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Old 01-11-2001, 10:45 PM   #1
quick89gt
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Location: O'Fallon, IL
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Post A-Trim or S-Trim????

Ok, here is the deal, everyone. I have $2,000 right now. I was wondering if I should save up and buy an S-trim to run 8# of boost on my combo listed below, or if I should just save some money, but an A-Trim, start @ 5#, and then pulley it up to 8#, or will this HARM the A-Trim???? What do you think I should do? I want to make around 400hp with the blower and my combo listed below.

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'89 GT, T-5,
Bored .030 Over, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Keith Black hyp. flat top Pistons, Screamin' Deamon Coil, Champion Plugs, March Underdrive Pulleys, 255lph Fuel Pump, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears.
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Old 01-12-2001, 12:32 AM   #2
quick89gt
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ttt

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'89 GT, T-5,
Bored .030 Over, GT-40P heads, MAC 1 5/8" headers, MAC Off-Road H-Pipe, 2 1/2" Flowmasters, Edelbrock 65mm T.B., Trick Flow Intakes, Crane 2031 cam, 1.7 Roller Rockers, Keith Black hyp. flat top Pistons, Screamin' Deamon Coil, Champion Plugs, March Underdrive Pulleys, 255lph Fuel Pump, SVO Motorsport Clutch, Adjustable Fuel Pressure Regulator, Formula GP Suspension, MAC Upper & Lower Control Arms, FMS 3.73 Gears.
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Old 01-12-2001, 12:55 AM   #3
88GT5.013.02
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I don't know a whole lot about blowers, but quite a few people here in MI that I have spoke to said to buy the T-trim. They said that you can make it have as little as 9#'s , but it can go pretty high.

I don't know for sure, but maybe somenone will see this and correct me. This guy only had a 9# pulley on his car, but with his combo it made 14#'s of boost. So remember, you might make more with your combo, if it breathes right. (Am I right that you can make more boost than what is advertised, with a good combo of parts?)

[This message has been edited by 88GT5.013.02 (edited 01-12-2001).]
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Old 01-12-2001, 04:05 AM   #4
Skyman
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Well it all depends on how anxious you are.
I've been in the same boat as you for quite a while. I finally found a used Paxton SN-89 which is basically like an A-trim. I am going to pulley it for 9psi. But it starts at 6 like an A-Trim. This I figure should put me around 400-410hp. Im estimating I haev about 320hp right now.
Remember you'll need tuning and other stuff that you wont think of after the S/C install, so it will cost more than just the kit. For me 9psi will be plenty, if I deciede to go for more later I will.

I have a line on a T-trim for $1750. With only 11 passes and 1000miles on it. I think the guy still has it, email me if you want it asap.
Skyler

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-1989 Saleen Mustang #406-
TFS Heads, Edelbrock intake, E-303, 3.73's, 1 5/8 shorty headers, Offroad-Hpipe, 2chamber flows, 36psi FPR, playing with timing still, 70mm tb, 73mm maf, 24lb injectors, K/N, March Crank pulley, MSD6a, 9mm wires and FMS Aluminum driveshaft.
Best ET 13.2@106mph Needs tuning...
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Old 01-12-2001, 01:52 PM   #5
clearwaterms
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S trim...
I have an A trim and trust me, im kicking my self in the *** for not buying the S trim, I have long block with all the bolt ons changed, and I am going to add a new intake and cam this spring, with the intent of adding upgrading to either an S trim or T trim later, start at the t trim from skyler you will be happy with it at 9 pounds, and you can always buy a 14~17# pulley for the track and prepare for around 450 hp. Start with the bigger blower the A trim can be pullied to 10#'s but its a iron impeller wheel and the rest are billet, and they are much stronger.
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Old 01-12-2001, 09:36 PM   #6
redyj91
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Def. S or T Trim. Never compromise unless you dont think you'll ever have the cash for the S or T.

Mike

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Old 01-16-2001, 11:07 PM   #7
MOUSETRAP
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Another vote for the S-trim. I to bought an A-trim in june of 2000, well it is now on its way back to me after being upgraded to an S-trim. It would have been much cheaper and i would have gotten much more hp with the S-trim because it comes with everything needed to run more boost which i ended up having to purchase seperately for a lot more money.
Jarrod

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87GT Vortech S-trim, 155intank pump, 24# injectors, 75mm pro-m, cobra intake, exhaust, 3.73's, mega bite jr's, Central coastal mustangs drag springs and some other freebies.
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