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Author Topic:   GM brakes on a ford 9 inch
SBS
Dirt Roller

Total posts: 13
posted October 04, 2005 08:23 AM  
OK... I have a stock rearend for my monte carlo. It has recently been overhauled for the brakes... new pistons, pads, springs, etc.

I'm upgrading to a ford 9 inch. I'm going to stick with drum brakes in the rear. The housings I'm looking at purchasing don't come with brake assemblies.

Would the GM brakes fit onto the 9 inch housing? From looking into brake options, I see that some say "available in ford or GM bolt patterns." Does that mean that I can put the GM rear drum brake assembly on the ford 9 inch if I drill holes for the new bolt pattern?

Thanks!

sc1 racing
Dirt Freak

Total posts: 419
posted October 04, 2005 09:55 AM  
if you are investing that much money for the 9inch i would ditch the drums and go with disc. the price is well worth it. better corner entry. safer and faster stoping, no worry about broke/weak springs, or adjustment, and quicker and easier to replace.

but back to your question they will work. you will need to center your backing plate. enlarge holes, and most ford axles are to big for drum to slide onto so you will need to enlarge the through hole for the axle end on drum.

SBS
Dirt Roller

Total posts: 13
posted October 04, 2005 10:59 AM  
I just found a ford 9 inch locally for $150...

What do you guys think would be cheaper?

Buy the Ford 9 inch locally for $150 and have the tabs welded on to make it fit a Metric plus whatever bearings or seals are needed. Then have new gears put into the pumpkin.

Buy the QuickPerformance setup for $715... the QP setup doesn't come with a pumpkin so I'd have to buy that also.

Do you guys typically overhaul an old 9 inch or buy a new one?

Thanks!

md3 Racing
Dirt Full Roller

Total posts: 32
posted October 04, 2005 01:50 PM  
i run a 9" from a 79 thunder bird
you will have a lot less invested going with the used end result will be the same check topics "help needed replacing drum with disk "and " Brake rotors for 9" rear with metric calipers" for more helpfull instructions im currently putting disc on my 9"

sc1 racing
Dirt Freak

Total posts: 419
posted October 04, 2005 03:44 PM  
you can get a complete disk brake set up for 299.00 from speedway. comes with everything but a welder and brake fluid..

Donald g man
Dirt Roller

Total posts: 14
posted October 09, 2005 03:45 PM  
Yes when Quickperf. sends you a 9" with provisions for gm brakes you can mount your brakes up to the axle housing if you tell them which brakes you have. Their backing plate is cut off at the bottom to give you access to the adjusters without poking thru a hole in the backing plate. The bearings that came with the unit are sealed roller ball, that you can get at NAPA, $25, not taper bearings. You will have to size a seal to fit the axle and housing. QP states the roller style helps prevent axle damage when stressed on impact. Five bearings later, two wall impacts, and three side hits, we still have the Moser axles from two years ago. Worth the extra bucks I think.

    

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