1979 grand prix rear end id

[thegrandprixsniper]

does anyone know what rear end is on my 1979 pontiac grand prix SJ is it a 7.5?????

 

[Evan11]

does anyone know what rear end is on my 1979 pontiac grand prix SJ is it a 7.5?????

Yep..all gbody's got the 7.5 except the GN, 442, '84 Hurst/Olds, etc.

 

[thegrandprixsniper]

does anyone know what rear end is on my 1979 pontiac grand prix SJ is it a 7.5?????

Yep..all gbody's got the 7.5 except the GN, 442, '84 Hurst/Olds, etc.

damn it is there a way i can make this rear end handle 600 hp or should i just upgrade rear ends

 

[Evan11]

Yeah, a 7.5 is fine for normal driving, occasional tire roasting, etc. with 600 Hp, I'd suggest a 8.5 out of the cars I listed or a Ford 9 in set up.

 

[thegrandprixsniper]

Yeah, a 7.5 is fine for normal driving, occasional tire roasting, etc. with 600 Hp, I'd suggest a 8.5 out of the cars I listed or a Ford 9 in set up.

thanks for the info greatly appreciate it one more thing would you know what is the spline count on the axles

 

[Evan11]

You're welcome. The 7.5 in gbodys have 26 spline axles.