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-   -   SUM-760197 four wheel drum brake power conversion (https://67-72chevytrucks.com/vboard/showthread.php?t=847894)

yernkie 10-07-2023 12:12 AM

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?

Rust_never_sleeps 10-07-2023 01:29 AM

Re: SUM-760197 four wheel drum brake power conversion
 
If you're staying with drums all around, you don't need a combo valve.

68 P.O.S. 10-07-2023 12:51 PM

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?

yernkie 10-07-2023 02:29 PM

Re: SUM-760197 four wheel drum brake power conversion
 
Quote:

Originally Posted by 68 P.O.S. (Post 9248395)
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.


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