Franzh, I have recently installed a dual 425 setup in place of the original 300 setup in hopes of more top end. I cannot get the tuning right. Is this too much for my stock 88 454? Should I go with a single 425? And could you explain wether the center screw or outer screw is the max power valve...
Franzh, I have recently installed a dual 425 impco setup on my stock 88 454. I am having trouble getting it tuned right. It seems that it can not handle a wide open throttle(too much flow.) Should I go with just a single 425. Also it has no power. Is this due to timing or am I perhaps adjusting...
