TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Formula for mid 13sec 1/4s L98

Thread Tools
 
Search this Thread
 
Old 01-14-2001, 08:53 PM
  #1  
Member
Thread Starter
 
RoadRocket L98's Avatar
 
Join Date: Oct 2000
Location: Iowa
Posts: 189
Likes: 0
Received 0 Likes on 0 Posts
Formula for mid 13sec 1/4s L98

What are some good performance ideas for my goal of mid 13 second quarter mile times? What parts perform the best and are worth the money? Converter? Gears? What ratios are best if I want to have some top speed capability? Any other ideas? Thanks.

------------------
'83 Firebird 2.8
'89 Firebird Formula 350
2nd owner, red/grey, t-tops, dual cats, and a 3.27:1 rear
K&N, TB bypass, No MAF screens, CAI, full Accel ignition
Old 01-14-2001, 10:04 PM
  #2  
Supreme Member

iTrader: (1)
 
cobrakiller1989's Avatar
 
Join Date: Apr 2000
Location: Baltimore, MD
Posts: 1,108
Likes: 0
Received 0 Likes on 0 Posts
I would start off with full exhaust.(headers, y-pipe, muffler) A set of 3.73's. And a 2600-2800 stall converter. That should get you close to your goal.
Good luck
Old 01-15-2001, 12:32 AM
  #3  
Moderator

iTrader: (1)
 
Kevin91Z's Avatar
 
Join Date: Jul 1999
Location: Orange, SoCal
Posts: 10,943
Received 19 Likes on 17 Posts
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
See my mods list in my sig.

To keep a stock engine, go with a higher stall converter, drag radials, headers and exhaust, and some kind of cold-air or ram-air setup, along with the free mods.

------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Old 01-19-2001, 12:33 AM
  #4  
Member
 
black5.7GTA's Avatar
 
Join Date: Aug 2000
Location: Tampa,FL,U.S.
Posts: 315
Likes: 0
Received 0 Likes on 0 Posts
see sig.

------------------
1990 Trans Am GTA
Bosch plat+4 plugs,SLP plug wires,Hypertech coil kit,Fastchip PROM,SLP 160 therm,T-body bypass,SLP crankpulley,Breathless AFPR,,ported plenum,SLP runners,SLP flowbooster,SLP cold air,K&N,SLP 3"catback,SLP torqueconverter,SLP shiftkit,Mobil 1
14.3@96 stock
13.5@102 w/mods
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Prodigious
Theoretical and Street Racing
35
04-13-2021 02:37 PM
GeneralIesrussi
Carburetors
5
01-20-2020 01:06 PM
cowansauto
LTX and LSX
1
12-10-2015 12:16 PM



Quick Reply: Formula for mid 13sec 1/4s L98



All times are GMT -5. The time now is 09:33 PM.