318 Breaking Up @ 4,500 RPM

My 72 Dodge D-100 has a 317/727 combo with stock heads and an Eddy Performer - 625 CFM carb. The truck runs great below 4,500 RPM but the ignition starts breaking up around 4,500 at full throttle and it falls on its face. It also pops up the dipstick a hair when this happens.

The truck has been converted to electronic ignition by the previous owner and it has an MSD coil with 8mm wires. The plugs are new as well and initial timing is set at 8 - 10 advanced. It also has a new chrome...

318 Breaking Up @ 4,500 RPM
Author: admin