Brakes 66 chevy truck - The 1947 - Present Chevrolet & GMC Truck Message Board Network

quickchevy · 12-11-2008, 11:07 PM

Changing to front disk 5 on 4 3/4.Want to change rear to 5 on 4 3/4 i know i need to change axles.Drums of from year etc.

70 Suburban · 12-11-2008, 11:19 PM

a car

**Captainfab** · 12-11-2008, 11:23 PM

If you were going with 5 on 5 it would have been easy. Since 5 on 4 3/4 is a passenger car bolt pattern, you'll need to look at drums for a Camaro, Chevelle, Impala, etc. The issue you may run into is finding a drum that will match up to your backing plate. You might be better off to just swap the whole differential.

quickchevy · 12-12-2008, 04:43 AM

Thanks

vin63 · 12-12-2008, 09:19 AM

As the others mentioned, the drum brakes make it a bit difficult to change the lug pattern on the rearend. I have a passenger car 10-bolt rear end (5 on 4.75) available that will need rebuilding - it's free, just cover shipping. That might be an easy way to solve the rearend lug pattern issue. PM me if you're interested.

As far as the front goes, I had to re-drill my rotors for the 5 on 4.75 pattern (see photo below).

66chevy PROSTREET · 12-12-2008, 12:02 PM

80's camaro will work

Tomsriv · 12-13-2008, 12:07 AM

Quote:

Originally Posted by 66chevy PROSTREET

80's camaro will work

Didn't those come with a 7.5 or 8.2 10 bolt rear end? Just go easy on it.

**Captainfab** · 12-13-2008, 02:13 AM

Quote:

Originally Posted by Tomsriv

Didn't those come with a 7.5 or 8.2 10 bolt rear end? Just go easy on it.

They are either 7.5 or 7.625.....not the best diff IMO. Depends on how much HP or TQ you have. It would work if you don't hammer on it much. A better choice would be of course a 12 bolt or a 8.5 10 bolt.

502tripower · 12-13-2008, 02:11 AM

Quote:

Originally Posted by vin63

As the others mentioned, the drum brakes make it a bit difficult to change the lug pattern on the rearend. I have a passenger car 10-bolt rear end (5 on 4.75) available that will need rebuilding - it's free, just cover shipping. That might be an easy way to solve the rearend lug pattern issue. PM me if you're interested.

As far as the front goes, I had to re-drill my rotors for the 5 on 4.75 pattern (see photo below).

Is redrilling the front rotors the only option for switching to 5 on 4.75 and if so what rotors would be best to do? I looked a redrilling the factory rotors but got scared as it looked like it would compromise the integrity of the cast rotor.

vin63 · 12-15-2008, 09:49 AM

Quote:

Originally Posted by 502tripower

Is redrilling the front rotors the only option for switching to 5 on 4.75 and if so what rotors would be best to do? I looked a redrilling the factory rotors but got scared as it looked like it would compromise the integrity of the cast rotor.

I've had to re-drill countless wheels and rotors for other lug patterns for many years, and I've never had any issues. Many of the drag racers used to drill the magnesium wheels with three different lug patterns in the 60s and 70s with no problems. I figure the rotors are a lot more substantial.

The only other option that I could figure was going with passenger car components, and I did not want to go with lighter weight stuff.

70 Suburban · 12-12-2008, 12:12 PM

late 80s and you can have rear disk

quickchevy · 12-13-2008, 08:45 AM

Well the main reason i wanted to change the rear to 5 on 4 3/4 is the rims i want to put on the truck.There are the Billetspecialties street light.They only make the 5 on 5 size 15 by 14 and up.I know where i can get some axles that are drilled for 5 on 5 and 5 on 4 3/4.I did not want to put that wide of a rim on back.

12-11-2008, 11:07 PM	#1
quickchevy Registered User Join Date: Apr 2008 Location: Augusta,Ga Posts: 119	Brakes 66 chevy truck Changing to front disk 5 on 4 3/4.Want to change rear to 5 on 4 3/4 i know i need to change axles.Drums of from year etc.

12-11-2008, 11:19 PM	#2
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Brakes 66 chevy truck a car

12-11-2008, 11:23 PM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Brakes 66 chevy truck If you were going with 5 on 5 it would have been easy. Since 5 on 4 3/4 is a passenger car bolt pattern, you'll need to look at drums for a Camaro, Chevelle, Impala, etc. The issue you may run into is finding a drum that will match up to your backing plate. You might be better off to just swap the whole differential. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

12-12-2008, 04:43 AM	#4
quickchevy Registered User Join Date: Apr 2008 Location: Augusta,Ga Posts: 119	Re: Brakes 66 chevy truck Thanks

12-12-2008, 09:19 AM	#5
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,262	Re: Brakes 66 chevy truck As the others mentioned, the drum brakes make it a bit difficult to change the lug pattern on the rearend. I have a passenger car 10-bolt rear end (5 on 4.75) available that will need rebuilding - it's free, just cover shipping. That might be an easy way to solve the rearend lug pattern issue. PM me if you're interested. As far as the front goes, I had to re-drill my rotors for the 5 on 4.75 pattern (see photo below). __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

12-12-2008, 12:02 PM	#6
66chevy PROSTREET SOLD Join Date: Jul 2008 Location: Poorest state in America(Breaux Bridge,Louisiana) Posts: 370	Re: Brakes 66 chevy truck 80's camaro will work __________________ 1966 CHEVY FLEETSIDE SOLD 11-29-9 TRUCK THREAD- http://http://67-72chevytrucks.com/vboard/showthread.php?t=301368&page=2

12-12-2008, 12:12 PM	#11
70 Suburban Rods Join Date: Nov 2002 Location: Bryan, TX Posts: 1,398	Re: Brakes 66 chevy truck late 80s and you can have rear disk

12-13-2008, 08:45 AM	#12
quickchevy Registered User Join Date: Apr 2008 Location: Augusta,Ga Posts: 119	Re: Brakes 66 chevy truck Well the main reason i wanted to change the rear to 5 on 4 3/4 is the rims i want to put on the truck.There are the Billetspecialties street light.They only make the 5 on 5 size 15 by 14 and up.I know where i can get some axles that are drilled for 5 on 5 and 5 on 4 3/4.I did not want to put that wide of a rim on back.



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