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Old 06-06-2023, 05:31 PM   #46
'68OrangeSunshine
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Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,098
Re: Fathers 68 stepside overhaul

Quote:
Originally Posted by wpsharpshooter View Post
It had a Holley on it. Dad replaced it about 10-12 years ago. The truck really did sit more than get driven. He had put more carbs on it than he did tires lol.. He bought the truck in 94.. And up until last year, It had the same set of tires on it that it had when he first bought it.
Not a Holley fan. I ran a 4160 R8007, 390 CFM four barrel on an Offy intake on my '68 C/10's 292 L6, with Clifford headers for 25 years. Every time it backfired, I had to replace the 8.5''Hg power valve. Then it had to be retuned. I always had to get a Holley expert to help. When I rebuilt another 292 in 2005, after the 500 mile break-in run, the Holley backfired, and wouldn't hold a tune. We suspected, after 250,000 miles, the plate surface was warped. It was cheaper and easier to go to a 500 CFM Edelbrock 1404.
The AFB design has no power valve. I can tune it myself.
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Every 25 years I like to rebuild that 292, whether it needs it or not.
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