30 posts · ... A 402 is a 396 bored out .030" over and typically low compression unless it's an early 70's motor like the L-34 or L-78. Ron ... Ive never been able to figure out why so many guys swoon and get chills over a 383-396 sbc built from a 350 combo and ignore a 396-402 bbc combo with its larger ports, bigger valves stronger parts and ...1948 Plymouth Street Rod for sale located in Hobart, Indiana - $38,000 (ClassicCars.com ID CC-1660220). Browse photos, see all vehicle details and contact the seller.454 block bored 30 over. 3.76 forged crank. closed chamber heads 109cc 2.25 intake 1.88 ex valves. eagle H beam rods 6.385 long. comp cam,Duration 294/294, Lift .595/.595. holley 850. i ran this same setup in a 408 ci bbc only with stock rods and 10.5 to 1 pistons. any help with piston choices will be very helpfull. Thanks.The base bore of the 427 engine is 4.2328" to assure the competition engine never exceeded 427.15 CID (6.999788 liters), once worst-case tolerances were factored in. There are 12 bore grades for 427 engines through 1968 with each grade .0003" larger than the neighbor, 8 bore grades from 1969-on with .0004" per grade step.I was about to explode. I called the engine guy and he said the piston to bore clearance was to loose at 0.005 and it should be 0.002 and that it needs all new pistons and bored. ... My question is 0.005 to loose for the 396 with TRW cast replacement pistons? The machine shop that did my work is a very reputable place and I have had 10 other ...the only BBC 396 block that could be bored to 4.250+ was the 65 corvette 396 block because it was cast to be a 4.250 bore block before GM higher ups said nothing over 400 cu in. Top. ... As for another engine, I would hunt up a 502 block, bore it .060" over and install a 4.375" stroked crank and make a 564" engine. Say at 9.5 to 1 CR, and cam ...Looks like if I bored the 396 .030 over to net a bore of 4.125 and then used the 4.00 inch crank you would net 427ci's. ... (1.655" x 30 cc domes) for the combo.There is a guy on here that built a 402 based motor with a 4.25 crank. Wanna say it was either 4.155 or 4.185 bore. Had pistons custom made with the higher pin location to use a 6.385 rod. KB has an off the shelf piston to fit a 4" crank in a 396/402 block using stock 6.135 rods. At 4.155 bore nets a 434", at 4.185 bore nets a 440".i have for sale my 1967 super sport chevelle it is marina blue with black bucket seats , it has a 396 bored 30 over and a muncie m20 four speed. i bought this car from a friend of mine in 1987 he had owned this car about 5 years , all the other owners where people i knew so car pretty much came in this area when new and was just sold or traded ...The combination to get a 383 is to bore the block 30 over (to 4.030 inches) and use a 3.75-inch stroker crank. The stroke increase over stock is .27-inch. Crowding this into a 350 block normally ...IF you bore the block . What is a 350 bored over? a 350 bored . 030 over has a bore of 4.030. What is a Chevy 396 bored .30 over? If I'm not mistaken, a 396 that's bored . 030 over is 402 cubic inches.It has a 1968 BB 396 bored 30 over. I am running a Q-jet which works fine. I redid the engine bay a few years ago in anticipation of installing AC I bought all the right tid-bits including a radiator that was suppose to be for an air car. Clutch fan (its good) Like I said The car was originally an air car so I decided to install Vintage Air ...360 bored .30 over. What would my 360 which was bored .30 over equate to? Reply Like #2 12-14-2004, 04:29 PM gtex. Lead Driver. Join Date: Apr 2001. Location: Texas. Posts: 6,174 Likes: 10 Received 20 Likes on 15 Posts I get 366 CI using 3.5" as the stroke. The stroke may be slightly different...but not much. ...The 396 and 402 are the same block, so yes they will fit. Just make sure that the pistons work with the heads. The piston dome and the chamber need to be compatable. Mike. 70 chevelle. 