04-18-2005, 06:49 AM
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6th Generation Texan
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Join Date: Feb 2002
Location: Devil's Backbone,RR 32,
TX
Cobra Make, Engine: Lone Star Classics #240,Candy Apple Red,Keith Craft 418w - 602 HP,584 TQ
Posts: 8,157
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Not Ranked
I run 6 - 6.5 with a Holley Blue pump.Have run the Black pump as well.
Just my opinion,with 425" I'm not sure if you have enough capacity with a Red pump for anything more than tooling around and short bursts.
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