upgrading my L98 need some ideas
04-08-2013, 01:51 PM
#1
Junior Member
Thread Starter
Join Date: Jul 2008
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Car: pontiac trans am gta
Engine: 350 5.7L tpi
upgrading my L98 need some ideas
i was wanting to add some more HP to my 89 GTA. Im looking to spend about 1500-2000 on it. just looking for any good ideas. thanks
04-08-2013, 02:05 PM
#2
Re: upgrading my L98 need some ideas
Exhaust and intake mods. Big runners and ported base or aftermarket base or go different efi intake like holley stealth ram, edelbrock pro flo xt, etc
Make great hp gains, but should compliment it with some home tuning and a torque converter with more stall speed. 2000$ will get you a good amount of items if you shop around
Make great hp gains, but should compliment it with some home tuning and a torque converter with more stall speed. 2000$ will get you a good amount of items if you shop around
04-08-2013, 02:21 PM
#3
Supreme Member
iTrader: (8)
Join Date: Oct 2001
Location: Il
Posts: 11,687
Received 745 Likes
on
505 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: upgrading my L98 need some ideas
F.I.R.S.T. TPI intake, tq converter, trans build, brake upgrades, headers and catback.
It all depends on what kind of power your looking for.
What are you doing with the car?
It all depends on what kind of power your looking for.
What are you doing with the car?
04-08-2013, 07:33 PM
#4
Supreme Member
Join Date: Aug 2004
Location: Norwich, CT
Posts: 1,213
Likes: 0
Received 3 Likes
on
2 Posts
Car: '89 Trans AM/'88 GTA
Engine: (2) Tuned Port L98's
Re: upgrading my L98 need some ideas
The FIRST would eat up more than half his budget, plus a few more cents getting it plumbed up and installed!!
04-08-2013, 07:44 PM
#6
Supreme Member
iTrader: (8)
Join Date: Oct 2001
Location: Il
Posts: 11,687
Received 745 Likes
on
505 Posts
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: upgrading my L98 need some ideas
I would like to do a 1st intake on my 89 formula350 if I didnt have to cut the TBody mount off and weld on the normal TPI T-body mount..
I just hate that T-body it uses.
I just hate that T-body it uses.
Trending Topics
04-08-2013, 09:07 PM
#8
Supreme Member
Join Date: Aug 2004
Location: Norwich, CT
Posts: 1,213
Likes: 0
Received 3 Likes
on
2 Posts
Car: '89 Trans AM/'88 GTA
Engine: (2) Tuned Port L98's
Re: upgrading my L98 need some ideas
Ive always wondered what a nice 383 with GMPP fast burns, a FIRST vortech base/intake with a matched cam would do with the right stall. I wish I had an extra 3 grand to find out.. I agree though, Im not a huge fan of the T-body..
04-10-2013, 10:11 AM
#10
Member
iTrader: (1)
Join Date: Jan 2002
Location: Michigan!
Posts: 482
Likes: 0
Received 0 Likes
on
0 Posts
Engine: Vortec 4200 Inline 6 PT70 Turbo..
Transmission: 4L65E
Axle/Gears: 3.73
Re: upgrading my L98 need some ideas
Sticky tires lile a Micley Thompson drag radial 245/50/16
2400-2600rpm stall torque converter/shift kit/trans cooler
100 shot of nitrous oxide, Nitrous Express LT1 wet kit works good
These mods take you from a 14/15 second car to a 12 second car.
They most importantly DO NOT NEED custom pcm tuning to work properly. The tremendous amount of torque will test your driveshaft/rear gear and axles. Mo power mo problems.. Goodluck! That is the cheapest and easiest way to a quick TPI setup.
2400-2600rpm stall torque converter/shift kit/trans cooler
100 shot of nitrous oxide, Nitrous Express LT1 wet kit works good
These mods take you from a 14/15 second car to a 12 second car.
They most importantly DO NOT NEED custom pcm tuning to work properly. The tremendous amount of torque will test your driveshaft/rear gear and axles. Mo power mo problems.. Goodluck! That is the cheapest and easiest way to a quick TPI setup.
04-14-2013, 06:52 PM
#14
Supreme Member
iTrader: (9)
Join Date: Mar 2007
Location: Raleigh, NC
Posts: 1,804
Likes: 0
Received 2 Likes
on
2 Posts
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: upgrading my L98 need some ideas
First intake with gm hotcam.... sounds mean and very quick on the street
Ken has stopped making them for like a year now... dont know whats going on over there and good luck trying to find a used one complete.... but if he does get back on track Get a FIRST and never look back.... just make sure you come up with a throttlebody adapter to use the stock type... the FIRST tb is a big POS had numerous idiling and driveability issues with the throttlebody....luckily ken made me the only adapter plate..EVER....and he assured me that he WILL not be making anymore adapter plates after mine...anyways car drives and runs perfect after the adapter and used my stock throttlebody. I will never sell my custom FIRST considering you cant buy one like mine...
here is the issue I had with the stock FIRST throttlebody
Ken has stopped making them for like a year now... dont know whats going on over there and good luck trying to find a used one complete.... but if he does get back on track Get a FIRST and never look back.... just make sure you come up with a throttlebody adapter to use the stock type... the FIRST tb is a big POS had numerous idiling and driveability issues with the throttlebody....luckily ken made me the only adapter plate..EVER....and he assured me that he WILL not be making anymore adapter plates after mine...anyways car drives and runs perfect after the adapter and used my stock throttlebody. I will never sell my custom FIRST considering you cant buy one like mine...
here is the issue I had with the stock FIRST throttlebody
Last edited by 88fastgta; 04-14-2013 at 07:14 PM.
Thread
Thread Starter
Forum
Replies
Last Post
NinjaNife
Tech / General Engine
27
08-23-2015 11:49 AM
