Hey Rich,
Do you have a vacuum gauge? If so try setting the timming like so; set idle speed about 750-800rpm. Then advance timming until you have about 15 inches of vacuum. I have a 300/350 target engine in my 65 SS which is basiclly the same engine except for the heads. My engine idles about 850rpm in neautral and shows 15 inches of vacuum with inital timming set at 12 degrees btdc. In gear against the brakes it idles about 750rpm (with B&M hole shot converter) and holds about 12 inches of vacuum. Your problems sounds like the timming is late (retarded) or you have a vacuum leak. Also on my AFB, I had trouble getting the engine to to idle under load when I first put it back together because one of the idle jets had picked up a piece of junk during the engine swap. Check that also. I have two of these engines both with Edelbrock performer manifolds and 625 AFBs and they idle very reliabily around 800-900 rpm. They both pull good idle vacuum as well. Please post what you find out. Good luck. mgg
[This message has been edited by Manny Gomez (edited 07-17-99).]
Do you have a vacuum gauge? If so try setting the timming like so; set idle speed about 750-800rpm. Then advance timming until you have about 15 inches of vacuum. I have a 300/350 target engine in my 65 SS which is basiclly the same engine except for the heads. My engine idles about 850rpm in neautral and shows 15 inches of vacuum with inital timming set at 12 degrees btdc. In gear against the brakes it idles about 750rpm (with B&M hole shot converter) and holds about 12 inches of vacuum. Your problems sounds like the timming is late (retarded) or you have a vacuum leak. Also on my AFB, I had trouble getting the engine to to idle under load when I first put it back together because one of the idle jets had picked up a piece of junk during the engine swap. Check that also. I have two of these engines both with Edelbrock performer manifolds and 625 AFBs and they idle very reliabily around 800-900 rpm. They both pull good idle vacuum as well. Please post what you find out. Good luck. mgg
[This message has been edited by Manny Gomez (edited 07-17-99).]
