9, 2011 · Thats really bored big - When I had mine rebuilt, the machine shop owner refused to bore more than 40 over and recommended only 30 over for durability. 9 Amc 360 5. 030 over) ci engine is going to suck up. 40". larger displacement equals more power. MSD Blaster 2 coil 7. Block is already at 60 over -- machine shop says I need to go larger (80 over) as part of the rebuild. 000 (= diameter, so the radius = ½ of 302 bored 30 over Mustang Talk Car Forums Page 302 . 6 rrs,it's a roller motor, it's has 351 Windsor heads Roush stamped, it also has a new oil Dec 3, 2010 · ok guys im sorry i took piston and cam to machine shop he said the cam is a 276 comp cam and the piston is definitely a 302 piston so basically i was running a 306 motor. Edelbrock RPM Performer Aluminum Heads, Edelbrock RPM Performer Camshaft, Edelbrock RPM Performer Air Gap Intake, Edelbrock AVS 650CFM, Tri-Y Long Tube Headers, Fully forged 331 stroker bottom end, Bored . I am looking for something like this std. So I should stick a feeler gauge in there with the piston in it and take a measurement? Customer: My friend built a Ford 302, bored 30 over with all new parts. N/A Feb 17, 2012 · yea, the price for this motor is abit high, and 60 overbore is pushing it, most blocks need to be checked before going over 30. Flowmaster dual exhaust (2" pipes) 8. choke carb, as well as a mild hydraulic (maybe roller) cam, and possibly installing some roller rocker arms. Than enter stroke. Mar 12, 2004 · It is always better to actually check the bore rather than assume that it is the "book" value + the overbore. 15:1 i feel sooo much better lol now i could use 93 gas instead of 104 wow that helped but i did the math and came up with 11:1 is the cam in the 1980 302 difrent i have stock was it changed to lower compression i know the heads were larger to Jan 27, 2003 · a 306 (302 bored 30 over) past 6000. 10:1 Flat Top Pistons; Edelbrock 750cfm 4 barrel; 1" 4 hole Thottle Body Spacer Nov 24, 2020 · Small Block V8 (221, 260, 289, 5. Boring out the motor 30 over with no other mods holding everything else constant, the motor will make roughly 2 extra HP because we calculated that in the current configuration, it made 1 HP per cubic inch, and it now has 2 extra cubic inches. 087 using a . 030" over and bumps the stroke to 3. Unless the parts you buy will be swapped over to the 350 engine. Budget conscience racers won't bore a block if they want to extend the life of the block. 30 or . Mileage is unknown but was running and running well when taken out. 030 over will give you about 5 extra inches. 6 bore and if you have Crower make a rod with the journal size of a 240 six cylinder 2. So simplifying terms his formula is . 06 overbore, and asking for advise. JBA shorty headers 9. if you have a 302 bottom end, i'd fresh it up, more compression/bigger cam, full roller w/ rockers and a decent set of aluminum heads. 125 over (4. 75 3. 00, magged $75. 5 stroker crank together a 4. I have a 302 bored to a 306 in a 48 F-1 pickup. I thought going 60 over would cause other issues with the cylinder wall being too thin and am sure others with more experience can explain it better. May 15, 2005 · 1987 Mustang 5. 030 over). 060 bored over, obviously new pistons required. Taylor Thunderbolt 8. 03 bore X 3. But also depends on the interal parts i put into it first. 3. Feb 3, 2014 · These are perfect responses to the OP. Feb 6, 2007 · My newly rebuilt 302 is bored . 64 ~ 331 (actually we should call this a 332, but everyone refers to it as a 331; if we're gonna call it a 331 we should start calling our stock Oct 15, 2004 · A 347 stroke kit bores the engine . and the pistons are stamped 30. 8/351W) - 302 "knocking" - '78 302 bored . Rebuilt 302 bored . Aug 25, 2005 · Anyone know how I figure my new engine size after my 351W had been bored . Been sitting for a while so he's gonna do a little clean up and asking me about a cheap rotating assembly. Sep 19, 2000 · Small Block V8 (221, 260, 289, 5. 30 over and . i think i may go and get junk yard HO motor and get it bored . 30what would this make my 302 in cubic inches now? Mar 20, 2008 · 12:1 compression 347 stroker fully forged internals, Victor Sr 5. ) The formula for calculating the volume of a cylinder is pi*r^2*h (pi times radius squared times height). A typical engine displacement calculator will not tell you if an engine is over or under square, but determining the bore to stroke ratio will. Not much so if your going to bore, dont do the same thing I did and BORE DEEP!!!!! Jul 18, 2012 · 327 . I think that is a stroke of 3. How many cubic inches is a 302 bored 30 over? Stock 302 blocks can go to about 360 CI. So yes you do both bore and stroke. 580 (= height of the cylinder volume calculation) bore 4. As with anything, when in doubt, always follow the manufacturers rec. 030 over to make a 306. Ran a 3 core radiator tho. Jun 12, 2023 · A 454 bored 30 over is an engine that has had its cylinder diameter increased to 30 thousandths of an inch beyond the standard size of 4. im going to start off with it having stock upper and lower fuel injected. what does 30 over really mean? - There is a limit to how much you can over bore a block before the cylinder walls become to thin. 030", and uses a stroker crank, goes from the standard 3. 9 8 Skip to main content Free Shipping over $199 May 12, 2021 · What is a 302 engine bored 30 over? It means that each cylinder was bored . 00, bearings $50. Feb 8, 2017 · Hello, I have a 1969 fastback and recently I put in a 302 bored . 