Quote:

What would a ballpark estimate be on horsepower difference between 10.5 with iron heads and 14.0 with aluminum?



FWIW I was doing a similar comparison with Comp Cams Camquest, and went from 10.5 to 14.5 and saw over 100hp increase. It does not specify iron or aluminum.


1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019