I've seen A LOT of posts about making HP with a 318-So why is it so ???
318+.030, 9.9cr, unported 308 heads, 1.88/1.50 11/32” stem valves, solid cam, RPM intake, 2bbl adapter, 650cfm annular discharge Holley 2bbl carb(#6425), 1-3/4” headers.
This carb wasn’t legal to run in the car, but it was interesting to see what it did on the dyno.
The class rules mandated a Holley 4412 500cfm 2bbl, which was about 30hp less.
The 650 2bbl we used had the stacks to go with it.
318+.030, 9.9cr, unported 308 heads, 1.88/1.50 11/32” stem valves, solid cam, RPM intake, 2bbl adapter, 650cfm annular discharge Holley 2bbl carb(#6425), 1-3/4” headers.
This carb wasn’t legal to run in the car, but it was interesting to see what it did on the dyno.
The class rules mandated a Holley 4412 500cfm 2bbl, which was about 30hp less.
The 650 2bbl we used had the stacks to go with it.