05yellowgt
Senior Member
Hell the 6.2 won't NEED 4v heads to be able to replace a 5.4 4v. If the motor can make 412hp in truck trim, put a manifold, and cams designed for higher RPM operation that you want in a car and pump the compression some to run an adaptive tune for 87 and 91 like the Coyote has and see what happens.
