Although my '56 210 is running and driving perfectly fine, I just can't leave well enough alone. I will be swapping in a better engine/trans combo that I have to replace the tired 307. While it's apart I will detail the engine compartment and clean up a few things that just flat bug me. Number one is the gargantuan CPP power brake system and the crappy way the lines run. Most of my cars that had disc brake conversions were non-power, only my F100 has a booster. I want to redo the '56 with a non power disc drum system. So I looked around on here (and a couple other sites) looking for a simple adapter to bolt a 2-bolt dual master cylinder to the Chevy 4-bolt firewall mount. One answer I saw; no adapter needed. Just bolt the new M/C to two of the existing studs. Anyone here upgraded to a dual M/C without power brakes? What size M/C is best? Thanks in advance.
I put a stocker on my 55, with Wilwood discs up front. It won't work, right? Been driving it that way for 4 years.(I removed the internal residual pressure valve) Before that, I had a normal 1970s style dual iron Chevy mc on it, no adapter. Keep the bore size relatively small (1" max)
You'll have to make a small sheet metal plate to cover the "hole" the new master cylinder won't completely cover. I'm really old school, more so than Squirrel, and I have yet to have a 56 Chevrolet with anything other than the stock drum brakes, though in top notch condition (I'm on my TENTH 56 Chevrolet). That includes a couple of Bracket Cars running 1/4 mile only. I have had an OT car with disc front/drum rear that did not have a booster, and never had any problem because of it. The diameter of your booster does't look that big; I think the design just makes it look so. I see a single plane intake manifold, so I'm wondering about the possibility of too radical of a cam for adequate vacuum to the booster? You may need a reservoir to store vacuum for the booster. What steering box are you using? Another HAMBER was looking for a 605 setup, and I think he was in Cali. I am Butch/56sedandelivery.
Really Jim? That stock single unit? Hey I guess if it works, it works. Why not? Butch, you're right about the design - they have that stand-off bracket between the firewall and the booster that makes the whole thing that much more intrusive. I'm not having any trouble with the current set-up at all - it stops OK and the pedal feels pretty good. I just hate having that junk in the way when I'm trying to work on the engine, especially if it isn't absolutely necessary. You should try getting your hands in there to change the spark plugs the way it is now. Funny you should mention bracket racing, 'cause that's what I am shooting for with the new engine/trans combo, actually the Wednesday night street legal drags at Sacto Raceway. I also want to make the engine easier to service and tinker with. It has the CPP power steering box and installation kit in it as well. It steers nice, but when they aligned it I forgot to tell them it has the upper a-arms with extra caster built in, so it needs to go back. I think I will keep the box but switch to a different (smaller) P.S. pump of some kind. Any suggestions?, I've used a Cavalier pump successfully in the past. Oh yeah, I figured out that this is my sixth '56 Chevy..... and this one will be the best I hope.
several places sell the non power master cylinder, as far as i know they all get them from cpp. you can get one from a parts store by asking for a vette or monte without power brakes....if you have the patients for it that is. lol whitey
Because 1967 DOT Law does not apply. But I understand your concern. With that said. A single circuit applies pressure the same as a dual circuit. The physic's are the same. "All bird's are just a bird when you stop and think about it." Richard Feynman
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