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Secondary jet sizing Secondary jet sizing
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Old 05-31-2005, 11:18 AM
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Join Date: Oct 2004
Location: Roanoke, Tx
Cobra Make, Engine: 2002 Lone Star Classics LS427, 428 CJ engine stroked to 464, 580hp/590tq at flywheel
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Default Secondary jet sizing
How do you tell when you have large enough jets in your secondary without going back and forth to the dyno? When I had mine dynoed a while back they said I was running lean at WOL. I upsized the pri and sec from 76/83 to 79/86 and found it too rich at low end so I had to go back to the 76 on pri, but left the 86s in on sec. Low end now back great but I feel I could feed more gas on the sec side - it just acts like it could use more. I have also changed my pipes to less restrictive. Any good tricks?

I have Street Demon 750, fairly stock 428 (I think it has a one step up cam)with edelbrock performer intake.

Bruce
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