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#721690 - March 24th 2017 11:30 pm Drum to Disc conversion  
Joined: Jan 2016
Posts: 110
kane Offline
kane  Offline

Joined: Jan 2016
Posts: 110
houma, louisiana
Anyone done it to the rear? I know it's a long shot getting a response, but I figured I'd try lol
I'm gonna do it if I can find a vendor. Anyone know the differential identification for a 1994 chevy G20 sportvan 5.7L v8? Summit claim they have a kit but I need more details.

[Linked Image]
#721705 - March 25th 2017 1:56 am Re: Drum to Disc conversion [Re: kane]  
Joined: Jul 2014
Posts: 853
Rusty_Pancelode Offline
old hand
Rusty_Pancelode  Offline
old hand

Joined: Jul 2014
Posts: 853
Texas, under the A/C
Never done that conversion, but I'm interested to know what conversion kit it takes, as so much of our stock brake parts are 1/2 ton truck parts.
(I had to get a lug stud recently and all the parts store "techs" were stumped at how a 3/4 ton van had 1/2 ton parts. LOL

If I remember correctly, the GM differentials are referred to by how many bolts are in the diff cover. (i.e. 10 bolt, 12 bolt, 14 bolt)
So you should be able to just look under your van and count the cover bolts.

[Linked Image]
#721729 - March 25th 2017 8:33 pm Re: Drum to Disc conversion [Re: kane]  
Joined: Mar 2016
Posts: 165
Hasan Ben Sobar Offline
Hasan Ben Sobar  Offline

Joined: Mar 2016
Posts: 165
Completely point-less. Drums are actually more efficient than disc. Until you get them hot. So un-less you're tracking the van-don't bother.

Tucson-it's a dry an oven
#721737 - March 25th 2017 11:50 pm Re: Drum to Disc conversion [Re: kane]  
Joined: Sep 2005
Posts: 8,012
CatFish Offline
carpal tunnel
CatFish  Offline
carpal tunnel

Joined: Sep 2005
Posts: 8,012
Georgia, USA
The differential identification for a 1994 Chevy G20 sportvan 5.7L v8 is that sideways axle looking thingy under the back that has wheels on both sides. Look underneath, you can't miss it.

If I wanted to know if the Summit kit would fit and they couldn't tell me.........I'd start by comparing part numbers between the seals, bearings, backing plates, brake drums, etc on the GM model that Summit tells me the kit fits and the van I was gonna put it on.

I wish I had more advice.....

#721748 - March 26th 2017 12:48 pm Re: Drum to Disc conversion [Re: kane]  
Joined: Mar 2011
Posts: 239
jcd74 Offline
jcd74  Offline

Joined: Mar 2011
Posts: 239
Figure out how much you want to spend. As mentioned above look at your cover 10 or 12 bolt? Look at your axle bearing flange, note the shape and the number of bolts and measure their spacing. Measure your axle offset, the distance from the end of the axle bearing flange to the face of the axle flange. Go to Wilwood and look at brakes by axle flange, pic C-10 and any kit. Study all the pictures, note the offset drawing. When you get all those numbers right them down and measure your rims, how much brake can you fit in them. One thing to note is something changed in '83-'84 not all kits fit later years. Try looking at kits on speedway, they have a'lot of kits around 400, using stock parts.

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