420 sb combo - [email protected]. 405 sb combo - 11.87 @112.5. 307 combo - [email protected]. 68 chevelle 533 almost there.The base bore of the 427 engine is 4.2328" to assure the competition engine never exceeded 427.15 CID (6.999788 liters), once worst-case tolerances were factored in. There are 12 bore grades for 427 engines through 1968 with each grade .0003" larger than the neighbor, 8 bore grades from 1969-on with .0004" per grade step.I was wondering what a 1978 Chevy K10 SBC 400 that is .030 over would be in cubic inches i have one im building for my 78 Chevy k10 4x4 and i was wondering so i could get lettering to put on the fenders so someone knows what they were beat by in a pulling contest:yes: Theres nothin like NOS GM parts:yes: 1968 Chevelle 300 Deluxe L …Possible Reasons: Please make sure that the Article URL is not incomplete. This article might have been removed from the knowledge base. The article title might have changed causing the previous search-friendly article URL to break.Dec 17, 2007 · A factory 396 came with a 4.094 bore and 3.76 stroke. 402 was just a .031 overbored 396 from the factory to increase the displacement to 402 sharing the same stroke as the 396 @ 3.76 stroke. Even if you were to over bore a 396 +.125 the resulting bore would only be 4.219. Short of the 4.250 bore required with a 3.76 stoke to make the 427 ...VORTECPRO. 6449 posts · Joined 2007. #5 · Mar 26, 2014. The casting number on your block will determine which head gasket you will use, and the modifications made to your block. Normally I use a 1037 on a NA 4.310 bore, but with nitrous a 1017 might have an advantage seeing the fire ring will be out of the heat a little.The Std bore on a 396 is 4.094" and the Std bore on the 402 is 4.125" or +.031". The common lazy statement that a 402 is a .030 over 396 is used often but not true. A 402 is a 396 +.031". Since the volume of 396 engines far exceeds the volume of 402 engines, the cost of the 396 parts is often lower. So as a result, when I rebuild a 402, I tell ...1967 SS 396, M20. When your finally out here in San Jose you might want to join the NOR-CAL camaro club. Its a good way to meet a bunch of camaro owners from the bay area. 70 Camaro, 355, th350, 4.10 posi. 74 Trans Am, 400, th400, 2.73 posi. I ran the p*ss out of a 60 over 396 2bolt in my Super Street car.Pkge includes the pistons, Scat I-beam rods, CL-77 brgs (any size), and Mahle 1/16", 1/16" 3/16" rings. The ONLY single issue I have is with the sizing on the pistons, we chose to stock them in one size only, for a 4.145" finished bore. This allows us to use them on the 4.095" (396") bore and the OEM 4.125" bore (1970/402").40 over 396 Jump to Latest Follow 9K views 2 replies 3 participants last post by Gene McGill Oct 20, 2003Entry for bore and stroke is in inches. The default for the number of cylinders is 8 but that is also open for change. Displacement is given in cubic inches, liters and CCs. Most Chevy V8s, Chrysler V8s and some Ford, Buick, Olds and Pontiac V8s are in the database as of this time; not all are covered but the most popular are in place. There ...Mar 5, 2014 · Never-the-less, given the stock 396 bore of 4.094" i would recomend no more than a "30 over" 402 piston. This will give you a 4.156" bore, combined with a 4.00" crank from a 454, will give you a displacement of 434.1 ci.The COVID-19 pandemic is pushing many people indoors this winter, but that doesn’t mean you can’t have a good time. If you’ve been looking to pick up a new hobby, there are so many...That's because this 396 cubic-inch motor has been rebuilt about a year ago for pure performance. This includes a bored .30 over, Quick Fuel four-barrel carburetor, Edelbrock intake, and headers that feed a new rumbling dual exhaust. This enhanced V8 has traveled only about 200 miles since built, and that's not the only investment in great ...1969 Chevrolet Chevelle SS 396 Additional Info: 1969 Chevrolet Chevelle SS 396. 