427 Small Block
Thread Starter
Heel & Toe
Joined: Mar 2006
Posts: 17
Likes: 0
From: Iowa Park Texas
427 Small Block
Anyone on here run a "Big" inch small block in a C2? I am considering building a 427 sm blk for my 64.. my coupe will never be a correct #'s perfect car .. so why not do something a little differant? I have built a ton of 406" and 383" sb's but never a 427.. would like some opinions?
Last edited by MPK; Apr 18, 2006 at 06:41 PM.
Drifting
Joined: Feb 2005
Posts: 1,798
Likes: 12
From: Southeastern VA
Built a 421 and LOVED it. Can send you the specs and video on engine dyno along with some tire melting footage after it was installed. Made 560HP and 535 lbft of torque thru the exhaust on the engine dyno and had honest to goodness street manors (made over 500 HP from 4200-7200 rpm and peak torque at 3400 rpm) 
Would roast the tires in any gear, any time 
What a hoot!
http://forums.corvetteforum.com/show....php?t=1363187
Would roast the tires in any gear, any time What a hoot!http://forums.corvetteforum.com/show....php?t=1363187
Drifting
Joined: Feb 2006
Posts: 1,840
Likes: 29
From: Towaco NJ
I don't know if you consider a 395 inch sbc a big inch motor, but I do. My engine is bored to 4.25" with a 3.48" stroke. It will pull 7500 rpm all day long. 383, 406, 427, 454 sbc are low rpm torque engines. My combination is like a larger 302. I would rather have a screaming small block chevy than a truck torque motor.
Drifting
Joined: Feb 2005
Posts: 1,798
Likes: 12
From: Southeastern VA
Originally Posted by vetrod62
I don't know if you consider a 395 inch sbc a big inch motor, but I do. My engine is bored to 4.25" with a 3.48" stroke. It will pull 7500 rpm all day long. 383, 406, 427, 454 sbc are low rpm torque engines. My combination is like a larger 302. I would rather have a screaming small block chevy than a truck torque motor.
Vetrod62 has a great set-up, I have seen this combo in action before, it's no joke.....it will run!! It also uses a stroke that is much easier to find (3.48 is same as 350 cid) and will most likely be less expensive if you can use the smaller main journal in your block. Vetrod, did you even need to clearance the pan skirt in the block? Good luck with your quest for cubes!!
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
SBC "400 Platform" Strokers
Originally Posted by MPK
Anyone on here run a "Big" inch small block in a C2? I am considering building a 427 sm blk for my 64.. my coupe will never be a correct #'s perfect car .. so why not do something a little differant? I have built a ton of 406" and 383" sb's but never a 427.. would like some opinions?
P.S. On "fuel" units, 421"/434", we have over 730 HP with the G.M. block and 23 degree topend. I've placed a "shot" (again) of a 406" we just delivered to a local racer in a '72 El Camino. Came off the dyno at 580 HP and 525 Ft.Lbs. torque at 6600/5500 respectively. Drives around town fine on 93 Octane and races fine on 100 unleaded, which we can buy at the pump still, here in N.Y.
Live Free or Die
Joined: Apr 2000
Posts: 7,943
Likes: 27
From: One thing is for sure this kind of discourse and BS would not be tolerated on the NCRS forum. Ohio
I have a stock block 406 in my '57 with Dart Sportsman heads. I put down 456 at the rear wheels on 93 octane. The car is driven a lot and has been on three or four 3000 mile road trips.
This number was about 50 HP less the the engine dyno number because I wanted to keep it under the stock hood and had to remove the carb spacer and they used 1 7/8 headers on the dyno and I have cheapie Summit 1 5/8 headers.
Nothing I can do about the carb spacer because I want the stock hood and I hope to get a custom set of headers built this summer.
This number was about 50 HP less the the engine dyno number because I wanted to keep it under the stock hood and had to remove the carb spacer and they used 1 7/8 headers on the dyno and I have cheapie Summit 1 5/8 headers.
Nothing I can do about the carb spacer because I want the stock hood and I hope to get a custom set of headers built this summer.
