Originally Posted by SSedan64
75 Monte came with the 8.5" 10-bolt, a very strong Rear.
If your Cam requires that much stall a 373-410 gear would be better.
The larger Cam moves the engine's power band to a much higher rpm, so you need a numerically higher gear ratio to optimize acceleration.
An O/D Trans would give you the best of both worlds, use 3rd in the 1/4mi and O/D for cruising.
Thanks for the info.
Do the gears literally just swap right out? Or does the whole back have to drop and replaced? And what other mods would need to be done in order to make new gearing work properly?
Again, totally new to the rearends right now... so sorry for the nOObie questions. I do appreciate the help!