Anybody ever swapped out a heavy( stock) rotating assy for lighter aftermarket?

pittsburghracer said
View attachment 1715488547 View attachment 1715488548 View attachment 1715488549 What’s the matter with 8 3/4’s. My sons been 10.0’s with his at 3200 pounds and transbrake. Should you change out the gears if you race weekly every three years or so. Sure why not.

I went 10.30’s at 3400 few years ago( swapped eddie topend off my flat tappet 416 eddie headed shortblock), went to W5 heads, heads and intake. Zero other changes. Broke the ring and pinion 4th pass footbreaking it.
You start making enough power to run low 10’s in a heavy car, 8.75 rears arent going to last
Opinions vary, that my experience