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#1 |
American Woman!
Join Date: Jan 2005
Location: TN
Posts: 1,046
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Need help with disc brake set up...
I tried looking thru ALL the threads for this & I couldn't find what I needed. I guess if I really searched High & Low..I would have found it..
Are the axles & length & number of splines the same from the 5 lug to 6 lug on the 12 bolt rear? I am thinking about converting over my 6 lug to 5 lug, I know pretty much all what needs to be done, but needed to ask the above question...has anyone done it & if so, can ya put a link showing what ya did? Any help would be sooooo much appreciated! ![]() Tree |
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#2 |
Registered User
![]() Join Date: Dec 2004
Location: Gypsum Kansas 67448
Posts: 1,681
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i converted a 70 w/6 lug to a 72 5 lug a couple of yeras ago,and it worked out just right,i dont think you can swap out a 6 lug 4x4 rear w/ 5 lug,but i am pretty sure you can do a 2wd
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21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343 |
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#3 |
American Woman!
Join Date: Jan 2005
Location: TN
Posts: 1,046
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Yea they are both 2wd..I appreciate the response!
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#4 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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Depends on which width rear you have (on your truck). There was a mid year switch to a wider rear, if you have the wider one the 5 lug will go right in. The narrower one will need spacers. The other possibilities are an after market 5 lug axle or have yours filled and redrilled.
Check out this page for measurements: http://50chevy.freeservers.com/Suspension_Widths.html
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![]() ![]() 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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#5 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Spacers is not a good idea, the portion of the axle shaft that rides on the bearing is hardened...but the rest of the axle shaft isn't. I kn ow it's been done and stuff, but that's a lot of damage if an axle gives out...esp on the freeway.
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#6 |
American Woman!
Join Date: Jan 2005
Location: TN
Posts: 1,046
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The donor I am using (or will use) will be coming off a '69.
All I want to do is put disc brakes on the front...I have power drums brakes now on my '70...but would LOVE the disc up front. Is there any 6 lug trucks that have power brakes that everything will just tranfer onto my truck without any problems? ![]() |
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#7 |
Senior Member
![]() Join Date: Mar 2000
Location: Rockville,In. USA
Posts: 3,720
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1970 6lug rear axles are the same length as 1971 & 72 5lug rear axles so axles and drum brake drums can be swapped, 1969 and earlier rear axles are shorter by approx. 3/4" each and if you try to swap late model 71-72 axles into them they protrude a additional 3/4" further out so you can not do a direct swap on axles and drums only. Spline count on all 1967-72 1/2 ton 12 bolt rearends is the same.
GMCPaul |
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#8 |
Senior Member
![]() Join Date: Mar 2000
Location: Rockville,In. USA
Posts: 3,720
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You stated the donor truck is a 1969, in 1969 they had 6 lug front & rear and drum brakes front and rear so if your getting a 69 with disc brakes in front & 5 lug front & rear someone has then converted it to disc brakes & 5 lug. If thats the case you need to find out what year group parts were used to convert it.
GMCPaul |
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#9 | |
American Woman!
Join Date: Jan 2005
Location: TN
Posts: 1,046
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Quote:
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#10 |
Senior Member
![]() Join Date: Mar 2000
Location: Rockville,In. USA
Posts: 3,720
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The donor truck your speaking of if it has truck 5on5" bolt pattern with 1 1/4" thick rotors then you can use the standard 6 lug rotors ourselves and most other parts vendors carry to replace the current 5lug rotors on it to keep your 6 on 5.5" bolt pattern you currently have.
If you like the wheels better on the 69 and its got a 71-72 rearend under it then you can pull itsd rear axles and drums and swap with your 1970 axles. If its got a 73 up rear end the axle shafts are wrong length for the swap. GMCPaul |
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#11 |
Keepin an eye out
Join Date: Feb 2003
Location: So.Cal
Posts: 3,921
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Hang on JerseyGirl, im on my way to help
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1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351 |
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#12 |
Registered User
![]() Join Date: Dec 2004
Location: Gypsum Kansas 67448
Posts: 1,681
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they do make a 6 lug rotor for the front of that,try like manestruckparts.com they have the rotors for 100 bucks each i think,which isn't bad if you are really stuck on the 6 lug
__________________
21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343 |
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#13 |
"Trucks with Class"
![]() Join Date: Jul 2000
Location: OLYMPIA, WA, USA
Posts: 8,132
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The new 6-lug rotors onto a 5-lug spindle is a "bolt on".
I am sure Manestruck & others may have these, but I would recommend you contact GMC Paul first. He is on the board, giving lots of free information, has the parts in stock and I will bet his prices are better also. |
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#14 | |
American Woman!
Join Date: Jan 2005
Location: TN
Posts: 1,046
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Quote:
And thanks guys for the help. GMCPaul you are da man!!! Very helpful info..thanks soooooooooo much! ![]() |
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