Big Block in my 1981 C3
Thread Starter
Instructor
Joined: May 2004
Posts: 187
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From: Fort Drum New York
Big Block in my 1981 C3
I am seeking some information, I have a 81 Silver/blue Vette with a 4 speed and love it. Problem is I also love Cubic Inches, the more the better. No replacement for displacement :) I know im crazy for wanting to do it, But i want to put a 454 in my vette. Two problems pop into mind, the front springs (not sure i can afford alimunim heads) and hood clearance. Has anyone ever done this? I am running of the assumption that the basic frame is the same for 68-82 models. so if i get headers meant for a 74, they should work. (there is no emmissions where i live) just wondering i this is workable.
Thanks
Thanks
Instructor
Joined: May 2001
Posts: 228
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From: Santa Cruz CA
Re: Big Block in my 1981 C3 (Iskenderian)
You can cut down Ford F-series truck springs, I run .75" wire diameter but you may want to use slightly smaller, perhaps from a F-150. I am sure the junk yards in Texas are full of them.
Team Owner
Joined: Feb 1999
Posts: 34,455
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From: Republic of Texas
Re: Big Block in my 1981 C3 (Schmucker)
It'd be better to put a large displacement small block in. Plus you get to retain the handling and weight transfer.
A aluminum headed BB weighs within a 100lbs of a a iron small block. There are PELNTY BB on the local road course, hell a '68 BB won Le Mans in '72.
