Re: dumb question of the week
Posted by:
MoparNorm
(Moderator)
Posts: 1,441
Date: July 05, 2009 06:36PM
The year 1975 was the start of the smog motor dark ages. I don't have the data handy, but 1973 HP was 150 for that motor, 1975 was most likely less, in the 135-140 range.
Depending upon the carb CFM and type of intake, you might get back 30-35 HP, headers would add about 20-25 more, the cam, depending upon lift and duration, 25-30, so potentially 210-230 HP.
The only real way to know is to dyno and tune and time while on the dyno.