I think you could keep your existing distributor and add an MSD cpacitive discharge unit. I've been running one for near 20 years now with never a hickup. You can get a version with a rev limiter. I use the original points as a trigger. Occasionally I have to clean the points with a file as the MSD doesn't draw enough current through the points to keep them clean. I also have to do that if the truck sits over the winter. Same deal with the magneto points on my old Matchless motorcycle.

Rapid engine acceleration in lower gears is also hard on accessories driven off the engine like air compressors, water pumps, and so forth. Same with rapid deceleration. On big diesels we were repeatedly told not to shift with the jake on to make the next gear as it would tear up the accessory drive and accessories. Very expensive on a big Cummins. Not cheap on a 427 either. On some trucks the shop put the jake switch on the floor next to the clutch so you couldn't do that. Of course some guys would shift without the clutch and do it anyway but never within earshot of the yard.


1951 3800 1-ton
"Earning its keep from the get-go"
In the DITY Gallery
1962 261 (w/cam, Fenton headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.