Quote:
Originally Posted by 455TA
Did the headers fit without doing modifications to the subframe, and without the motor plates?
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Yes, they did fit with the engine in the factory location. The only interference point was on the block itself. We had to grind the block a small amount where the header just touched it. (red circle, picture is just for illustration, not the actual block). As others have stated, I don't know if there would be an interference at the power steering pump. Thinking probably so, but if you have been working with Pontiacs for as long as I have you know that you are going to have to fabricate and modify things to get the result you want. These headers are still an awesome value and welcome addition to the Pontiac aftermarket!
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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
Last edited by ErikW; 03-16-2020 at 03:33 PM.
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