So I bought a real nice 99 I had plans to swap all my stuff from my rusttrucket over but i have decided I'd like my driver to stay friendly so it just got LT's, intake and tune. Anyhow I figured I've already got some good stuff in the gold truck slightly built 60e, 3200 stall, vette servo, cooler. Not long ago I put a new rear end under it with atomic relocation brackets and load bearing shocks. The truck currently has a 224/230 cam, btr springs, I/H/E tuned by atomic it ran ok, but plans now since it'll be a toy I'm going to a 212/212 .561 cam, ported doorman Intake and it will be sprayed 100ish. My question is as it's sits it's a 3.73 now would ya leave it as is or go with 4.30s,4.56s,4.88s? Truck will most likely see the 1/8th just for fun.

 

Rear gear would also depend on tire size diameter. Plug in the gear, tire size etc. into one of the calculators at wallace racing to get some idea RPM, MPH etc. Congrats on the new truck!