8 Cylinders Gasoline Engine. Automatic Transmission. RWD.396 bored 30 over, Carter carb, steel crank, forged pistons, roller rockers, mild cam, headers, custom value covers, weld wheels, 2 link suspension set up, coil over springs, posi rear end, 350 rear gears, Champagne Gold, Vinyl, AM/FM Radio, etc.**The bore on a 396 is 4.096 , the bore on a 402 is 4.125. A 402 is a 396 bored .030 over. ... I thought the .30 overbore to a 396 helped to unshroud the valves and ...Hey whats up guys and girls..... I am just curious as to how probable is it to get 500hp to the wheels from a BBC 396. As far as I know, it has only been bored once .30 over. If you can cover both NA and Supercharged options, I would appreciate it. I have done a ton of research on this, and can't find too much info. Everything I read is based off of the 454. I would like to stay with a BBC ...455 bored 30 over is now 461ci. How many cubic inches is a 400 small block bored .030 over? 406 cubic inches . ... How many cubic inches is a 396 bored out 30 over? 402.The 427`s have a 4.250 bore. You would have to bore or power hone nearly another buck fifty. Either way, odd sizes, .010, .020, and .040 over are hard to find parts in both rings and pistons. .030 over on either engine would be a better choice whether it`s a 396 or a 427 as they are readily available. Reply Like.Im running a 396 with the following: Bored 30 over/Line bored TRW Forged Pistons 11.1 Stage 4 Rods Steel Crank 10/10 Chrome Moly Rings 2 bolt main, ARP Studded Isky Z-89 cam (630 lift, solid cam) Roller Rockers Fully pocket ported and polished square port heads Manly valves severe duty True Double roller chain adjustable Cam buttonThe engine is rebuilt Chevy 396 bored .30 over with a March Serpentine system complete with AC. The exhaust system has long tube headers and a throaty 3" Magnaflow set up that loud enough to let them know you are coming, but far from overbearing. The cooling system consists of a BeCool Radiator with dual electric fans and has no problem keeping ...The 396 bore was 4.096 inches, plus .060 inches would be 4.156 inches diameter. Radius would be 2.078 inches (one half the diameter). Radius squared would be 4.318 inches (radius times radius). Times pi (3.14159), that's 13.56 square inches. Times the stroke (3.76 inches) that's 51 cubic inches. Times 8 cylinders, that's 408.05 cubic inches.The common ones are .030, .040 and .060 bored over, obviously new pistons required. When a block has been bored .030 over it usually means it's been rebuilt once, but not always. It also adds cubic inches to the displacement, a 350 bored .030 over is 355 CI. Scott [Modified by Scott78, 10:43 AM 7/17/2002]This Cranberry Red over Red 1970 Chevelle was built in the 3rd week of May, 1970 at the Arlington GM plant. The Chevrolet was purchased by the original owner at the Parrish Chevrolet Dealership in Troup Texas on 10/02/1970. ... Lots of upgrades. Immaculate condition. 396 Bored 30 over. Tube Front Suspension. Coilovers, 5-speed transmission ...Can you install a 4.00 inch crank into a 396 block and make a 427 out of it? Looks like if I bored the 396 .030 over to net a bore of 4.125 and then used the 4.00 …It has a 1968 BB 396 bored 30 over. I am running a Q-jet which works fine. I redid the engine bay a few years ago in anticipation of installing AC I bought all the right tid-bits including a radiator that was suppose to be for an air car. Clutch fan (its good) Like I said The car was originally an air car so I decided to install Vintage Air ...Jan 4, 2010 · 396 bored .30 over -17 cc hollow dome pistons, stock rods and crank. cam is a lunati 60203 .542 .554 lift 110 lsa 1.7 roller tip rockers. weiand action plus intake.112 cc 454 big oval heads with 2.19/1.88 i know there open chamber heads but the pistons are for open chamber heads. 