318 build.
I have put on speedmaster 170 heads 65cc, cool gap manifold pertronix 3 distributor. Thumper can .514 lift its .040 over. Question is I have a 550 low end holly, or a 750 single pump with race bowls. I fell I relly need a 650. Any help would be great I will put up a small 6sec video to so you can hear. Please any thoughts will be great.
I have put on speedmaster 170 heads 65cc, cool gap manifold pertronix 3 distributor. Thumper can .514 lift its .040 over. Question is I have a 550 low end holly, or a 750 single pump with race bowls. I fell I relly need a 650. Any help would be great I will put up a small 6sec video to so you can hear. Please any thoughts will be great.
