GM B-Body Forum
- Posts : 680
Join date : 2013-01-14
Age : 24
Location : Flint/Detroit, MI - Charlotte, NC
I wouldnt worry about the EFE system, its sole job is to get the engine up to operating temps as soon as possible, its default position is open so the exhaust wont be constricted, alot of folks just weld it open if theyre still using the stock exh manifolds. Im assuming since youve got an eddy carb on it your not using the original air cleaner assembly? Again the stock air cleaner assembly with the pre heater duct hose is just to get the engine up to temp asap, but none of that will not cause your car to not start. Your spark plug gap is ok, stock is .45 so .35-.45 is ok on an hei. Any oil in the plugs will cause them to foul and hard starting. Im a holley fan and love them, i also love quadrajets, but if you can id get a holley vac secondaries at a max of 600cfm and even that is on the high side. If you want good low end torque id put a quadrajet on there, the small main butterflies help alot with that. Or just put a smaller edelbrock on there. Its up to you. But what i have discovered is that, the holley is great for upper end power at the sacrifice of some bottom end, and the quadrajet was the exact opposite. I have no experience in edelbrock carbs but was told they were based off the quadrajet.
1979 Caprice Sport Coupe, 400hp Vortec 350, Th350, GM 8.5 w/disc brakes, 3.90 gears Detroit Truetrac, 2.5" stainless duals w/ x-pipe, Dynomax race bullets.
1984 Caprice Sedan, 305 motor, 700r4
1978 Caprice Sedan, 305 motor, th350
1993 L99 Caprice, 4.3 v8, 4l60 trans
1972 Ford F-100, 302 windsor, c4 trans
2001 BMW E46 330i, 3.0L