468 Pontiac engine warming up on dyno makes 558 horsepower and 583 ft lbs of torque

This is a 468 cid Pontiac engine we built for Mike Matuszek and his '66 GTO. The engine is based off a 455 cid pontiac block. An Eagle crank and rod combo was used on the bottom end along with a set of KB forged pistons. A Tin Indian Performance custom ground Comp Cams hyd roller was also used with Comp Cams hyd roller lifters. The engine is topped off with Performer RPM cylinder heads and intake. We also used one of our custom 4150 1" spacers with the 950 cfm quick fuel carb. The combo pulled 11" of vac at 850 rpm! It made 558 hp and 583 ft lbs of torque. ALL ON PUMP GAS!!!

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