69 GTO, 455, 4-spd.
71 455 HO block with 4-bolt mains 0-decked and bored 40 over. 85 cc KRE heads, gasket matched to RPM intake, otherwise heads out of the box. Crower 60919 cam (231/240), with Scorpion 1.65 roller rockers. Compression ratio yields 10.4 to 1.
Doug's headers...3" exhaust with X-crossover to 3" Xlerator mufflers, then 2.5" tailpipes out the back.
Q-jet reworked by Cliff Ruggles, using 3/4" modified spacer. MSD distributer (initial 12 degrees, 30 total). MSD blaster coil and 6AL box. Adding a 2-Step box for better launch rpm control. Fuel line...1/2" tapped into the tank right to the carb (modified inlet to accept 1/2 " line). Fuel pump...McRobb mechanical...pressure set to 6 lbs.
Trans...Liberty-built Chrysler iron case A-833 Hemi 4-spd (2.65 1st gear). New steel drive shaft 1350 U-joints at both ends. Driveshaft loop.
Diff...Chev 12 bolt, Eaton posi, Yukon 33 spline axles, 3.42 gears on 275/60/15 M/T Drag Radials. 11" drum brakes
Only had the car out to track once. 12.80 @109. No tuning or tweaking. Was having some clutch/launching issues which have since been sorted out. Can't wait to try it again. Thinking if I can get out the hole at full power and power shift, she might be down into low 12s. I'm hoping.
Great to see what others are running
Mike
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