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

LT1 injectors on 89 TPI?

Thread Tools
 
Search this Thread
 
Old Nov 3, 2011 | 09:12 AM
  #1  
88 Z28 Guy's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Sep 2005
Posts: 315
Likes: 1
From: St.Amant, La.
Car: 1989 IROC
Engine: L98
Transmission: 700R4
Axle/Gears: 3.42 Auburn
LT1 injectors on 89 TPI?

I have discovered I have a leaky injector when I was deleting vats. I want to take care of it before it washes the rings out and gets in the oil cuz who knows how long the previous owners drove it like that. My question is can I run LT1 injectors without having to modify anything. I figured the injector bodies should be the same so mounting them in place shouldn't be a problem but are the injector plugs different? Also what's the flow rates on stock TPI injectors cuz the ones I want to get from a guy in the forsale section are 26 lb.
Reply
Old Nov 3, 2011 | 06:28 PM
  #2  
vetteoz's Avatar
Supreme Member
20 Year Member
iTrader: (13)
 
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: LT1 injectors on 89 TPI?

L98's and 92/93 LT1 are 22lb
94'+ LT1 are 24lb
All interchange but I don't think you can step up to 26's on a L98 without a retune
Reply
Old Nov 3, 2011 | 06:32 PM
  #3  
Aaron_SK's Avatar
Member
iTrader: (1)
 
Joined: Apr 2006
Posts: 356
Likes: 0
From: Washington
Car: 1985 Sport Coupe
Engine: 3800 Series II Turbo
Transmission: 4th-gen WC T5
Axle/Gears: 3.27 BW Limited
Re: LT1 injectors on 89 TPI?

They will physically drop in. They are slightly shorter but not enough to make a difference. The connectors are the same.

You will need to tune a chip for the car with the new injectors. You can drive it with the stock chip but it will run pig rich and thus be down on power.
Reply
Old Nov 3, 2011 | 10:15 PM
  #4  
adam.binkley's Avatar
Junior Member
 
Joined: Jun 2008
Posts: 17
Likes: 0
Re: LT1 injectors on 89 TPI?

are LS1 injectors much different from TPI injectors? other then the wiring pigtail will they interchange?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
midge54
LTX and LSX
21
Dec 27, 2019 04:14 PM
midge54
Engine/Drivetrain/Suspension Wanted
1
Jan 29, 2017 07:00 PM
Steve78LT
Tech / General Engine
4
Feb 24, 2016 12:15 AM
Brcharrelson
TPI
15
Aug 26, 2015 07:47 PM
Sanjay
Engine/Drivetrain/Suspension Parts for Sale
1
Aug 12, 2015 03:41 PM




All times are GMT -5. The time now is 03:29 AM.