The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-07-2023, 12:12 AM   #1
yernkie
Registered User
 
Join Date: Jan 2013
Location: Paola, KS
Posts: 20
SUM-760197 four wheel drum brake power conversion

Does anyone have any experience with the Summit SUM-760197 power brake conversion kit? I ordered one on Wed and it arrived today and I thought it came with a new proportioning valve but it did not. I called them and they said I needed the SUM-760186 valve so I placed another order. Tonight I found some install pics online and it looks like some guys are using the stock valve that came on the truck. So my three questions are:

1. Can I use the factory valve and just rebend the lines? Any pros/cons of doing that?

2. Any install tips or tricks? It looks pretty straightforward.

3. Has anyone installed this on an engine with a Rochester 2GV carb? Anything to look out for on the vacuum port or line?
yernkie is offline   Reply With Quote
Old 10-07-2023, 01:29 AM   #2
Rust_never_sleeps
Senior Member
 
Rust_never_sleeps's Avatar
 
Join Date: Jun 2022
Location: San Ramon,CA
Posts: 401
Re: SUM-760197 four wheel drum brake power conversion

If you're staying with drums all around, you don't need a combo valve.
Rust_never_sleeps is offline   Reply With Quote
Old 10-07-2023, 12:51 PM   #3
68 P.O.S.
Registered User
 
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,661
Re: SUM-760197 four wheel drum brake power conversion

Yes, I would use the factory distribution block for your drum brakes. However, if would have it rebuilt before using it. The combination valve Summit recommended is for disc/drum brakes, not for drum/drum brakes.

Is that kit intended to be used with 4 wheel drum brakes?
__________________
72 C10 lwb fleetside -stock 350/350 combo
68 P.O.S. is offline   Reply With Quote
Old 10-07-2023, 02:29 PM   #4
yernkie
Registered User
 
Join Date: Jan 2013
Location: Paola, KS
Posts: 20
Re: SUM-760197 four wheel drum brake power conversion

Quote:
Originally Posted by 68 P.O.S. View Post
Yes, I would use the factory distribution block for your drum brakes. However, if would have it rebuilt before using it. The combination valve Summit recommended is for disc/drum brakes, not for drum/drum brakes.

Is that kit intended to be used with 4 wheel drum brakes?
Yes, this was the four wheel drum kit which is probably why it didn't come with a new one. I'll try the factory block and ship back the other. Thanks everyone for the input.
yernkie is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:01 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com