Yeah, definetly something wrong. You should be running quicker with those heads and gears. Mine ran a 13.50 at 101.5 and i only had re worked stock heads, and get this: the stock 2:73 gears on the old 7.5 rear end. I have the Performer RPM intake with holley 600 carb. You should be hitting high to mid 12's. Could be pushrod length maybe not opening valves enough to make use of the heads?
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5.0, Holley heads, 1.7 Scorp Rockers, Stealth intake, Holley 600 carb, Holley Mech. Fuel pump, MSD 6Digital, MSD distributor, Hotchkis upper/lower rear control arms, FMS B Springs, 3:73 (8.8) rear.
Production # 9,377
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