Quote Originally Posted by lebanon View Post
I am running a couple of HIF SU Carbs and have changed the the camshaft to a 3.9 type.

Later on I have installed a 4.2L engine fed with the same SU carbs.
Certainly,even a high compression 4.6 can easily get enough fuel with HIF carbs if needles are correct. simpler than EFI and Makes a ton of torque, too

JC