Old School vs Magnum on 86 Dodge W100

And on that note, the baby step 360 roller cam in the W100 with 31X10.50-15s and 3.21 gears doesn’t really start to pull hard until over 2000 rpm. If we had an offset key or a timing set we would have installed it 4 degrees advanced to pick up a little more cranking compression. With the 109 LSA, it would work well. The original plan was a 360 Magnum that had 160 psi cranking compression. Unfortunately, the two dead cylinders from improper storage at the junkyard relegated that short block to the scrap heap. A set of 3.73 or lower gears and some headers with an X flow muffler would help a whole lot with towing here in the vertical territory. But it’s still leaps and bounds ahead of the roller cam 318 with a base Performer intake and the same carburetor.