by Kevin Bottorff <kevyNOSPAM@[EMAIL PROTECTED]
>
Jan 2, 2007 at 12:57 AM
hot-454@[EMAIL PROTECTED]
wrote in news:1167441997.320969.71240
@[EMAIL PROTECTED]
> i have early model 454 in a gmc pickup. I run premium gas. I have a
> compression ratio of 10.50/1 my cam is advanced 4 degrees but no
> matter how I have the timing it pings at hard excel. I have almost all
> spec for my cam size( intake lift 0.475in exh lift 0.500in)( intake
> duration 264.0 exhaust duration 274.0) my piston are 230 domed sealed
> power fordged
>
>
>
then get your dist. recurved for the eng. KB
--
Thunder S**** #9
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