07-11-2016, 01:26 PM
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CC Member
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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
Posts: 549
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Just for documentation:
Note - this is on a cold engine. I know the leak down is more accurate on a warm engine as the rings will seal better. Plus, I forgot to hold open the throttle when doing the compression test - but I kept cranking until the pressure was stable.
Compression / Leak down % :
Cyl 1 - 180/5
Cyl 2 - 180/3
Cyl 3 - 175/3
Cyl 4 - 183/3
Cyl 5 - 185/2
Cyl 6 - 184/4
Cyl 7 - 187/6.5
Cyl 8 - 185/3
Last edited by Texasdoc; 07-11-2016 at 05:35 PM..
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