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Drifting
Joined: Feb 2006
Posts: 1,840
Likes: 29
From: Towaco NJ
Originally Posted by 1coolC2
The 421 revs better than the DZ302 that I had in the 69 Z, even with the 140 cam and Phase 2 Bowtie heads on it!! Shifted this 421 at the track at 7400 rpm every pass (peak HP was 6950 rpm). With 6" Oliver stroker rods, the rod stroke angle is actually better than most all other small blocks. You can build these big motors to turn some serious R's and still have good torque numbers. I sent ya some video's of dyno and street runs!
Vetrod62 has a great set-up, I have seen this combo in action before, it's no joke.....it will run!! It also uses a stroke that is much easier to find (3.48 is same as 350 cid) and will most likely be less expensive if you can use the smaller main journal in your block. Vetrod, did you even need to clearance the pan skirt in the block? Good luck with your quest for cubes!!
Vetrod62 has a great set-up, I have seen this combo in action before, it's no joke.....it will run!! It also uses a stroke that is much easier to find (3.48 is same as 350 cid) and will most likely be less expensive if you can use the smaller main journal in your block. Vetrod, did you even need to clearance the pan skirt in the block? Good luck with your quest for cubes!!
1coolC2... I did not have to clearance the block. In this vette I use a Dart little M block with 350 mains, scat 4340 3.48 crank, 6'' eagle H beams, comp solid roller, crower hippo lifters, brodix T1 cnc heads and wiseco custom pistons.
The fact is either a long or short stroke engine can make big power if the builder knows his stuff.
We can add this along list of subjects the will be argued long after we are all gone.
ford vs chevy (we know the answer to that one)
horse power vs torque
solid vs hydraulic
automatic vs stick
small block vs big block and
big bore/ short stroke vs smaller bore/ long stroke.
I have been following your SRIII project with interest. Looking GOOD.
To MPK..
My final thoughts on big inch sbc,s are , you had better use good parts if you expect to use and abuse it and have it last any time at all.
395 CI
Drifting
Joined: Feb 2005
Posts: 1,798
Likes: 12
From: Southeastern VA
VETROD,
Roger that on the engine builder. John Bray (AKA John Bray Race engines, multiple NHRA record holder) built the 421 for me. Your dead on with your staement about using good parts with one of these builds. It would be a shame to spend that chunck of change to lose everything to the one cheap part you tried to skimp on.
How far are you from Marlton NJ??? My sister lives up there and I would love to check out your ride next time I'm in NJ.
Roger that on the engine builder. John Bray (AKA John Bray Race engines, multiple NHRA record holder) built the 421 for me. Your dead on with your staement about using good parts with one of these builds. It would be a shame to spend that chunck of change to lose everything to the one cheap part you tried to skimp on.
How far are you from Marlton NJ??? My sister lives up there and I would love to check out your ride next time I'm in NJ.
Drifting
Joined: Feb 2005
Posts: 1,798
Likes: 12
From: Southeastern VA
Here's a video link to my Z/28 with the 421 roasting the skins on a 2nd gear brake stand (no line lock at the time) followed by a granny shift and 3rd gear rip. You can hear it hit the 7400 rev-limiter before I lifted. Hope this link works.
http://media.putfile.com/Burnout-71-93
Hope this link works.http://media.putfile.com/Burnout-71-93
Drifting
Joined: Feb 2006
Posts: 1,840
Likes: 29
From: Towaco NJ
Originally Posted by 1coolC2
Here's a video link to my Z/28 with the 421 roasting the skins on a 2nd gear brake stand (no line lock at the time) followed by a granny shift and 3rd gear rip. You can hear it hit the 7400 rev-limiter before I lifted. Hope this link works.
http://media.putfile.com/Burnout-71-93
Hope this link works.http://media.putfile.com/Burnout-71-93
1coolC2, I am about 2 hours north of Marlton, nj.
The video came out fine. That is my kind of fun. My last pair of bfg 315 drag radials only lasted 150 miles before all the steel cord was showing. They never made it to the track. Probably they were defective.
Thread Starter
Heel & Toe
Joined: Mar 2006
Posts: 17
Likes: 0
From: Iowa Park Texas
I appreciate all the comments about differant combo's.. We have built a lot of engines out of our shop.. just not a big inch small block. I plan on building a cruiser with plenty of power but I will not be flogging on it much (I have a 75 Gremlin with a 6:71 enhanced 355 for that ) I will look at the combos and figure out whats best for me..Thanks all,
Monte Kerr
MPKperformance
) I will look at the combos and figure out whats best for me..Thanks all,Monte Kerr
MPKperformance
