Break My Rear
Thread Starter
Mach I Section Moderator
Joined: Mar 2007
Posts: 7,140
From: round abouts these parts
how much abuse can i put my little 1967 7.5" reaer end through with my new setup
331
E303 cam
Scat crank, rods, pistons
"beefed" up c4 with a shift kit?
331
E303 cam
Scat crank, rods, pistons
"beefed" up c4 with a shift kit?
ORIGINAL: USMCrebel
how much abuse can i put my little 1967 7.5" reaer end through with my new setup
331
E303 cam
Scat crank, rods, pistons
"beefed" up c4 with a shift kit?
how much abuse can i put my little 1967 7.5" reaer end through with my new setup
331
E303 cam
Scat crank, rods, pistons
"beefed" up c4 with a shift kit?
Ford went to the 8" for the V8 which had ~200 net hp, less than 150 to the wheels. They used the 9" for the hipo which had <200 hp to the wheels. Something to think about, especially if you ever need to punch it to get out of the way of traffic. I know the "common wisdom" is the 8" will handle up to 400 hp. I'm just pointing out that Ford didn't think so.....
Thread Starter
Mach I Section Moderator
Joined: Mar 2007
Posts: 7,140
From: round abouts these parts
lol only 400hp....thats not right i got a buddy that works in a muscle car shop and they put 8"in 1000-1300 hp cars. IM thinking once i get up about 1k-1.2k more im gonna take it to him and he said he could convert to 5lug and get me an 8-9" rear for that much and that the labor price included.
should i go that route?
should i go that route?
Thread Starter
Mach I Section Moderator
Joined: Mar 2007
Posts: 7,140
From: round abouts these parts
well....you want me to get pics and a dyno result i can. but yes i want a 9in so i dont have to worry about it, but im not worried about that right now i just need to know can the 7.5 hold up under some strain?
ORIGINAL: USMCrebel
lol only 400hp....thats not right i got a buddy that works in a muscle car shop and they put 8"in 1000-1300 hp cars. IM thinking once i get up about 1k-1.2k more im gonna take it to him and he said he could convert to 5lug and get me an 8-9" rear for that much and that the labor price included.
should i go that route?
lol only 400hp....thats not right i got a buddy that works in a muscle car shop and they put 8"in 1000-1300 hp cars. IM thinking once i get up about 1k-1.2k more im gonna take it to him and he said he could convert to 5lug and get me an 8-9" rear for that much and that the labor price included.
should i go that route?


