GT40's
just a few little questions for the sake of comparison. is there any difference in hp gains between the gt40 cobra and gt40P head on a stock 5.0, and also how much of a gain over the stock heads is there for these heads? im just sorta wondering for sake of knowing, thanx.
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87 GT T-roof (needs paint) lol, rebuilt motor and trans, AOD - stage 2 shift kit, 3.73 gears - auburn posi, Dynomax Super Turbo Cat Back, FRPP 155lph fuel pump, K&N filter - air silencer removed, subframe connectors, strut tower brace.
88 GT T-roof
1989 LX Coupe 5.0 - 5spd
Rice Haters Club member#105
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