The pistons could be hung correctly on the rods just installed backwards. In any case it needs to come apart and some changes made in that area. Mistakes happen, and it's a LOT easier with a Pontiac build the being different in lay-out than a Chevy engine.....
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73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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