Posted by Grant in CO [64.234.252.6] on Sunday, September 05, 2010 at 12:12:47 :
In Reply to: Poly vs LA posted by John [184.100.6.184] on Sunday, September 05, 2010 at 02:16:44 :
I am a fan of the Poly 318. I think it has more torque. I experienced better milage after I installed a Weiand 7503 manifold. As long as you keep your foot out of it!!. The primaries are a lower CFM than a 2bbl. I have gotten 20mpg in my 64 PWTW after much tuning of the Carter 500cfm. A more efficient engine takes less throttle to keep it moving! Gar
Pic is of mine: (Weiand 1-4bbl manifold, Carter AFB 500cfm and a new 600cfm Holley, Jacobs coil and plug wires. It will get a Mopar Performance Electronic ignition one of these days. Also has a 72 Dual Master with Power vaccum brakes (not in photo).