750 dp holley. so how power do you guys think its pushin? and any ...Hey guys I have a chance to buy a 445 stamped Block that is already bored 30 over. ... Mine is also a 445 block that is now 0.070 over,although it has been torque plate honed,align honed,the block has been decked and it has a partial fill to just under the frost plugs. ... 1970 SS 396 restoration project in progress. Bought 5/2018. Reactions ...Eagle Kit #'s 12822,12823,12833,12906,12922,12910,12926,12826,12827,12837,12917,12930 Forged 4340 Crankshaft Forged 4340 H-Beam Rods 4.000 Stroke 6.125 Rod Length Balancing Options Available 2Let's make sure we are on the same page. you had a 383 (4.030" bore X 3.75" stroke), you now have a 4.060" bore X 3.75" stroke, correct? If so then it is a 388. If you had a stock 4.00" bore and 3.75" stroke it would be a 377. What you did is bore the 383 .030" over not .060" over.Sep 21, 2006 · Also, as mentioned several times above, a .060 over 396 will be 408, whereas a .060 over 402 will be 414. It is EXTREMELY UNLIKELY that you could ever notice the difference between an equally built 408 vs 414. Also, it is VERY PROBABLE that any 396 will go to .090 over safely. Thus, you could use .060 over 402 pistons in a .090 over 396.From 4.8 to 7.0L, see a complete comparison chart of the bore & stroke of all the engines in the Gen. 3 & Gen. 4 LS engine family. ... I only want to go .020 over bore so I can stroke it to 363. Reply. Þorsteinn Vignisson says: April 29, 2024 at 12:21 pm. hello one qestion can I use crank from 5,3 5,7 6 in 6,2. Reply. Barry Nix says:I'd also like to be able to provide more information on is the maximum bore size that can be reliably used on various big blocks. I've heard of people going as much as .125" over stock on some early 396 blocks, although you'd certainly want to check the wall thickness of the block with a sonic thickness tester before taking one out that far.D. Double_v23. 1522 posts · Joined 2007. #5 · Oct 24, 2008. The most important thing is to make sure the gasket bore is larger than the engine bore. A 4.060 gasket is used for anything up to a +.040 bore on a 350. The 4.165 you specified is for use on 400's with a bore of up to 4.155. (which is a .030 over 400)M. Maverick. 1718 posts · Joined 2006. #2 · Nov 30, 2006. 460 cubic inches is the DISPLACEMENT (size) of the engine. The BORE is the diameter of the cylinders. Standard bore for a 460 is 4.360 inches. If it's .030" over, its 4.390. .060 over is 4.420 .080 over is 4.440. Simple math.Short bed 2wd 396 Bored 30 over (Built by state renowned professional engine builder) 400 turbo hydramatic disc drum brakes a/c ps pb 12 bolt rear end Best of the best used in this restoration. It is... $48,000 1972 Chevrolet Cheyenne. SOLD. CCA-82207. This beautiful '72 Chevy pickup has 350 engine, cap on rear bed consisting of chag carpet ...Ok, just put the engine in my car, it's going in my '69 El Camino with a Muncie M-20 4speed and 3.90 gears. Here it is... -396 Big Block Chevy bored .030, makes 402ci. -Small domed pistons, 17cc. -Edelbrock Air Gap RPM intake manifold, port matched. -750cfm Holley carburator. -Doug Thorley headers, 1.75" primaries with 3" collector. Open Exhaust.Jim Mac Discussion starter. 