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CPRstreetmachines 1969 Turbo'd Pro-Touring GT2 build

This is a discussion on CPRstreetmachines 1969 Turbo'd Pro-Touring GT2 build within the Classic Tech forums, part of the Classic Mustangs category; Not sure on the paint scheme. The owner had the rendition done. I'm just paying attention to the structural part ...

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  #26 (permalink)  
Old 06-20-08, 11:03 AM
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Not sure on the paint scheme. The owner had the rendition done. I'm just paying attention to the structural part of the drawing.
The exhaust is still going to go up and over the axle. We got some tricks though.
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  #27 (permalink)  
Old 06-21-08, 09:22 PM
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Quote:
Originally Posted by SNAKEPILOT View Post
Composite springs and staggered shocks - you won't need a torque arm.

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How much of a difference do the staggered shocks make? I have FAF's but I get axle tramp fairly badly compared to my old leaf + slapper bar setup.
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  #28 (permalink)  
Old 06-21-08, 10:01 PM
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GREAT looking concept! i love the colors and stance.
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  #29 (permalink)  
Old 06-21-08, 10:11 PM
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I have a 482 FE with a TKO600 and 3.50 rear. It puts a fair amount of torque to the rear wheels. I have zero wheel hop. When I had regular leafs and under ride "traction master" type bars, I had terrible wheel hop. I also have Shelby snubbers for my springs so that may have help eliminate wheel hop.

Last edited by SNAKEPILOT; 06-24-08 at 12:12 PM.
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  #30 (permalink)  
Old 06-21-08, 11:38 PM
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That set up should put out more than 700 rwtq. What ever the rear suspension is used, it won't have an easy job. Any leafspring set up will need help IMO.
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  #31 (permalink)  
Old 06-22-08, 04:52 AM
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Thats very weird. I have a 300+hp 302, tko600 and 3.5 rear with FAF's and bad wheel hop. The only thing I am missing is the shelby snubbers and the staggered shocks it seems. I wonder which of the two is doing more.

Did you always have the staggered shock setup? Do you think it makes much difference?
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  #32 (permalink)  
Old 06-22-08, 08:25 AM
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It's a real mild 482 so I can run power brakes and A/C. I am guessing 500hp/525tq.

67s didn't come with staggered shocks. I converted mine because of my previous wheel hop issues. Ford offered a drag-pack option on their 69-70 Mustangs that came with staggered shocks. They were also on GT-500KRs.
Likewise, the Shelby snubbers are supposed to preload the front half of the spring during hard acceleration to keep the springs from warping and initiating wheel hop.
I didn't want any wheel hop with the new motor so I took a three prong approach to eliminate it. Mono-leafs (Flex-a-Forms), staggered shocks, and Shelby snubbers. I am using Global West Delalum bushings too which may also help. I think when you get Cal-Tracs, they come with a solid front bushing to eliminate front eye movement that exacerbates wheel hop.

Last edited by SNAKEPILOT; 06-24-08 at 12:12 PM.
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  #33 (permalink)  
Old 06-23-08, 02:10 AM
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Quote:
Originally Posted by brianj5600 View Post
That set up should put out more than 700 rwtq. What ever the rear suspension is used, it won't have an easy job. Any leaf spring set up will need help IMO.
Indeed! The new tranny will take around 800 lb.ft. and that'll be the limiting factor. Engine is built to take more just in case we decide to up the boost later on. I wouldn't rely on just composite springs, the torque arm is a must and also contributes to a very solid road feel. Also with a composite you loose the ability to repack the leaf sets for different spring rates and ride heights.

Color scheme, try looking at the George Follmer 69 Trans Am Mustang and you'll see where the idea came from.
http://www.trans-amseries.com/Driver...ockMustang.htm
The originals rear paint scheme is odd, so we're trying different ideas with and without white divider, all green , all black etc.
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  #34 (permalink)  
Old 06-23-08, 11:19 AM
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Quote:
Originally Posted by DK832 View Post
Indeed! The new tranny will take around 800 lb.ft. and that'll be the limiting factor. Engine is built to take more just in case we decide to up the boost later on. I wouldn't rely on just composite springs, the torque arm is a must and also contributes to a very solid road feel. Also with a composite you loose the ability to repack the leaf sets for different spring rates and ride heights.
Yeah, it's rated at that in a 3800 lbs car. This will be lighter obviously, but I think with the gear ratio it'll have, it's going to offset the weight savings.

