I am considering lowering the compression in my 363 ( 30over 360 magnum block, W2 heads, 590 lift M/P mech. cam) from 11.5 to 1 to 9.5 to 1 so i can use pump gas. It made 549 hp and 450 tq on the dyno and went 10.60s at 125 in my Dart. 3150 lbs, 4.30 gear, 4800 stall Converter, 904. How much power will i loose? I stopped it down to run 11.50s. will it run high 10s-low 11s? Don't mind losing a little but still want to be able to run 11.40s in bad air.

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Last edited by 11secdart; 12/25/18 05:35 PM.
68 Dart 410 / 904
92 D150 original owner
21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4
23 Audi Q5
16 Honda HRV