Hiya,
It's a 350 four bolt studded with flat top pistons and 71cc 2.02 World heads.
Ceramic headers with 3" stainless pipe with dynaflow knockoffs. Weiand dual plane with a re jetted 600 Edelbrock carter type. Re-curved distributor with a street-Fire ignition module. Nos hotshot adding 125-130 hp and a K & N filter.
Lunati 400 with flat hydraulic lifters and roller rockers. Hi volume oil pump with 8 qt Milodon pan and everything I could do has been beefed up.

Transmission THM 350 with B &M stage 1 shift kit and transmission cooler. Stock 2200 torque converter.

Rear is 8.5 10 bolt chevy with 2.76 stock gears with a lockrite posi.

I'da thought it would do better.

Ordered 3.76 gears for the ring and pinion replacement.
All I could think of.