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Thread: Pontiac set ups
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02-02-2007 #20
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The Holley Dominator intake modified by Dave Bisshop was the pattern for the Tomahawk. The Tomahawk has some flow issues on #1 and #2 and they can run lean if running a Q jet and NO spacer. Not as bad with a square bore carb like a Holley.
YH 1970 455 crank and 2 bolt main block 0.030 20cc dish Ross pistons, SCAT rods 6.625 Pontiac journals. 72cc E heads KRE CNC ported to 320 cfm 2.11/1.66 valves. Ultradyne/Lunati 239/247 @ 0.050 on a 112 LS, 107 IC. 1.8 Crower rockers on the intake 1.65(1.7 real) Harland Sharp on the exhaust. Torker II welded for taller ports 2.350".Holley 850 DP, no rear PV, rear jet extensions. 2" Super Comps into a 3" Dr. Gas X crossover ,welded Ultraflows, 3" mandrel Torque Tech tailpipes.
10.99 @ 124 mph with a air cleaner and Shaker on the motor.
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