My first bet, plenum gasket. How many miles on the distributor on the 90k motor??

Leads to second bet, I had a LA 360 30 years ago that had unsteady idle. Guy put it on a scope at Precision Tune (Do they even exist anymore??), and graph showed the timing moving around at idle. Distributor shaft was worn and wobbling (bushing was okay). Replaced the distributor and all was well.


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