Incorrect timming can also cause detonation damage, In '80 I rebuilt a
SB350 with flat top pistons that had silver dollar size cracks/holes in
them,(all 8). The owner complained of lack of power....wonder why?! ...
I'll bet it really rattled!
Sheldon Schmidt
'56 napco 4x4 (soon to have a 430 hp SB 350!)
-----Original Message-----
From: Kevin Lake [SMTP:lakek@oit.edu]
Sent: Monday, May 31, 1999 10:42 PM
To: MarkNoakes@aol.com; oletrucks@autox.team.net
Subject: Re: [oletrucks] Octane inquiry
Amen! Anything above about 9.5:1 is very difficult to find gas for these
days (unless you have keys to the airport 100LL pumps 8^) ). I had a
302ci F#$d that was running 10.5:1 and a small-block Chevy (350ci) that
was 11.5:1, both motors had a critical NEED for high octane gas. I was
buying 104+ Octane Boost by the case for about 2 years. In very severe
cases, detonation can blow a hole in the top or a piston, or even bend
rods. It is not something to look forward to. A friends 396ci Chevy blew
holes in the top of two pistons due to severe detonation.
Kevin Lake
56 GMC Suburban/napco
----------
> From: MarkNoakes@aol.com
> To: oletrucks@autox.team.net
> Subject: Re: [oletrucks] Octane inquiry
> Date: Monday, May 31, 1999 4:12 PM
>
<snip>
>Try proving that high octane gas doesn't matter in an
> 11:1 compression ratio late 60's muscle car. Running low octane will
destroy
> them.
<snip>
>
> Anyone else?
>
> Mark Noakes
> Knoxville, TN
> 58/56 Suburban
> 66 Corvair Monza
> 86 Silverado
> 86 Corvette Indy convertible
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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