True horsepower?

This was back in 1982, stock springs with snubber only and long shocks....wasn't Stocker type launches!
I used wallace for weight/hp calcs.. .a 12.98@103 is 325hp/3600 according to me.

Reckon your using the Moroso slide?

Later I added a Strip Dom int.
DC.590 solid
4200converter
4.30's
10x28's
850DP
1.75" race hdrs
same back end
= 12.43@108 = 370fly hp
stock 2.02 heads no porting