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Old 08-22-2016, 05:44 PM
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Texasdoc Texasdoc is offline
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Join Date: Feb 2012
Location: Keller, TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
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Good news - springs worked! Pulls up above 5000 rpm. No missing, however it does need tuning. It doesn't seem to be as quick as it should be. Seems like it runs out of steam around 4500 rpm. Still runs very rich off idle and stays rich throughout the run. Low power cruise at 40 mph around 1800 rpm, it is around 11-12:1. Seems like this would still be in the transition circuit. It leans out a bit (relatively to 13:1) at WOT closer to 4000 rpm, so I think the jets are fine.
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