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Old November 6th, 2018, 11:59 PM
lizziemeister'sV6 lizziemeister'sV6 is offline
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Join Date: Aug 2013
Location: Strawberry Point, Iowa
Truck: 1965 Suburban Series 1000 - 351M with mechancal tachometer - PS & PB & 2 speed Pow-R-Flow automatic
Age: 70
Posts: 227
Rep Power: 135
lizziemeister'sV6 will become famous soon enoughlizziemeister'sV6 will become famous soon enough
Default Re: New member introducing myself and Holley carb

A couple of other tricks you can do with GMC V6 with the 500 cfm Holley to help rid of the rich condition is first - advance your timing and second - burn a higher octane fuel 89 or 91 would do. Advancing your timing starts the burning sooner and with the slower burning higher octane fuel this provides a better burn cycle. There's no book setting on our modified GMC V6 engines once you alter the factory engineering specs - changing 1 item (carb) starts a snowball effect that takes time to conquer - there's a lot of experienced people on here to help with the puzzle. A better performance cam profile is a great help to get more air when you add more fuel in the mix. Welcome to the forum and Good Luck!
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