Originally Posted by tomthecomic
What makes a holley 650 different than a 750. Is it the body, blocks what. I have a 750 and need a 650 was going to get a 650 and but my rear block and boles on it to make it a bubble pumper.
Check out Holley's detailed website. I thought the main difference between the two carb's is the size of the throats and throttle blades but I could be wrong. Also - believe it or not from my experience you can call Holley's 1-800 tech line and they can help you on Holley's "finer points". Good luck.