I have a set of ford racing GT cams for a 4V. These cams with a good tune are suppose to add 100hp to a Cobra motor. These work with factory valve trains, no need for long valves or special springs.
FORD GT SUPERCAR
M-6550-GT
Intake: .450 - 200@.050 (FRPP Advertised - 11.14mm/.456in)
Exhaust: .472 - 209@.050 (FRPP Advertised - 11.36mm/.469in)
Increases lift from the stock 10mm to 11.14mm intake and 11.36mm exhaust
Actually these won't give you very much of a gain over the stock cams. They might give you 10-15 rwhp with a tune. Second you need to run high lift springs with these cams to be safe. These cams have a good powerband range and can make power father in the rpm range than stock cams
You will NOT see a 100hp increase with just these cams and a tune
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