69 Mustang. 427SOHC install. master cylinder mounting issue

wayne petty · May 23, 2021, 12:21:26 AM

a friend is building a 69 mustang.. already did the 429 BOSS shock towers.. got the motor in. part way thru a header build..

but the Brake master cylinder clearance is giving him issues..

you can see the issue here..

https://i.imgur.com/gWyCmLO.jpg

some images of the project here..

https://imgur.com/a/YTGkyGE

and .. yes. aluminum heads and another large aluminum piece the heads bolt to.. not shown. yet..

and i have been OK..

enjenjo · May 23, 2021, 12:39:12 AM

I used a S10 master cylinder on the last Mustang I did. It is about 1 1/2" shorter and bolts right up. It's the same bore. If you want I can look up the part number.

wayne petty · May 23, 2021, 12:45:49 AM

Quote from: "enjenjo"I used a S10 master cylinder on the last Mustang I did. It is about 1 1/2" shorter and bolts right up. It's the same bore. If you want I can look up the part number.

that would be great.. thanks.

enjenjo · May 23, 2021, 01:19:46 AM

Ok, I looked in my billing records, it's now stored on the cloud since it's been several years ago. I'll look it up in the morning.

kb426 · May 23, 2021, 10:08:05 AM

I am not jealous of that job.

An exercise in patience completely.

enjenjo · May 23, 2021, 10:04:28 PM

Well, it's not on the cloud either. Next step is to go to my supplier and see how far his records go back, because mine don't have the number, and NAPA has changed the number system

enjenjo · May 24, 2021, 09:35:28 AM

Okay the number that NAPA came up with is P2040. Application is 68 to 72 Buick Skylark with manual brakes among many others. No guarantee it will work for you, but it worked for me.

wayne petty · May 25, 2021, 04:09:08 PM

Quote from: "enjenjo"Okay the number that NAPA came up with is P2040. Application is 68 to 72 Buick Skylark with manual brakes among many others. No guarantee it will work for you, but it worked for me.

thank you.. i will pass that along to him.. he did find a company that creates a tapered spacer block to get the nose of the master upward..

wayne petty · June 25, 2021, 02:43:40 AM

just an update...

booster and master installed.. https://i.imgur.com/8EHQypb.jpg

a little offsetting of the mounting hole.. https://i.imgur.com/o7zDDRk.jpg

a tapered bracket.. https://i.imgur.com/D2CWnCe.jpg

a little stud work.. https://i.imgur.com/iTEixfc.jpg

thought some of you should know..

chimp koose · June 25, 2021, 09:14:33 AM

Hello Wayne nice to hear from you

idrivejunk · June 25, 2021, 04:02:43 PM

+ me on that.

Wayne that turned out slicker'n owl snot on a greased glass doorknob, I tell you whut.

Nice shoehorn job.

I've been dipped in that area before on the 70 Mach 1 job, just fitting a brake knob and header clearance on Z bar with headers on a 351 though. Not a happy place to access.

wayne petty · June 25, 2021, 05:43:11 PM

Quote from: "idrivejunk"+ me on that.

Wayne that turned out slicker'n owl snot on a greased glass doorknob, I tell you whut. Nice shoehorn job.

I've been dipped in that area before on the 70 Mach 1 job, just fitting a brake knob and header clearance on Z bar with headers on a 351 though. Not a happy place to access.

Dennis has been busy wedging stuff in his mustang. he is still building headers for it.. the aluminum heads have raised exhaust ports so it makes it tighter.. i think he has settled for Tri Y design instead of 4 equal or at equal as he can get primaries.

the clutch is going to be a McLeod concentric hydraulic slave and pedal linkage of so kind.. clutch master set up still in design ..