[floffy]

What is the best front and rear big brake upgrade you can do for a 72 formula with rear parking brake.
I like to hear the pro's and con's from the sets
Front 17 inch rims rear 18 inch and if possible for a decent amount of money.
Thanks,
Daan

[jwcfbd]

I put Wilwoods on my 67 and they have been great. I did have a number of issues during the install but nothing to bad.
http://forums.maxperformanceinc.com/...d.php?t=512542

[Scarebird]

We make a nice drum-in-hat rear, goes well with the 1LE fronts.



Uses a better caliper than the S10/LS1 rear too.

[floffy]

Scarebird,
I updated my 10 bolt with moser 7900 big ford bearing ends and 30 spline axles.
Will your kit wotk with those upgrades too?

[HWYSTR455]

The best is to use the AFX spindle and a C5/C6 brake kit. Choose a brake setup that has a bracket that fits your rear housing so you have a matching set. Wilwood has the most available options for rear brake setups, but there are others.

.

[Scarebird]

Originally Posted by floffy

Scarebird,
I updated my 10 bolt with moser 7900 big ford bearing ends and 30 spline axles.
Will your kit wotk with those upgrades too?

probably not.

[pro-tour79]

Originally Posted by HWYSTR455

The best is to use the AFX spindle and a C5/C6 brake kit. Choose a brake setup that has a bracket that fits your rear housing so you have a matching set. Wilwood has the most available options for rear brake setups, but there are others.

.

That afx requires new control arms as well because the spindle has a different KIA, you will be in it $$$$$$$$$$$$$$$
Better off with a nice 13" front kit and a D154 or Dyna lite rear kit since you have the ford bearing

[HWYSTR455]

Originally Posted by pro-tour79

That afx requires new control arms as well because the spindle has a different KIA, you will be in it $$$$$$$$$$$$$$$
Better off with a nice 13" front kit and a D154 or Dyna lite rear kit since you have the ford bearing

The question was what the 'best' is, and that no question is the best, no cost consideration. I've seen that setup out perform full custom chassis cars. (and it's less than that config)

But you are correct, the more affordable approach, if braking is the key upgrade you're trying to obtain, would be to use a 13" setup.

IF, you DO upgrade the brakes, and use the OE control arms, those things will flex like heck. They flex with the OE brakes and skinny rubber. I would strongly recommend the aftermarket control arm upgrade even before a brake upgrade.

I'm sure you will agree, with a decent brake upgrade, cowl deflection is also a concern, so the braces would be a good idea too.

.

[floffy]

Can you explain to me what " cowl deflection " means?
I'll probably go for the wilwood dynalite billet 4 piston callipers and 12.19 rotors front and rear, would that be a good choise?

[HWYSTR455]

Originally Posted by floffy

Can you explain to me what " cowl deflection " means?
I'll probably go for the wilwood dynalite billet 4 piston callipers and 12.19 rotors front and rear, would that be a good choise?

On a uni-body car, the cowl is a structural support, and the front frame section attaches to it. Under hard braking, the front frame rails want to push up and back, towards the cowl, and this causes that cowl 'box' area to distort. Best I can describe it. But you can review simple structural design and chassis books, which should give you a more clear picture.

The Herb Adams handbook is a great starting point for anyone who wants to build a 2nd gen for performance handling.

There are braces, sometimes called 'G' braces, that create a triangular framing, from the cowl to the front upper control arm mount point, which drastically reduces cowl deflection. Herb Adams made them in the 70s, and Pro-Touring F-Body makes some these days. Believe others make them too.

Here's a thread on Pro-Touring.com that might be of some interest:

http://www.pro-touring.com/threads/1...or-extreme-use

That's a fairly new thread, search there, and you will find a bunch of other mods and discussions regarding 2nd gen frames, suspensions, etc.

.

[SMW]

Ram Air Restorations has a better design for the Y-bar where it attaches to the cowl.

[lfdsteve]

Originally Posted by Scarebird

We make a nice drum-in-hat rear, goes well with the 1LE fronts.



Uses a better caliper than the S10/LS1 rear too.

Do you make a kit that converts my 71 with 78ish rear discs to the better drum in hat parking setup. The stock rear caliper/parking brake setup sux.
tnx

[Scarebird]

Yes, it will work - even better with the stock disc axles.

[pro-tour79]

Originally Posted by SMW

Ram Air Restorations has a better design for the Y-bar where it attaches to the cowl.

LOL who do you think makes those, so they are not a better design they are the exact same!

[pro-tour79]

Originally Posted by floffy

Can you explain to me what " cowl deflection " means?
I'll probably go for the wilwood dynalite billet 4 piston callipers and 12.19 rotors front and rear, would that be a good choise?

for the front these are a waste of time, don't focus on the number of pistons and rotor diameter, do the math look at the total size of the piston area and also the thickness of the rotor
Stock single large piston calipers have more clamping force than the Dynalites (you only count 2 of the 4 pistons as they have an opposite force )
Your stock rotor is 1" thick, the Dynalite kit uses an .810 thick rotor.

Dynalites in the rear are fine as long as you don't have C-clips anymore.