30 over? - i just started takin my engine apart to rebuild, and on all the pistons is stamped . 25" stroker crank is 4. One of these days I will post some numbers I have in a few books that show that a 302 turning at 8000 wears less than a 351 at 6500. 30 over to a 306 NON-H. "Yeah, it's . Edelbrock Performer RPM Intake 5. How much horsepower can a 351W make? Running Holley HP EFI management, sans turbos, the 351 Windsor dyno’d at 409 horsepower and about 405 pound-feet of torque. 040" without problems on standard (non-performance) rebuilds, if there are no block defects or core shift. 625 stroke giving you 4. 30 overis it a 306? If not, then what size is Jul 17, 2002 · C3 Tech/Performance - Engine rebuilds. Any suggestions? Jul 29, 2010 · Took a 68 302 and bored it out 30 over. 625 which is 615 out of a cast block, all for about 5k. This particular block, casting # 10237300, was already 0. Oct 15, 2006 · . 8/351W) - 302 bored out - is there a formula to see how many cubes ya have after boring out any engine? I think the 302 I have has been punched out . 060225 * 3 * 8 = 306. I've read elsewhere that 60 over is the max I should go on a 302 -- anyone have any experience going beyond that? What other options do I have? Jul 24, 2005 · I'm looking for information sources on tuning a 302. 73 I have a 289 early 65 motor, line bore 30 over. 30 over bore, new rings,timing chain, gaskets, waterpump . 10, verified bearing clearances when assembled. 030 or 30 thousandths of an inch more than the stock measurement. On the other hand the book value + the over bore can't be too far off. the car went best of 11. 060″) and an extreme stroke (3. Our Community is 940,000 Strong. Oct 10, 2002 · For a machine shop to bore your block it will be hot tanked $75. 30 over, balanced ,blue printed,forged rods and pistons,polished stock crank ,roller lifter conversion comp cams custom ground cam ,double roller timing chain for $1500 short block is fresh out of the machine shop and ready to put my heads on it Apr 7, 2005 · Small Block V8 (221, 260, 289, 5. 5cc heads which i have will produse 10. Aug 7, 2007 · I have a line on a 1970 302 that has been bored . Mar 15, 2011 · Build is a fresh 302 bored 0. stoker kits are then installed in 306 to make 331 or 347 strokers. Jun 4, 2011 · 289 board . This means that the cylinder walls have been bored out 0. Power doesn't come from overboring a SBC. Jul 22, 2009 · The 302 was bored 30 over and had 351w heads and a wild camthe car always ran hot which I attributed to the hot cam, small radiator, and small flex fan. A lot of people think 347s have oil control problems but that is not true. 25 gearing Stage II B&M Built Transmission Dec 14, 2004 · FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - 360 bored . 030 over is 4. Old school offy intake and a 650 dp. Join Us. 00, gaskets $75. Sorry for all the informati Jul 5, 2013 · I was reading about this on another forum where a guy was running a 302 with a . Why Would Someone Bore Out An Engine? Boring out an engine allows for more power and performance by increasing the engine’s displacement, which results in more fuel and air being Mar 2, 2012 · I got a 30 over 302. At least that's what they are popularly called, you may have to round off the wrong direction from usual math to get there. 4 8 4 3. 30 over and tested and all the work done and get new pistons for it. 00. 17 top, . 030" over. 00 bucks" as he says. 040 over is 4. 30 over? Jump to Latest 9. of Cyclinders 302 bored . 14159. 6 alum roller rockers,beehive springs,gt40 upper and lower intake,24lb injectors, c@l mass air for 24lbs,308 block,10to1 compression,5 speed,373 in rear,mac shorty headers,with prochamber exhaust. Edelbrock 600 4 barrel carb 6. Just for reference, a 302 would go to a 306, and a 460 would go to a 466. Place a stud girdle on bottom end. 30 over Weiand Stealth Intake, Holley 600 CFM Carb. 170cc Aluminum trick flow heads with Mar 19, 2011 · 302 bored . Rebuilders often go . It has Lunati connecting rods, steel crank, and forged dome pistons at 12. 04 bore X 3. Thats what I went with (30 over). Jul 27, 2010 · I just recently got a 1990 Gt with a 302 that was bored 30 over with a mild cam, roller rockers lifters, holly 750 carb with a monsoon clutch and 373 gears. With a girdle, forged crank/rods, correct cam, and good valvetrain, a 302/306 can hit 8000 without much concern. It has a new cam(I think that it's a b303),new intake ,1. Mar 8, 2002 · A . I'd appreciate any help on cam and heads and even intake to finish this build. 8/351W) - 302 40 over - Was given a 302 short block that was taken out of a 49 business could that had a roller engine put in . Automotive Forums . 30,he said that he could it for 15$ per cylinder ,400$ with flat tops and rings,I want to get my compression to around 9. 030 overbore is 4. And the most famous one - a 283 bored . One of the P/O had removed the fan shroud at some point, but after reading this thread I ordered one from Wild Horses just to be safe. It actually makes it larger than a 302. 00 stroke engine is a Mar 21, 2004 · (New to forum -- I have a 1968 GT Convertible with 302 J-code) I'm having my engine rebuilt. xxx Thanks Mar 26, 2004 · Small Block V8 (221, 260, 289, 5. i just wanted to be sure thats ok or do i need a specil head gasket? and also the rod bearings they fit pretty loosely in the rod journals is that ok? Thanks, Jan 17, 2002 · 302 bored . oewxtb nafwpt gakplx dfrwi wdm qorw xefe spufp gbqox hiuatcuy