Author Topic: 73 GB5 Cuda Restoration  (Read 28928 times)

Offline rhamson

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Re: 73 GB5 Cuda Restoration
« Reply #90 on: October 07, 2016 - 03:22:30 PM »
From the factory ALL 1970-74 E Body's with disc brakes had the caliper hanging off the front.

I called Wilwood on this a while back and they said, back or front, it didn't really matter :pullinghair:
I plan on using the Wilwood system when I get to the brakes. Do the Wilwood calipers hang off the front or the back? :clueless:




Offline Surfmichaels

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Re: 73 GB5 Cuda Restoration
« Reply #91 on: October 07, 2016 - 03:25:45 PM »
I think you can do either, some brakes may be designed specifically for one way or the other but I think we've learned that the spindle itself does not care or interfere.


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Offline 7212Mopar

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Re: 73 GB5 Cuda Restoration
« Reply #92 on: October 07, 2016 - 03:32:39 PM »
I got my new road racing brake kit last night. Dick from firm feel turned me onto a provider call all time racing. Turns out he lives one town over from me and runs his cuda and dart in vintage track events. The spindle is turned around for this kit, which also allows you to run a cooling kit. The kits even fits 15s

so I have a good amount of clearance with my 16s....






Hi, are you running 73 stock spindles? Are those 12" or 13" rotors? The calibers look awesome. Do you mind letting us know if they have a website?
1973 Challenger Rallye, AT with 1971 340
2012 Challenger SRT8 392 YJ,  6 spd

Offline Surfmichaels

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73 GB5 Cuda Restoration
« Reply #93 on: October 07, 2016 - 04:33:27 PM »
Hi, are you running 73 stock spindles? Are those 12" or 13" rotors? The calibers look awesome. Do you mind letting us know if they have a website?

Stock 73 spindles, a little beefier than the pre 73 ive been told,

I'll measure the rotors when I get them back. The hubs were dropped off at the machine shop this morning b/c my 3 inch wheel studs aren't perfectly straight and rubbed the hat a bit. If anyone is going to willow for fall fling I think he will be running in his cuda..    alltimeracing.com

Edit: rotors are 11 5/8 ...
« Last Edit: October 07, 2016 - 08:28:34 PM by Surfmichaels »

Offline alltime

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Re: 73 GB5 Cuda Restoration
« Reply #94 on: October 08, 2016 - 02:01:17 AM »
Rotors are 11.75x1.25

Offline alltime

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Re: 73 GB5 Cuda Restoration
« Reply #95 on: October 08, 2016 - 02:14:33 AM »
Cop car rotor compared to Alltime rotor. New rotor is made in USA. Consistent casting , so no pulsating at race temps from inconsistent casting like off shore rotors. Also rotors are heat cycled already. Hats are forged AL , not cast.

Offline alltime

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Re: 73 GB5 Cuda Restoration
« Reply #96 on: October 08, 2016 - 02:37:15 AM »
This caliper uses 2 steel bridges that lock into each side. Steel is much stronger under high temps. Aluminum looses half its strength at about 350*F. Very little pad taper or brake fade compared to Wilwoods or OEM style calipers. OEM or floating type calipers dont release as efficiently as a fixed caliper. Many of the aftermarket calipers are copies of 1960's-70's designs which are outdated. This caliper was designed by someone who was involved in racing from the 1960's to present, including the Hurst/Airhart calipers used on the Trans Cudas and Challenger. Those calipers are outdated compared to these. Although there are plenty of cast calipers that are as bad or even worse than those Trans-Am Hurst/Airhart calipers.  Do your own homework. Most people dont road race or do track days and OEM disc brakes are fine for them.

Offline alltime

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Re: 73 GB5 Cuda Restoration
« Reply #97 on: October 08, 2016 - 02:44:58 AM »
Feel free to join Chris and I at VARA's Big Bire Bash. I will be running my Cuda in the Saturday feature race, November 5th at Willow Springs.

Offline 1 Wild R/T

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Re: 73 GB5 Cuda Restoration
« Reply #98 on: October 08, 2016 - 11:03:39 AM »
Going back to caliper mounting... Front or back does't matter, the spindles are symmetrical but the thing to pay attention to is brake line routing.. Originally engineers try to have the brake line cross the steering axis because doing so cancels the steerings tendency to stretch the brake hose....  If you don't cross the axis the caliper moves toward & away from the mounting point on the frame causing the hose to flex in a tight U shape or stretch depending on which way you turn...  If you do cross the axis the hose just flexes....  Either way you still need to allow for suspension travel so in order to not over have an overly long hose it needs to cross the axis...

JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline usraptr

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Re: 73 GB5 Cuda Restoration
« Reply #99 on: October 08, 2016 - 09:27:52 PM »
Very nice progress!   :2thumbs:
1970 Plymouth 'Cuda.  Matching numbers 440 U Code, 4 speed pistol grip, Rallye dash, AM 8 Track, Shaker hood, 15 inch rallye wheels, Dana 60 4.10, Super Track Pak.  One of 134 - 440 "U" coupes codes built in 1970 and one of 100 - 440 Super Track Paks built in 1970.

Restoration pictures at:  http://spanks4thememory.smugmug.com/Cars/70-Cuda/7240639_M24oi#465274575_2MBqW
(Edited 8-1-17)

"usraptr" = United States raptor - bird of prey = United States Bald Eagle.  FYI, somebody else thought of it first so I had to drop the "O" in raptor.

Offline Surfmichaels

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Re: 73 GB5 Cuda Restoration
« Reply #100 on: October 10, 2016 - 11:51:57 PM »
Taking a small break from the brakes while I wait for bearing grease to get here.. Test fit my race seat, sits so low but luckily as I bring the seat forward the height comes up ... Need to buy some spacers so the seat doesn't drag on the sliders... Pretty hard to slot in and out, hopefully it's easier when everything is bolted down....




Offline EB3-GranCoupe

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Re: 73 GB5 Cuda Restoration
« Reply #101 on: October 11, 2016 - 10:25:28 PM »
 :thumbsup:

Offline Surfmichaels

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Re: 73 GB5 Cuda Restoration
« Reply #102 on: October 26, 2016 - 10:55:25 PM »
New torsion bars..   Firm Feel 1.18, quite a visual difference!


Offline Surfmichaels

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Re: 73 GB5 Cuda Restoration
« Reply #103 on: October 27, 2016 - 08:35:35 PM »
Tires mounted, Toyo 255/50 r16 on all four corners. Almost ready to hit the ground again!


Offline usraptr

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Re: 73 GB5 Cuda Restoration
« Reply #104 on: October 30, 2016 - 12:58:04 PM »
New torsion bars..   Firm Feel 1.18, quite a visual difference!




Those look great!  Think I may have to invest in a set of those also!  :2thumbs:
1970 Plymouth 'Cuda.  Matching numbers 440 U Code, 4 speed pistol grip, Rallye dash, AM 8 Track, Shaker hood, 15 inch rallye wheels, Dana 60 4.10, Super Track Pak.  One of 134 - 440 "U" coupes codes built in 1970 and one of 100 - 440 Super Track Paks built in 1970.

Restoration pictures at:  http://spanks4thememory.smugmug.com/Cars/70-Cuda/7240639_M24oi#465274575_2MBqW
(Edited 8-1-17)

"usraptr" = United States raptor - bird of prey = United States Bald Eagle.  FYI, somebody else thought of it first so I had to drop the "O" in raptor.