Pontiac - Race The next Level

          
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Old 11-25-2019, 08:18 PM
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Default Front and rear spring recommendation

Looking for a good stock location spring set up for the track on my 1969 gto. Car is stock weight with highport heads and northwind intake. 295 60 rear drag radial and 28" front runners. Car sits high with stock springs, would be nice to have it lower if possible.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
  #2  
Old 12-02-2019, 01:55 PM
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No one quick using stock configuration?

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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Old 12-02-2019, 02:56 PM
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I have moroso 47200-100 on the front of my car. I can't find the number on the rear springs. I will keep looking.

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A new best of 9.135 @ 145.41
71 Lemans Sport.
72 Lemans Sport.
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Old 12-02-2019, 05:04 PM
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While not a 69, I am running the lightest Moog 6 cyl springs in the front and station wagon springs in rear. Ride height in the front is about 1 1/2 lower than factory.

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66 GTO Nostalgia Super Stock/Street Legal Car
421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99
Multiple NSCA/NMCA World Champion

66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles
67 GTO 2dr Post, 428, Tri Power, 3.55 Gears
80 Trans Am Black SE Y84 W72 WS6
  #5  
Old 12-03-2019, 03:18 PM
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Santhuff 175 springs on the front, really needs 200's. The headers are paying the price for the look right now. Replacement lowers on the back from opgi, 2" drop. I had a 3" drop on it that looked great, but my shocks were bottomed out in the stock mounting spots. I have the shortest 5" stroke afco makes and i had to cut the foam bumper in half . The 2" was a compromise.






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1972 Pontiac LeMans
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Quarter-Max Chassis and Racing Components
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Old 12-03-2019, 05:09 PM
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On my 72 I have the original springs in front and in the rear I am using 2.5 x 14 170lb coil over springs. Weight of the 72 is 3950lbs.

On the 67 I am using 6 cylinder springs with a coil cut off in the front. The rear I am using 2.5 x 12" 150lb coil over springs. 67 weighs 3200lbs.

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Old 12-03-2019, 05:12 PM
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for reference. first photo is stock springs after the aluminum heads and fiberglass hood. next two photos are with the 3" drop springs






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1972 Pontiac LeMans
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Quarter-Max Chassis and Racing Components
  #8  
Old 12-05-2019, 01:37 PM
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Thanks guys very helpful.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
  #9  
Old 12-05-2019, 03:06 PM
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the correct thing for me to do will be to put a little stiffer spring back on the front and lower it with the spindles. My fronts dont seem to be bound up and the car works great, but its realistically probably not enough spring rate for that heavy of a car. At ride height the upper control arm is angled up a touch and im not a fan of that because i suppose in theory it could be causing side load on the upper ball joint.

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1972 Pontiac LeMans
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Quarter-Max Chassis and Racing Components
  #10  
Old 12-06-2019, 06:39 AM
TheGrudge TheGrudge is offline
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Tough looking car Adam! Curious - are they 275/60/15 on the rear?
Thanks
Jordan

  #11  
Old 12-06-2019, 12:35 PM
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yes they are Jordan, thank you!

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1972 Pontiac LeMans
Thanks to
Fuelab Digital Fuel Delivery
Quarter-Max Chassis and Racing Components
  #12  
Old 12-06-2019, 01:18 PM
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This is what I have going on now. Its sitting too high for my taste. There is plenty of room for the 295 dr to fender lip, need 2 inches I think
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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
  #13  
Old 12-06-2019, 03:15 PM
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Adam what is the back space of the rear wheel?

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A new best of 9.135 @ 145.41
71 Lemans Sport.
72 Lemans Sport.
  #14  
Old 12-06-2019, 03:28 PM
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Here are a couple of pics of my junk.
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A new best of 9.135 @ 145.41
71 Lemans Sport.
72 Lemans Sport.
  #15  
Old 12-06-2019, 03:30 PM
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The front is a little bit lower because I changed the front control arms to TRZ.

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A new best of 9.135 @ 145.41
71 Lemans Sport.
72 Lemans Sport.
  #16  
Old 12-06-2019, 05:55 PM
TheGrudge TheGrudge is offline
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Gman - guessing your rears are 295/65? Mini tub/notched rails?
Yours is tough too! Dig the scoop!
Jordan

  #17  
Old 12-07-2019, 10:38 AM
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Mine is running moroso trick springs on all four corners with afco double adjustable rears and cheap C/E shocks up front with stock a frames. best 60' 1.32
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  #18  
Old 12-07-2019, 11:19 AM
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No notch or mini tub. My tires are 30x9

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A new best of 9.135 @ 145.41
71 Lemans Sport.
72 Lemans Sport.
  #19  
Old 12-07-2019, 03:43 PM
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Vince gto what rates are the truck springs?

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
  #20  
Old 12-07-2019, 03:43 PM
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Sorry trick springs.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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