Thread: ford 289 cam size

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Originally Posted by 66black289

ok this is what i got so far, an edelbrock rpm airgap intake, roller rockers, holley 600 cfm double pumper, mallory distributor, and a set of hooker headers. now my problem is that i bought a set of gt40p heads, and im looking for the right headers to fit my 66 mustang. oh i found out by opening the engine that its not stock anymore, its been bored .030 over and it has a high volume oil pump but still with the stock crank.

GT40P oval port header: Patriot Full-Length Headers H8426 - Free Shipping on Orders Over $99 at Summit Racing

hello iv got a set of 1970 shorty headers rusty but good matle of mustang if they work 100.00 + shipping