I wouldn't trust this to just staggered shocks either. They won't help plant the tires like a torque arm.
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  #35 (permalink)  
Old 06-24-08, 08:44 AM
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hey!

Quote:
Originally Posted by SNAKEPILOT View Post
I have a 482 FE with a TKO600 and 3.50 rear. It puts a fair amount of torque to the rear wheels. I have zero wheel hop. When I had regular leafs and under ride "traction master" type bars, I had terrible wheel hop. I also have Shelby snubbers for my springs so that may have help eliminate wheel hop.

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Click the image to open in full size.

what rear breakes are those?
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  #36 (permalink)  
Old 06-24-08, 08:54 AM
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Wilwood 12.2" two piece rotor and hub with integral parking brake.
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  #37 (permalink)  
Old 06-24-08, 11:20 AM
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Can we keep the questions to PM's fellas ? Already have 8 pics of a car that isn't the subject car.
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  #38 (permalink)  
Old 06-24-08, 12:18 PM
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My bad. I pulled the pics from my posts but can't do anything about the responses that quoted my pics.
Great project. Keep the updates coming.
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  #39 (permalink)  
Old 06-24-08, 12:26 PM
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Can we keep the questions to PM's fellas ? Already have 8 pics of a car that isn't the subject car.
just standard SN threadjacking....i don't see the problem really.
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  #40 (permalink)  
Old 06-25-08, 10:24 AM
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No hard feelings. It's it can get out of control pretty easy.
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  #41 (permalink)  
Old 06-25-08, 12:18 PM
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So has anyone seen the new hulk movie yet? And what's up with these gas prices?

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  #42 (permalink)  
Old 10-11-08, 11:27 AM
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progress pics for the ones following along

we need to start fresh and this 408 won't cut it...
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the AJEracing k-member kit allows us to notch a lot to make room for our big plans

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  #43 (permalink)  
Old 10-11-08, 11:30 AM
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Engine build in process

DART small block 363
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  #44 (permalink)  
Old 10-11-08, 12:42 PM
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looking good, keep the picture coming
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  #45 (permalink)  
Old 10-13-08, 11:26 AM
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that is gorgeous. the donor car's engine bay looks so good!
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  #46 (permalink)  
Old 10-13-08, 07:51 PM
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Sweet. It's going to be nice. Is this posted over on Welcome to Pro-Touring.com & G-Machines.com
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  #47 (permalink)  
Old 10-14-08, 02:35 AM
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  #48 (permalink)  
Old 10-29-08, 03:11 PM
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Need to make some corrections I left in. We decided on a Worlds block, even though I wrote in Dart at the top. And we went with a hyd cam. Didn't want ANY issues. talked to local guys that were breaking rockers around town at low RPM's, even with low lash solids. Without the rebound from the spring at high rpm's, figured it was breaking from bouncing off the backside of the cam. We'll still meet our HP goal, just a little more cam.


Shaved the trunk lock hole. You can see a little heat fence around it to minimize heat warping.
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All done with the trunk
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Some antenna hole shaving
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More heat fence with the anntena
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And done with it
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Some frame sleeving for the K-member bolts
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We've got the Fab 9 in, just need to get the calipers on and take some more pics !
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  #49 (permalink)  
Old 10-29-08, 05:32 PM
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What is your HP/TQ target on this build?
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  #50 (permalink)  
Old 10-29-08, 05:40 PM
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Tranny and clutch are rated to about 850 in drag racing scenarios @ around 3800 lbs. We'll be under that. But 700rwhp around 15-17psi. Tranny setup is the only weak link. Everything else is rated over 1k hp. Upgrade turbo and fuel sytem, set on kill So it should be perfectly reliable at 700rwhp.
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