Block question
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,587
Likes: 0
From: Omaha NE
Block question
I am going to add a blower to my current setup, and am going to buy another block to build up so I can just swap it in. I was wondering if I should get the 4 bolt or the 2 bolt. I know you can splay the cap on the 2 bolt and make it stronger than the 4 bolt, but how much hp can each setup handle(2 bolt, 4 bolt, 2 bolt splayed)?
Drifting
Joined: Dec 1999
Posts: 1,315
Likes: 27
From: Central Florida
Re: Block question (BAdAzZV8)
I am going to add a blower to my current setup, and am going to buy another block to build up so I can just swap it in. I was wondering if I should get the 4 bolt or the 2 bolt. I know you can splay the cap on the 2 bolt and make it stronger than the 4 bolt, but how much hp can each setup handle(2 bolt, 4 bolt, 2 bolt splayed)?
block out of an f-body and installed 4-bolt spayed caps for about
$450, including the caps.
Russ
Gainesville, FL
Melting Slicks
Joined: Sep 2002
Posts: 2,631
Likes: 0
From: Union City CA
Re: Block question (BAdAzZV8)
I would have to say a High Performance engine would have to use 4 bolts, thats a must, how are you building your engine? Are you going 383 or BIG BLOCK??? :rofl: :rofl: :rofl:
Drifting
Joined: Dec 1999
Posts: 1,315
Likes: 27
From: Central Florida
Re: Block question (95AquaC4)
Splayed stronger than standard 4-bolt? Hmmm. learn something new everyday! :D
block. From what I understand, more load is spread to the outside main
cap webbing. I would guess that all aftermarket "race" blocks have them.
In my case, The increased cost of adding splayed caps was partially
offset by using a less expensive, and easier to find 2-bolt block. ($150)
A great mod for people needing a very strong bottom-end... Hi-Revers,
strokers, and blown motors.
Russ
Drifting
Joined: Dec 1999
Posts: 1,315
Likes: 27
From: Central Florida
Re: Block question (BAdAzZV8)
hey monks, how much hp are you pushing?
FYI, I will have the car at the NCCC Corvette show next Saturday
(Jan 18th) at the Thornbrook Shopping center on 43rd St. in Gainesville.
Russ
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Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,587
Likes: 0
From: Omaha NE
Re: Block question (Light84vette)
I would have to say a High Performance engine would have to use 4 bolts, thats a must, how are you building your engine? Are you going 383 or BIG BLOCK??? :rofl: :rofl: :rofl:
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Re: Block question (BAdAzZV8)
Oh, and no big block and no stroker motor. I already have a vortech s/c to put on, but I want to forge the bottom end and maybe put a head/cam package on it after I get the bottom end done.
Melting Slicks
Joined: Sep 2002
Posts: 2,631
Likes: 0
From: Union City CA
Re: Block question (cprgmr)
Oh, and no big block and no stroker motor. I already have a vortech s/c to put on, but I want to forge the bottom end and maybe put a head/cam package on it after I get the bottom end done.
Ummm... If you're going to take your motor out to do a forged bottom end, why wouldn't you go to a 383? I've done a little research (going to do a top-end and a 8psi ProCharger) and from the conversations I've had, a blown 383 makes awesome power! :)
Ummm... If you're going to take your motor out to do a forged bottom end, why wouldn't you go to a 383? I've done a little research (going to do a top-end and a 8psi ProCharger) and from the conversations I've had, a blown 383 makes awesome power! :)
Melting Slicks
Joined: Sep 2002
Posts: 2,631
Likes: 0
From: Union City CA
Re: Block question (Light84vette)
I'd say with a 383CID SBC and with some high flow heads, intake and exhuast with a 15-17psi SC, I think you'll be able to reach the 650HP Mark eaisly. :yesnod: :yesnod:
Pro
Joined: Sep 2002
Posts: 500
Likes: 0
From: Mississauga ONT
Re: Block question (BAdAzZV8)
Go with the 4 bolt. Splaying the 2 bolt is not a good idea. The splay pulls at parts of the block and can actually distort the block, kinda like flexing. cant remember exactly what my tuner was saying about the 2 bolt and splaying but he said stay away. 4 bolts are in demand for a reason. :)
:cheers:
:cheers:
Drifting
Joined: Dec 1999
Posts: 1,315
Likes: 27
From: Central Florida
Re: Block question (388 SOLid RoLLeR)
Go with the 4 bolt. Splaying the 2 bolt is not a good idea. The splay pulls at parts of the block and can actually distort the block, kinda like flexing. cant remember exactly what my tuner was saying about the 2 bolt and splaying but he said stay away. 4 bolts are in demand for a reason. :)
:cheers:
:cheers:
they do not distort the block. Talk to any good race engine builder, and
they will recommend splayed caps for the strongest bottom-end.
Russ