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280 Posts
I've got a stock turbo, full weight (3700 race weight) Grand National that I'm trying to get to short better. Below are my suspension mods:
- Front QA1's (single adjustables) set to the softest settings
- Stock springs on every corner
- Stock rear shocks (looking to get QA1's for the rear also)
- Adjustable rear uppers, pinion angle set to -3, neutral preload
- Metco box, non adjustable lower control arms
- Metco lower control arm lower control arm relocation brackets (lowered the control arm about 3 inches)
- No airbags
- 275/60 MT ET street radials
- 1 3/8" solid rear sway bar
The car goes nice and straight (preload fixed that) and is pretty constant. I'm leaving at the track around 12 psi and the car goes 1.67-1.69, with a one time best of a 1.65. I'm trying to get the car to transfer weight better. I was looking into getting some front springs that will come up fast to get weight on the DR's as quick as possible. I've read here and other forums that Moroso Trick Springs are garbage and not very good for street driving. I usually put 30 or so passes, and 1200 miles a year on the car. I also get into some street action from time to time.
Should I go with some Moog springs? If so what number? I don't have scales, so I'm not sure how much the front of the car weighs. Should I loosen the front upper and lower A arm bolts? If so what is the procedure?
I've included some animations to show how car leaves. I like how the lower control arm brackets causes the rear end to plant. Before the chassis would just squat on the tires, unloading them.
Anything else I can focus on?
- Front QA1's (single adjustables) set to the softest settings
- Stock springs on every corner
- Stock rear shocks (looking to get QA1's for the rear also)
- Adjustable rear uppers, pinion angle set to -3, neutral preload
- Metco box, non adjustable lower control arms
- Metco lower control arm lower control arm relocation brackets (lowered the control arm about 3 inches)
- No airbags
- 275/60 MT ET street radials
- 1 3/8" solid rear sway bar
The car goes nice and straight (preload fixed that) and is pretty constant. I'm leaving at the track around 12 psi and the car goes 1.67-1.69, with a one time best of a 1.65. I'm trying to get the car to transfer weight better. I was looking into getting some front springs that will come up fast to get weight on the DR's as quick as possible. I've read here and other forums that Moroso Trick Springs are garbage and not very good for street driving. I usually put 30 or so passes, and 1200 miles a year on the car. I also get into some street action from time to time.
Should I go with some Moog springs? If so what number? I don't have scales, so I'm not sure how much the front of the car weighs. Should I loosen the front upper and lower A arm bolts? If so what is the procedure?
I've included some animations to show how car leaves. I like how the lower control arm brackets causes the rear end to plant. Before the chassis would just squat on the tires, unloading them.
Anything else I can focus on?

