Greg I see Wilwood recalled their 7/8yths bore MC. I think I am done with Wilwood do you have a suggestion with another MC? Thanks

I am going to guess the issue is the bore, not the fact it is Wilwood. This is not voodoo. You can calculate your bore. Details in this thread:

http://www.pro-touring.com/threads/1...Tobin-of-KORE3

Caliper specs are here:

http://lukeskaff.com/projects/car/th...-measurements/

Don

Yes they did --- certain codes on them --- not every one they ever built - but close! Had one on the Mustang track car!

Baer makes a real trick looking billet model.... if you're looking for "fancy" under the hood.... and I used a Tilton in the '33 (although it was dual singles with a balance bar).... AP Racing also has MANY styles of M/C and all kinds of mount options.


http://baer.com/Remaster.html


http://tiltonracing.com/product-cate...ter-cylinders/


https://www.apracing.com/products/ra...ted_types.aspx

TOTALLY AGREE!!


Lots of people get the bore, and or, pedal ratio wrong..... using a power brake pedal ratio on a manual master cylinder is a very common "mistake". But so too, is the wrong bore diameter.

The std bore on a regular MC for the 71 corvette was 1 inch. I spoke with Wilwood many many times before going with 15/16ths since I had C-4 calibers and they used a 3/4 bore. The ratio is just shy of 6:1. I took it up to 45mph today, it stops but the brakes do not lock and its all pedal. Need to have good brakes before letting her loose, but the LS-3 427 is going to be sweet. This is crazy, I never had an issue before on my other builds. Thanks

Interesting info I will peel it back but it showed a bore of 1.25 front and 1 inch rear. So if mine is 15/16 assuming it is not enough would that be a possible issue? Soft pedal not enough fluid going to the calibers?

Do the math.... :)

Don

I think you are confusing caliper bore with master cylinder bore. You use your caliper bore and pedal ratio etc to calculate the required master cylinder bore.

Don

I was referring to the thread for MC which had a larger bore. Going through the thread for the math formula. Thanks

THere is also a BEDDING procedure with brand new rotors and pads.....