new to car and site.....want some ideas
new to car and site.....want some ideas
ok guys just got this car and dont have a clue about it. my previous car was 01 mustang gt. i could tell you alot of things about it. but this car is differant. i want to make it faster than the mustang was. it feels like it has a lot of potential, but i dont know where to start. headers??? exhaust???
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iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
A GTA isn't a "Grand Trans Am". 
Anyway, telling us what drivetrain you have would probably be a good start. 305 automatic? 350 automatic? 305 5-speed?

Anyway, telling us what drivetrain you have would probably be a good start. 305 automatic? 350 automatic? 305 5-speed?
Supreme Member

Joined: Sep 2001
Posts: 1,195
Likes: 0
From: Flowery Branch, GA
Car: 1985 Iroc-Z
Engine: 1 BA 305 TPI
Transmission: Probuilt 700R4 - 2800 Stall Midwest
Axle/Gears: 3.42
It's all about how much you want to spend. You can check my sig. to see what I have done to mine. Start there and move on to cam and heads if money allows.
basically this is what i was wanting to do:
383 stroker with nice aluminum heads, cam, some type of tpi intake. msd 6al ignition. headers. roller rockers.
of course it will take a little over a year to save up enough money to get all of this.
383 stroker with nice aluminum heads, cam, some type of tpi intake. msd 6al ignition. headers. roller rockers.
of course it will take a little over a year to save up enough money to get all of this.
Welcome to the site, and thank *** your no longer one of "them" anyway, I would go with a full exhaust first to get you started. If you are gunna rebuild the motor to a stroker, I would start to invest into parts for the car that are gunna get you to the max potential so that the 383 can put all the power to the ground. Suspension, trans, exhaust, fuel and spark and drive train.. build it all up before you start to drop some serious power in that car. good luck man!
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my buddy has a moser 9 in rear end that came out of a iroc with 4.10 gears in it, and i believe that wilwood was the name of the brakes. but it is in great shape and he only wants about 1200 for it. also, i know that everyone asks this question but here goes, i noticed alot of smog and emissions under there. how hard is it to get rid of all that??? looks to me like it just basically goes to the exhaust manifolds, and runs all back to the smog pump. what i was wanting to do is get a set of long tubes for my car that doesnt have all that smog on it, get rid of the somg pump and run a shorter belt. is this difficult, or what else is involved??? i did a search on this, but didnt find a whole lot. keep in mind i know nothing about this car
Supreme Member

Joined: Sep 2001
Posts: 1,195
Likes: 0
From: Flowery Branch, GA
Car: 1985 Iroc-Z
Engine: 1 BA 305 TPI
Transmission: Probuilt 700R4 - 2800 Stall Midwest
Axle/Gears: 3.42
With these cars, full exhaust is a big thing. I see you have the NO-Flowmaster on there now. If you are looking for top performance I would start with removing that. It give a good sound(similar too a Muskank), but does't flow very good. There a lot of good exhausts.(Random Tech, Hooker,Magnaflow) Search the exhaust board.
yeah, the only reason that it is on there is because i had to have something something fast. the car had been sitting up for a while so the plugs and wires were corroded. (sp) i tried to crak it the other day, and it wouldnt fire and when it did, it had so much fuel in there that it backfired and blew the muffler out.
Originally posted by duke a
my buddy has a moser 9 in rear end that came out of a iroc with 4.10 gears in it, and i believe that wilwood was the name of the brakes. but it is in great shape and he only wants about 1200 for it. also, i know that everyone asks this question but here goes, i noticed alot of smog and emissions under there. how hard is it to get rid of all that??? looks to me like it just basically goes to the exhaust manifolds, and runs all back to the smog pump. what i was wanting to do is get a set of long tubes for my car that doesnt have all that smog on it, get rid of the somg pump and run a shorter belt. is this difficult, or what else is involved??? i did a search on this, but didnt find a whole lot. keep in mind i know nothing about this car
my buddy has a moser 9 in rear end that came out of a iroc with 4.10 gears in it, and i believe that wilwood was the name of the brakes. but it is in great shape and he only wants about 1200 for it. also, i know that everyone asks this question but here goes, i noticed alot of smog and emissions under there. how hard is it to get rid of all that??? looks to me like it just basically goes to the exhaust manifolds, and runs all back to the smog pump. what i was wanting to do is get a set of long tubes for my car that doesnt have all that smog on it, get rid of the somg pump and run a shorter belt. is this difficult, or what else is involved??? i did a search on this, but didnt find a whole lot. keep in mind i know nothing about this car
yeah, whoever had it before me already got rid of the cats. the lines are just cot off down there and breathing openly with the outside air. i am pretty sure that is not good for the tune of the car.
doesnt really have anything with the tune... i would just crimp that hose. Make sure that if you get headers, and you dont want smog, to get the ones w/o AIR tubes. hooker, heddman, and slp make them. Heddman and SLP have a y pipe for the shorties, and Hooker makes LT's and shorties, just no y pipe for them
First of all, Welcome to the GTA Family
I suggest reading the tech articles... https://www.thirdgen.org/tech
That should answer a lot of your questions.
There's a sticky at the top of the TPI page https://www.thirdgen.org/techbb2/sho...hreadid=104792
This will give you an idea of what you might want to do as far as computer chips
I outrun new "Stock" Mustangs all day. Exhaust, solid shifts, good tune, free flowing intake, etc. will let you outrun the new ones. Doesn't take much IMO.
If you are wanting to build a 383, you probably need to decide a budget...and how much your willing to do yourself, which means tools, etc. If you don't mind ditching the TPI look, go with the Holley Stealth Ram, Miniram, or John Millican's LT1 Intake conversion. If you want to build a 383 and keep the TPI (what I am working on right now), then check out this post for some good reading...https://www.thirdgen.org/techbb2/sho...threadid=84340
Later
I suggest reading the tech articles... https://www.thirdgen.org/tech
That should answer a lot of your questions.
There's a sticky at the top of the TPI page https://www.thirdgen.org/techbb2/sho...hreadid=104792
This will give you an idea of what you might want to do as far as computer chips
i want to make it faster than the mustang was
If you are wanting to build a 383, you probably need to decide a budget...and how much your willing to do yourself, which means tools, etc. If you don't mind ditching the TPI look, go with the Holley Stealth Ram, Miniram, or John Millican's LT1 Intake conversion. If you want to build a 383 and keep the TPI (what I am working on right now), then check out this post for some good reading...https://www.thirdgen.org/techbb2/sho...threadid=84340
Later
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iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
4.10 gears are arguably too much gear for a stock style TPI system. Since you want high cubes and good heads, the stock style TPI is going to choke the **** out of your motor anyway. I would definately say look into the stealth ram. This will be the cheapest path for upgrading the induction, and I think it'll also be the most effective.
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Yeah. You need to play games with the fuel lines, but that's been done enough times that you won't be doing anything new. Do a search or read the sticky on the top of the page. You'll learn everything there is to know about the stealth ram.
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