12618 posts · Joined 2004. #1 · Oct 30, 2005. I got to talking to a guy tonight, said he may be interested in my 396 short block because the case is a 69 model. he wants to build a 427 and he told me most 69 cases will go out to 4.25 bore.I am wondering what the displacement would be on a 348 block bored 30 over with a 3.75" and a 4" stroker crank. ... Bore x Bore x Stroke x .7854 x number of cylinders. ... For a 350 Chevy, it's 4.00 x 4.00 x 3.48 x .7854 x 8 cylinders =349.85 cu. in. If a 396/427 crank with turned down mains is used for a stroker build, the actual stroke is 3. ...454C10. 4018 posts · Joined 2004. #10 · Mar 26, 2007. You can easily go 0.060 over on a 402 block. Makes a 413. At 0.090 over I would start to worry (418 cid). If you have a 4 inch stroke crank (454), I would consider using that. Would make 440 cid with a 4.185 bore and 4 inch stroke.Bay Area, California. Going 0.040" over gives you 47 cc more displacement. That's nothing to brag about. To put it in perspective, if the added dispacement were equal to added HP then it would give a 200 HP engine an extra 5 HP. If the engine made 300 HP before being bored over, then the extra 47cc would add 7 HP.Converting CID to Liters and Liters to CID. To convert cubic inches to liters, divide the cubic inches by 61. While, "61.0237441" is the exact number to divide by but in most cases it will not affect the conversion enough to change the rounded size. For example, a 350 cubic inch engine to liters is 350/61 = 5.737, rounded down to 5.7 liters.-1970 c-10 396 that was a factory 402 bored .030 over-very cheap pistons .055 down the hole,.040 head gasket with a 118 cc chambered head,compression was a very wimpy 7.7 to 1-heads oval port straight off the used motor cleaned up with a 3-angle valve job,2.06/1.72 stock valves.no porting was done at allI dont know much about the motor its a 396 bored 30 over to a 402.it has cast oval port heads a solid cam with a little lump to it but not much. I had a tunnel ram with a demon 750 on it and the motor would spin about 5700 rpm. Im sure the compression is around 9.5 to 10.1.Most 396/402 can not be safely bored out to 427 bore size... Mostly the early blocks (65-66) are used for the 4.25" overbore... But sonic testing is a good idea anyway. For the price, I'd consider looking for a 454 block. If your not in a hurry, you should be able to find block and heads (needing rebuild) for that $500...Ok, just put the engine in my car, it's going in my '69 El Camino with a Muncie M-20 4speed and 3.90 gears. Here it is... -396 Big Block Chevy bored .030, makes 402ci. -Small domed pistons, 17cc. -Edelbrock Air Gap RPM intake manifold, port matched. -750cfm Holley carburator. -Doug Thorley headers, 1.75" primaries with 3" collector. Open Exhaust.Much better to sell that 396 block and build a 454 plus motor unless the block is correct for your car. Even the 454 block with 2 bolt mains are fine and strong (but I would use studs rather than bolts). ... I'm at .030" over @ 4.280" Bore, 460ci, 10.25:1 MK IV and pleased with the dependability with a 6700 to 7000rpm 600+Hp SR on Pump Gas. It ...Enter either Inch or Metric values, then click. Enter the Bore Diameter (inch) Enter the Stroke Length (inch) Enter the Number of cylinders. Enter the Bore Diameter (mm) Enter the Stroke Length (mm) Enter the Number of cylinders. The values entered result in a displacement of cubic inches and liters. Standard 1964 to 1972 Chevelle Engines:D. Double_v23. 1522 posts · Joined 2007. #5 · Oct 24, 2008. The most important thing is to make sure the gasket bore is larger than the engine bore. A 4.060 gasket is used for anything up to a +.040 bore on a 350. The 4.165 you specified is for use on 400's with a bore of up to 4.155. (which is a .030 over 400)396 blocks were 4.094 bore,402 blocks 4.125.So it musty have been bored .030 if block number is for 396. Checkered Flag Machine & Ceralli Competition Engines Racing engines and induction developmentmotor 396 bored 30 over, 9.5 to 1 compression cast pistons. comp. cams extreme energy 268 hydraulic cam and kit (push rods, springs, lifters timing chain) stock iron 702 heads, stock rocker and guide plates. heads were redone on rebuild. oil is valvoline racing 20/50 with high zinc. temp. this morning was 80 to 85 degrees.All new SS Rims and White lettered Tires. Automatic Transmission shift kit. Original Malibu # matching engine bored 30 over . 