Thread: gt40 vs gt40p
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Old 08-09-2003, 02:35 AM   #4 (permalink)
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Join Date: Sep 2002
Location: TEXAS
Posts: 161
Default GT40's

I think the GT40 Iron heads are better for me. There flow data is almost exactly the same as the GT40P's
My set i have burns the fuel perfect!... gold strap with slighty blue half way.... the dyno A/F was right on 12:1

1. GT40 heads can use normal headers, the P's have to have special headers...$$$
2. GT40 heads work with the factory smog lines, and the P's do not accept factory emissions.
3. GT40 heads have larger Exhaust valves from factory.

just my opinion And i got a pair for $425, that had $600 worth of work done to them brand spanking right outta the machine shop.
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