Wat all can i do to my inline 6?

Question

Ive a got split manifold header and a intake set up for a 4bbl carb wat else can i do for horsepower im truck pullin in prostock 4wd class

Answer 1

what kind of 6 is this? ford? AMC? Slowpar?

DO the class rules allow modifications to the engine?

If they do, get a towing or RV cam, something with lower valve lift and a short duration like 204-214 @ .050, dont forget to add a little compression with a thinner head gasket, or haveing the head milled .010-.020, this wil ad plenty of bottom end grunt plus a little extra ponies up top

Answer 2

have the head shaved, double roller timing chain, 3/4 or full cam.