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#1
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What booster/MC combo for disc/disc for 1974 T/A
Hello everyone,
I have not posted for a while. I am finally getting around to giving my T/A some needed attention. One of the things I want to address/upgrade is the brakes. The rear drums needed to be addressed, so did the booster/master. I always wanted to upgrade to rear discs and eventually go the C5/C6 fronts, so this was my chance to start. I was set on the Right Stuff booster/master cylinder for disc/disc, but they are out until August. So my search led me to two other options: GM Restoration Parts unit for $255: https://www.firebirdcentral.com/70_8..._p/brc-371.htm and the Detroit Speed unit for over double the price at $525: https://www.detroitspeed.com/braking...irebird-050106 I do not want the chrome units flooding the market, nor am I building a pro touring car to convert to an aftermarket manual system. Will the GM Resto unit do the job of working with the future C5/C6 setup? I would rather install that both for price and closer look to original than DSE. Are there other units out there I am missing? Like factory units from later cars? I have been looking online for a few days, and can't seem to find much more. The car is a 1974 Trans Am. I've owned it for 30 years in mostly stock form. It's time to upgrade the performance a bit. Thanks for any and all help.
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Panos Little Miss G Racing |
#2
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The DSE unit would be my choice. While I agree it's overpriced, there's some good stuff in their kit- notice the molded gasket to seal the firewall? This is something new to me- I've struggled with how to get a proper seal-- here's the answer.
Also notice the machined adapter for the brake clevis? That's a whole other level vs. the cheap, universal stuff with a coupling nut. The M/C they use is a quick take-up design. The rear port is the front brakes, and vice-versa. I don't know what part number they are using, so there's that advantage too. Now, there are options- I used a Tuff Stuff 2229NC. It's a 9" dual diaphragm booster. https://www.summitracing.com/parts/tff-2224nc Then use the reduced angle brackets from DSE- Looks like Summit isn't carrying them anymore... https://www.detroitspeed.com/brake-b...irebird-050302 Brake pedal clevis kit- https://www.amazon.com/Tuff-Stuff-47.../dp/B003N8OQFQ Then you'll need an aluminum late model GM M/C- I used one from an S10, but it looks like it's been D/C'd. Probably somewhere around $100... This is their old kit's recipe, but DSE upgrades stuff a lot, so some of this has changed... still, it'll get you where you wanna be for a home-brewed setup.
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John IG: @crawdaddycustoms YouTube: https://www.youtube.com/channel/UCK9...Nc_lk1Q/videos |
#3
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Thanks for the information John.
I'll look closer at the DSE and the other setup you mentioned.
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Panos Little Miss G Racing |
#4
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I use the aluminum M/C off a 1981 Trans Am. Last one I bought was from O'reilly's. It was new.
The front discs (12 inch) I use is off a third gen T/A. I use the S10 for the rear discs (11.5 inch).
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1978 Black & Gold T/A [complete 70 Ram Air III (carb to pan) PQ and 12 bolt], fully loaded, deluxe, WS6, T-Top car - 1972 Formula 455HO Ram Air numbers matching Julep Green - 1971 T/A 455, 320 CFM Eheads, RP cam, Doug's headers, Fuel injection, TKX 5 Spd. 12 Bolt 3.73, 4 wheel disc. All A/C cars |
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