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Drivetrain => The Nailhead => Topic started by: BuickGSrules on June 22, 2012, 03:04:05 PM

Title: Bigger carb for my nailhead
Post by: BuickGSrules on June 22, 2012, 03:04:05 PM

Thinking of giving my nailhead a bigger carb. I am running the stock one now, runs good but I have read some times that it likes bigger ones. What would you guys suggest? It has to look pretty stock still.

Title: Re: Bigger carb for my nailhead
Post by: Brian on June 22, 2012, 04:02:42 PM

Best performance upgrade is to find one of the 66 nailhead quadrajet intakes and quadrajet carb.  All 66 Riverias had the quadrajet setup on the 425 in them.

Title: Re: Bigger carb for my nailhead
Post by: GranSportWagon on June 22, 2012, 06:47:23 PM

Brian I agree with the upgrade but would continue on to the early seventies 800 cfm q jet.
Mike S.

Title: Re: Bigger carb for my nailhead
Post by: BuickGSrules on June 23, 2012, 06:10:08 AM

I actually have a 800 cfm Q-jet on my 350 4 speed right now, and when I swap my 464 in that one I could use the 800 on the nail and see what that does.

Title: Re: Bigger carb for my nailhead
Post by: a+autobody on June 23, 2012, 06:03:49 PM

I think I have a manifold with that carb on it I will check tomorrow and post.