can drums be used on 7.25 to 8.75?

[74slnt6]

Can you use the drums off of a 7.25 and put them on a 8.75? Im putting a RB 440 in my duster and im gonna shorten a 8.75 out of a RR and will I be able to use 7.25 drums on the 8.75? Thanks a lot!

 

[74slnt6]

what about the backing plate too? thanks a lot

 

[65barracudadude]

No, I do not believe so.

 

[doug 371]

is that from a big bolt 7.25 or small bolt pattern 7.25? big bolt yes...small bolt no...

 

[65barracudadude]

Really, you can use large bolt pattern 7 1/4 backing plates and drums on an 8 3/4?????

 

[scoot439]

I'm thinking if you're going through all the hassle to put an RB in a former /6 A-body, (I'm guessing) you may want to reconsider and go find a set of brakes off the rear of a C-body with at least 10" X 2" shoes.
DON'T CHEAP OUT ON THE BRAKES!!

I'm sure the guy in front of you will thank you.

 

[george]

I agree. A good rb-motor will get you in over your head pdq. I remember years ago, I built a 383 for a buddies '67 sattelite. Lightly ported 906's, flat-tops .020 out, 509, street dominator and a 800 dp, backed with an 11" converter & 3.91s, ran high 12s. Car had the manual 10" drums on it. A mutual friend who restored Corvettes for a living was driving it, and I had kinda warned him that it pulled harder & stopped slower than what he was used to. So he is driving it on this semi-rural back-road with a 4-way stop about 1600' feet away. He punches it from a slow roll, goes into second and third @ about 6300 rpm, winds it up to about 5000 rpm in drive & starts braking for the 4-way stop. Im in the passenger seat thinking, "hes going WAY faster than he realizes". Blew the four-way stop hard on the brakes at about 50 mph in a cloud of dust & flying leaves, with a distinct look of panic on his face. It was a pretty quiet area, & I had pretty big huevos in those days, so I was laughing, but he was shook. Afterwards, he said, "well, it sure goes, but it sure dont stop!.