Trying to finish my 67 before the fourth. I ordered a booster and MC from JEGS. Supposed to be the right one for the 67. The mechanic is telling me the rod that goes into the MC is too long. Make a long story short, I ordered the complete setup from Matts Classic Bowties. It was listed as the right part for the Pontiac. The setup came and it has a metering block that the original setup didn't have. What is that for??? I have 4 wheel drums. Please let me know what you think! Thank you The link to the booster in question
http://www.mattsclassicbowties.com/index1.html

metering block is usually use with front disc brake and rear drums. it retard the front brake application to compensate for the rear spring extension so that front and rear will apply at the same time

Do you think the booster and MC would work without using the metering block or do you think there is a difference between them??

Time we introduce you to companies that DO NOT peddle Camaro only parts as Firebird parts:

Ames Performance Engineering
Performance Years

If I need to go to a "Chevy" place to find something that nobody else has - I go to Rick's Camaro's 1st as they specialize in 1st Gens' only.

No, they are different. You need to get the correct M/C.

Better Idea, keep the new ones and compliment them with a front disc upgrade! Don't forget new lines!

So you're staying with 4 drum brake? I take it all you want to do is add a booster to your 4 drum brakes. If that's the case, all you need is the booster; and to route the lines with the original MC forward. Be careful not to crimp the lines!

I did the booster upgrade to my cammer. The only items I needed were the shorter push rod, and a threaded hose barb (intake manifold) for the vac line.

The shorter push rod is 1.5 inches long... I think. Let me check for the old thread I started about this subject. If you can't find one, cut the one you have and round off the tip so it seats correctly. Also you have to move the clevis on the brake pedal to the lower hole if I'm not mistaken.

I couldn't find the thread, but I found something better...



It's 2 5/8".

Thanks for your help. I needed a new master also. In and now running or stopping I should say!!