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

Wicked Confused about 350 injectors

Thread Tools
 
Search this Thread
 
Old Dec 31, 2003 | 10:40 AM
  #1  
gta_88_kicks's Avatar
Thread Starter
Member
 
Joined: May 2003
Posts: 138
Likes: 0
From: Easton, MA
Car: 1988 GTA
Engine: 355
Transmission: 700 r4
Wicked Confused about 350 injectors

Every magazine i read, the mag says the 350 uses 24 lb/hr injectors.

Every person in here says they're 22 lb/hr injectors.

Which is right?
Reply
Old Dec 31, 2003 | 11:11 AM
  #2  
llvll4l2c91350's Avatar
Supreme Member
 
Joined: Jan 2003
Posts: 2,067
Likes: 1
22 for stock TPI 350's.

i think 24's came stock in LT1 motors
Reply
Old Dec 31, 2003 | 11:41 AM
  #3  
Insomniac92z28's Avatar
Member
 
Joined: Nov 2003
Posts: 257
Likes: 0
From: Wellington, Kansas
Car: 92Z28
Engine: L98
Transmission: A4
Yep, 22s in the 350tpi and 24s in the 94-97 LT1s (the 93 F-body LT1s still used 22s)
Reply
Old Jan 1, 2004 | 01:13 AM
  #4  
anesthes's Avatar
TGO Supporter/Moderator
25 Year Member
iTrader: (13)
 
Joined: Jul 1999
Posts: 12,102
Likes: 127
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Every magazine i read, the mag says the 350 uses 24 lb/hr injectors.

Every person in here says they're 22 lb/hr injectors.

Which is right?
It really comes down to how much HP each injector is servicing.
On a stock 350 TPI motor each injector is servicing around 31 hp.

Say on a 500hp 350 each injector needs to support 62-65 hp, so obviously the injectors need to be larger, but the displacement is still 350.

Get it?

-- Joe
Reply
Old Jan 1, 2004 | 01:25 AM
  #5  
Morley's Avatar
Supreme Member
 
Joined: May 2002
Posts: 4,099
Likes: 2
85 Vette 350 used 24# inj, at a little lower pressure.
Reply
Old Jan 1, 2004 | 09:47 AM
  #6  
formula_novice's Avatar
Senior Member
iTrader: (1)
 
Joined: Sep 2003
Posts: 988
Likes: 0
From: St. Louis, Missouri
Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
I've used 24# Accel Injectors in my 89 TPI for several years now without modifying fuel pressure, etc... the car runs fine.
Reply
Old Jan 1, 2004 | 12:24 PM
  #7  
anesthes's Avatar
TGO Supporter/Moderator
25 Year Member
iTrader: (13)
 
Joined: Jul 1999
Posts: 12,102
Likes: 127
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
I've used 24# Accel Injectors in my 89 TPI for several years now without modifying fuel pressure, etc... the car runs fine.

Well the ecm will correct the fuel differences via o2 sensor. But most of us would rather drive around in a car thats tuned, rather than constantly correcting.

You prolly run a little rich under PE (wot) however, but I guess that never hurt anything.

-- Joe
Reply
Old Jan 1, 2004 | 02:12 PM
  #8  
Morley's Avatar
Supreme Member
 
Joined: May 2002
Posts: 4,099
Likes: 2
Originally posted by anesthes
Well the ecm will correct the fuel differences via o2 sensor. But most of us would rather drive around in a car thats tuned, rather than constantly correcting.

You prolly run a little rich under PE (wot) however, but I guess that never hurt anything.

-- Joe
not to mention rich at cold start (open loop)
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MustangBeater20
TBI
11
Oct 29, 2022 09:20 PM
xxx3man`
Engine/Drivetrain/Suspension Wanted
2
Aug 28, 2015 02:21 PM
twest2k2
TPI
5
Aug 24, 2015 11:26 AM
86IROC112
TPI
12
Aug 21, 2015 07:20 PM
Armored91Camaro
DIY PROM
3
Aug 12, 2015 09:41 AM




All times are GMT -5. The time now is 04:49 PM.