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One other thing to check. When sitting with a timing light on it, if you hold it @ (any RPM it acts up) does your timing mark jump around, or is it steady within 1-2 degrees? If it jumps excessively, might be worn timing chain/gears. Just a thought...



Same result could be worn distributor shaft and/or bushing.


I personally have had trouble with OEM fuel pumps on SB performance apps. Make sure you have good fuel pressure under all conditions...

All that said, I'd bet on lean carb conditions, need metering rod/ spring changes (easiest), possibly jetting changes.

Last edited by GO_Fish; 05/22/09 11:12 PM.
Scott B. "I'm a self-made man... I started with nothing, and I still have most of it!" 68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph 69 340 GTS stock 14.18@ 95.60 mph 01 5.9L Ram 1500 Quad Cab 4x4 01 3.5L 300M 16.23@ 86.97 mph