coredevice

I have a 1990 GTA........well it used to be a GTA. My whole objective with this car was to make it a showcar with *****. I also wanted it to have something different about it. With my personal love for 3rd gens and this being my car since I was 18 I started the "re-do" process. I ripped out the motor and basically saved the block and built a monster of a 383. Haven't had it dyno'd yet but i figure it at about 550-600hp. Pulled out all the electronics in the whole car, and now running it with a carburator. Of course you know this also leaves me to re-doing the whole dash cluster too. (looking forward to that). Although many has said it was a bad idea getting rid of the fuel injection, I love the simplicity of it. That and it is soooooooooooo neat looking under the hood without wires running everywhere. Now the motor is in and running great and I had the whole engine compartment re-done, ripped out the heat/ac, relocated the battery so there are less visible wires, had the firewall smoothed and of course had it painted yada yada yada. Now I am moving into the chassis and of course, what seems to be a problem for everyone.......the exhaust. Here is what I am thinking:

For the trans I think I am going to keep the 700r4 but have it overhauled. I am told with the right parts it will have no problems handling the HP. What do you think? Do you know of a shop with a good reputation?

For the rear I was thinking of the 9" but realistically I am not going to be towing it to the track every weekend so do I really need all that? Do you think the 12 bolt will be enough? I like the price alot better.

I started looking at the BMR suspension and it "looks" great. Will my car "hook" when I want it too??? Dont get me wrong I will run the car on occasion...lol

Now the exhaust!!!!!!!!!!! Damn this underbody!!!!!!!! I am not going to run cats. I hear mufflex makes a system to go from the collectors on long tube hookers back with the 4" single out. Do you think the mufflex system will give me enough flow? I am open to suggestions and sound clips would help if anyone has similar amount of HP.

WS6Jim

iTrader: (9)

90 is a rare year for gtas and any nice tubular suspension will help a lot in hooking if you have the right tire to it

adam3566

Sounds like a pretty cool project, keep us informed if you decide to do it.

coredevice

here are pics of the motor and a list of what I had done to it:

diamond 2618 forged flat top 383 pistons
SCAT "I" beam rods 6" cap screw w/ 7/16 bolts
SCAT cast crankshaft, 3.75 stroke
speed pro "plasma" poly rings
F/M cam bearings
F/M main bearings
F/M connecting rod bearings
high volume oil pump
HD double roller timing chain
HD oil pump driveshaft
ARP main studs
Manley performance valves (2.02/1.6)
Manley machined keepers
Manley valve spring set (dual)
Manley screw in rocker stud kit
MANLEY PUSHROD GUIDE PLATES
Manley valve seats
Manley 7.794 pushrods
Comp Cams magnum rocker kit 1.6 ratio
comp cams Xtreme energy hydrolic roller camshaft
world products sportsman 2 cylinder heads 64cc
power plus intake
AED 750 HO carb
SCAT damper (400 style)
SCAT flex plate
DUI performance distributor
Live Wire set
Bowl and chamber competition port work, full exhaust port
March pulley kit
March power steering pump
JEGS altenator

eventually painting the car black.

blackls1maro

iTrader: (2)

open headers! i bet it'll be loud as hell!

coredevice

right now you drive for 15 min and you cant tell if your breathing or not.

BizZzatch350

iTrader: (33)

Good luck man! I have had my 93 TA since I was 16, so I know how bad *** it is to finaly getting to really tear in to the car you have had so long and turning all those dreams for so many years in to reality.

Best of luck!
Neil

coredevice

yeah your right Neil, it is the best. Alot of money but everytime I get in it its all worth it.

Rubrburnr

iTrader: (1)

As for your exhaust, I think GMMG fits on the 3rd gens as well...just throwing it out there...

coredevice

I checked out the GMMG exhaust but I dont think 2.5 is suffiecient. That And i do have my doubts about the chambered muffler. I listened to sound clips and not too impressed but.......all the cars in the clips on mufflex site are stock. I would like to hear it on a 550-600 hp motor but i think there is a reason you dont see that.