Quote: Really nice combo. With the availability of the new World blocks and the longer stroke cranks I think we'll start to see a lot more of these big inch engines hitting the street. Looks like that 337 intake worked just fine on your motor.
Did you use a double valley cover or did you make some end rails and use the floor of the 337 as the valley cover?
Andy, the 337 was the best manifold on this build for sure. Dwayne says it has the sharpest throttle response and will have the best drivability in the car. The smaller runners are most likely keeping the velocity up and the carb signal strong. It was even more responsive than the ICH dual plane according to Dwayne and made better power. I'll post those results below.
Dwayne used the ICH valley cover with the removable center underneath the cast in 337 valley plate.
