HESCO - Complete bolt-on 4.0 head
Posted: November 8th, 2016, 8:36 am
I have a heavily modified 84CJ7 with a crack in the clifford header. So I'm thinking of replacing the header with Borla. I was also thinking about gaining additional HP for highway driving by replacing my 4.2 head with a 4.0 head. I already have a larger cam, Howell FI and HEI distributor.
My question is would it be worth swapping in: HESCO Part Number:HES4240CHC, - Converts the 4.2L to the 4.0L cylinder head using the superior 1991-up high port head casting. Designed to let your fuel starved 4.2L perform to it's fullest potential. Provides a snappy throttle response with increased torque and horsepower. Complete bolt-on kit includes modified cylinder head with head gasket and valve cover. Will require a 4.0L exhaust manifold or header.
This seems like an easy swap, has anyone done it, successfully?
Thanks,
84cj
My question is would it be worth swapping in: HESCO Part Number:HES4240CHC, - Converts the 4.2L to the 4.0L cylinder head using the superior 1991-up high port head casting. Designed to let your fuel starved 4.2L perform to it's fullest potential. Provides a snappy throttle response with increased torque and horsepower. Complete bolt-on kit includes modified cylinder head with head gasket and valve cover. Will require a 4.0L exhaust manifold or header.
This seems like an easy swap, has anyone done it, successfully?
Thanks,
84cj