1968 Chevrolet Chevelle SS Trimed . 23,900 Fort Myers, FL Fort Myers, FL at classiccars.com. 1970 CHEVROLET CHEVELLE SS. 1. 50,000 ; 39,633 ... .040" over 396, aluminum heads, ceramic headers, performer intake, 10.5-1 ...The 396 became the 402 in August of 1969. The .030" over 396 was denoted by the prefix "C". For instance, a "C JF" block like the born with motor in my L34 SS396 is a 350hp/402ci. ... This engine had a bore of 4.124 inches and a stroke of 3.76 inches; to compare, the 396 had a bore of 3.094 inches. The L34 had a compression ratio of 10.25-to ...The 434 Build actually is a pretty simple build, the Pistons for the 396 build getting my 10.5-1 desired CR is proving to be a task. I am build the 434 for a cousin,,,,, Useing a 396, bored .060 over with a stock 454 crankshaft, stock rods and a set of Keith Black KB-361 pistons. = 434 cubic inches.So, a stock 250hp 350 would make 253.5 hp with a +0.030 bore. Better than losing 3.5 hp but not a noticeable gain. And if the bore is done poorly you could lose hp. bigger bore is better, but the power is in the heads. Concentration on getting better heads first.I have a 318 bored .30 over with 12to1 pistons, webcam roller cam (not sure lift or duration), port and polished heads (may have bigger valves not sure), four barrel stock manifold with stock 750cfm quadrajet, 1 3/4" headman headers with 3" collectors and 3x24" glasspacks with 3" turn down.You would have to bore or power hone nearly another buck fifty. Either way, odd sizes, .010, .020, and .040 over are hard to find parts in both rings and pistons. .030 over on either engine would be a better choice whether it`s a 396 or a 427 as they are readily available. Reply Like. 08-18-2004, 01:23 AM.A 4.6 (281ci) block bored .020 over is equivilent to a 284.3ci block. After boring, the cylinder volume increases from 575.81cc to 582.31cc. Using DesktopDyno (eh, closest you can get to making an educated guess) and using the exact same engine configuration, boring over the engine on a stock engine: N/A : increase by 2 HP, 2 TorqueHello all, I am new to this forum please be gentle. I bought a 66 chevelle from my father-in-law about 2 years ago. It has a 396 (bored .30 over) and the problem I am having is that I keep breaking the cluster gear in the 4 speed saginaw transmission. I have had this tranny rebuilt 3...A 454ci engine with a stock 4.00 inch stroke will have a maximum overbore limit of 0.100 - 0.125 inches. This means that if you opt for a 0.100 inch overbore, your engine will have an increased displacement to 476 inches while opting for a 0.125 inch overbore will give you 481 inches, creating what is known as a Rat motor.. Compression is 9.0:1 at best, could be as low as 8Jun 25, 2012 · Depends, if it's a fresh 060" bore y 396 bored 0.30 big block chevy shortblock price dropped Jump to Latest Follow 2K views 8 replies 3 participants last post by 454 bored 20 over. Around 458 or 9 if you round up. This would be wi 1829 posts · Joined 2003. #3 · Aug 10, 2005. i have yet to come across a 396 that wont take .090 over. i have gone as far as 4.250 on the bore to make a 427 bbc. even my current 396 is .090 over. making it 414ci. sonic testing good idea, but i do that if i want more then .090 over, so i can go straight to the 427 bore because of pistons are ... BB Chevy 396 Rebuilt .030 over. Just like it say's This is ...
Continue Reading