back brakes from a 76 fit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Brainchild · 12-02-2004, 02:12 AM

The rearend went out of dads 72 yesterday,and so he pulled the 3rd member from a 76,and bolted the ring gear up,and bolted it right in.Even has the same spline axels,and ect.
The back brakes are an inch maybe an inch and a half wider than the ones on the 72 though.Would they also fit,using the backing plates from the 76,or would I have to use the axels too?If I have to use the axels they may be too long which would make the whole deal not worth it for no more gain than I would get .
How much of a difference would there actually be,would it be worth it at all?

junkyardjohn · 12-02-2004, 02:35 AM

.. I PUT THE REAR BRAKE ASSY. INC. THE BACKING PLATE OFF OF A 75 TRUCK ON A 72 12 BOLT. IT WAS ABOUT 3/4 OR 1" WIDER SEEMS TO ME. IT'S A WORTH WILE UPDATE AS IT GIVES YOU A WHOLE LOT MORE SURFACE AREA ON THE REAR DRUMS.

JOHN

Brainchild · 12-02-2004, 02:46 AM

Did you use the axels from the 75,or the 72 when you swapped it out?

72402 · 12-02-2004, 10:59 AM

I believe the axles are the same length, the difference in the backing plates allows the use of the wider shoes.

junkyardjohn · 12-02-2004, 12:01 PM

Quote:

Originally Posted by Brainchild

Did you use the axels from the 75,or the 72 when you swapped it out?

BRAINCHILD .. THE ONLY THING I USED OFF THE 75 WAS THE BRAKE ASSY. FROM THE BACKING PLATES OUT TO & INCLUDING THE DRUMS.

JOHN

12-02-2004, 02:12 AM	#1
Brainchild Still drivin' a Rat Rod Join Date: Sep 2004 Location: Monett Missouri Posts: 4,925	back brakes from a 76 fit? The rearend went out of dads 72 yesterday,and so he pulled the 3rd member from a 76,and bolted the ring gear up,and bolted it right in.Even has the same spline axels,and ect. The back brakes are an inch maybe an inch and a half wider than the ones on the 72 though.Would they also fit,using the backing plates from the 76,or would I have to use the axels too?If I have to use the axels they may be too long which would make the whole deal not worth it for no more gain than I would get . How much of a difference would there actually be,would it be worth it at all? __________________ Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the a$# 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website

12-02-2004, 02:35 AM	#2
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	.. I PUT THE REAR BRAKE ASSY. INC. THE BACKING PLATE OFF OF A 75 TRUCK ON A 72 12 BOLT. IT WAS ABOUT 3/4 OR 1" WIDER SEEMS TO ME. IT'S A WORTH WILE UPDATE AS IT GIVES YOU A WHOLE LOT MORE SURFACE AREA ON THE REAR DRUMS. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

12-02-2004, 02:46 AM	#3
Brainchild Still drivin' a Rat Rod Join Date: Sep 2004 Location: Monett Missouri Posts: 4,925	Did you use the axels from the 75,or the 72 when you swapped it out? __________________ Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the a$# 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website

12-02-2004, 10:59 AM	#4
72402 Registered User Join Date: Nov 2004 Location: Cameron, Oklahoma Posts: 199	rear brakes I believe the axles are the same length, the difference in the backing plates allows the use of the wider shoes.

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