Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 1968 gto 400 build questions
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Old 02-26-2013, 08:54 AM
69 widetrack 69 widetrack is offline
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Quote:
Originally Posted by vinniekq2 View Post
the HEI needs to be upgraded,the stock HEI needs a better external coil.Im not sure what the 400 heads flow so get them tested and make sure the cam matches the heads.It sounds to me like a 13 second combination not 12.
Still not enough information.Are you using slicks or drag radials?
I agree with you Vinnie...but if I'm correct, these cars came out with a 750 CFM Quadrajet right from the factory and I felt that if he's done a few up grades already, he may be under carburated with his 650 Holley.

And yes, more information is always good.

Ray
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