Originally Posted by JEFF69Z28
Originally Posted by fast75vega
Originally Posted by billyd21970
what does it help to have a 4/7 swap on the cam?
it helps the motor breath better and free's up some ponies....... about 30 of them on average :wink:
No way your getting 30 hp more by changeing the firing order,5-10 if your lucky.
the one show on speed tv(cant remember which it was) their was on a $3500 crate edelbrock motor.... they dyno'd it right out of the crate and then swapped just the cam for the 4/7 and it made 30 more horse and more torqe...... with the same carb and intake