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What are the first 10 mods i should do!?

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Old 09-26-2013, 01:27 PM
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Arrow What are the first 10 mods i should do!?

Just got an all stock 99 trans am with the ls1 5.7. What do i spend my money on first
Old 09-26-2013, 02:16 PM
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https://ls1tech.com/forums/new-ls1-o...anna-fast.html
Old 09-26-2013, 02:20 PM
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Huron speed turbo kit!
Old 09-26-2013, 02:21 PM
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depends on if you are going for looks or hp.

tint windows
wheels
suspension and lower
remove side moldings
wire mod in engine bay

that's just a few things to start wih if you are going for looks, the thread referenced above is great if you are wanting to beef up the motor....
Old 09-26-2013, 02:25 PM
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Originally Posted by vanwyk99
Just got an all stock 99 trans am with the ls1 5.7. What do i spend my money on first
Apperance modz or engine modz?
Old 09-26-2013, 03:06 PM
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What's the budget here?
Old 09-26-2013, 04:11 PM
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start with the "free" or almost free mods.
1. Remove side Molding
2. Airlid Mod (remove baffles from inside of airlid)
3. Airbox Mod (Cut out bottom of air box to allow more air in)

after you have those done.
4. New Shocks (gotta get it handling better)
5. Sway Bar Bushings and Endlinks
6. Strut bar
7. Sub Frame Connectors
8. Wheels and Tires
9. Exhaust
10. Tint Windows
11. "Big 3"

Basically start with making sure any future work will stay on the road, it doesn't take much to overwhelm the stock suspension. So start there.
Old 09-27-2013, 08:08 AM
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Lowering springs, Rims (I went with C5Zs cuz I'm sheap and have no taist), headers, cam, maybe another cam since you bought too small of one the first time, MLS gaskets head studs and LS7 lifters to go with that bigger cam, nitrous (because its to sheap for the power to pass up), clutch(because you'll spray right through the stock one on a 150 button, or the cam if your me), tinted windows, and stealth box because its a street car and needs tunes.

Well thats what I did at least with my stock '99
Old 09-27-2013, 02:10 PM
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If you plan on running DRs or a decent amount more power than stock, upgrade the rear diff.
Old 09-27-2013, 04:30 PM
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NONE, save the money for when your car needs repairs........................YOU:LL BE SORRY................
Old 09-27-2013, 04:35 PM
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#1: Research and read on this site using the Search feature.
Old 10-12-2013, 01:07 AM
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Spray that ****. Get bigger Nos jets and spray it more. Fire the ring gear out the back of your rear diff. Buy a 12-bolt.



Well actually, if it were me...Lid, headers, exhaust, shocks/springs (unless the car is low miles you can milk the existing suspension if you don't feel like dropping money on that. but some people like the lowered look that goes with the performance). Did the 99s have LS1 intake or LS6 intake? I can't remember. If it's the LS1 intake, replace that if you're aiming to get a cam. Also, get a cam, an angry one (and the valvetrain mods to support it). But while you're doing that you'll need either a new clutch or new torque converter to support the extra beef.

Easy one: plugs and wires. More of a tune up thing, but'll help keep things sharp. TR55's and just some MSD superconductor wires or equivalent.

Don't get a Hypertech, just..no
Old 10-12-2013, 11:22 PM
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Upgrade the rear axle with a 9 inch or S60. With all the go-fast suggestions, it will have a short and painful life.
Old 10-13-2013, 01:00 AM
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Originally Posted by 1981TA
Upgrade the rear axle with a 9 inch or S60. With all the go-fast suggestions, it will have a short and painful life.
That guy. That guy gets it



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