Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > TBI
Register Forgot Password?

TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 03-18-2004, 07:33 PM   #1
Senior Member
 
Join Date: Nov 2000
Location: Alburnett,Iowa,USA
Posts: 542
Car: 92RS
Engine: 357
Transmission: 700R4

Classifieds Rating: (0)

bought a 454 TBI for injectors, dissapointment

Lasy weekend I bought a 454 TBI on ebay. I have been looking for a set of BB injectors for about a month. I saw this unit and bought it thinking I could get a unit for about the same money as a pair of injectors, which I did. I just couldn't find out in time what the injectors were so I took a chance. I figured that they would be at least 75PPH. The unit is off a 94 truck. The injector PN is 17104288, so I did a search and found a couple of other people with the same unit but nobody seems to know what they flow. I did find out that the 94-95 trucks had a FP of 26-32 lbs which would indicate a small injector. Probably about the same as a LO3 injector. so I'm $108 poorer and back where I started. I did take the FPR apart and looked at the spring to verify the high pressure rating and it was one bad mother of a spring. Maybe I'll just crank up the pressure on my 65 PPH injectors and try them when the time comes. Looks like the factory didn't worry about running as much as 32 lbs of pressure.
__________________
92RS, 357 CID, 700R4, ZZ4 cam, 48 MM TBI with 65PPH injectors @ 25 PSI, 4" K&N', Walbro 190 ltr fuel pump , ported and polished S/R torquers, Crane 1.5 ratio full roller rockers, Edelbrock performer rpm manifold, MSD Blaster coil, 2055 Hooker headers and 3" exhaust, Zexel Torsen posi with 3.42 gears, Corvette servo, 2000 stall TC, tires- 16" Goodyear GSC, TGO (Jongbloed) hood

Last edited by JokerRS; 03-18-2004 at 07:40 PM.
JokerRS is offline vBGarage Page   Reply With Quote
Old 03-18-2004, 07:54 PM   #2
Supporter/Moderator
 
ShiftyCapone's Avatar
 
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 11,239
Car: '90 RS
Engine: LO3
Transmission: T5

Classifieds Rating: (4)

Send a message via AIM to ShiftyCapone
Well at least you have a 454 TBI out of the deal. Looking for the right injectors for those things is like trying to find the holy grale.
ShiftyCapone is offline vBGarage Page   Reply With Quote
Old 03-19-2004, 06:12 AM   #3
TGO Supporter
 
Join Date: Jan 2003
Location: Australia
Posts: 497

Classifieds Rating: (0)

Re: bought a 454 TBI for injectors, dissapointment

Quote:
Originally posted by JokerRS
I did find out that the 94-95 trucks had a FP of 26-32 lbs which would indicate a small injector. Probably about the same as a LO3 injector. ............ Looks like the factory didn't worry about running as much as 32 lbs of pressure.


Thats interesting, I didn't know that any TBI injectors ran fuel pressure that high from the factory.
ben73 is offline vBGarage Page   Reply With Quote
Old 03-19-2004, 10:23 AM   #4
TGO Supporter
 
Ronny's Avatar
 
Join Date: Mar 2003
Location: wisconsin
Posts: 6,664

Classifieds Rating: (0)

ben it must have changed 93-93 or so. i have same unit i believe new in box. now i had 90 lbs inj from old set up. 26-32 tells me 68 lbs as was suggested by another member here . check this outhttp://198.208.187.182/internet/VehicleCrossReference.jsp
run the part #. maybe the flow is stated or email them? they are delco part search. i dont have part # with me for mine but my unit is 94-95 454 tb truck. i posted part # about a month ago. if i did not have newer 90's i would have run what is in unit (68?) and cranked my FP to max that 85 pump will allow. i think 19 lbs or so. then change BPW as well in prom. who is to say running at higher FP with smaller inj might actually be better? especially at idle/or off idle. dont know. what fuel pump does joker run??
Ronny is offline vBGarage Page   Reply With Quote
Old 03-19-2004, 02:35 PM   #5
Junior Member
 
Join Date: Jun 2003
Location: MN
Posts: 69
Car: camaro
Engine: 355 w/supercharger
Transmission: 700 R4

Classifieds Rating: (0)

The listings I have on injectors for bigblocks are 80lb/hr or 90 lb/hr. Can you see color markings on the top of the injector? Blue/black is 80 lb/hr and dark red/dark blue is 90 lb/hr.
Hope this helps.

Chris
67 ss is offline vBGarage Page   Reply With Quote
Old 03-19-2004, 02:45 PM   #6
TGO Supporter
 
Ronny's Avatar
 
Join Date: Mar 2003
Location: wisconsin
Posts: 6,664

Classifieds Rating: (0)

we found a 3rd 454 injector. the 80-90 are older 454. 94-95 is newer 94-95. the part # cannot be reference to flow. the top color is rose colored. this injector is set fuel pressure at 26-32. that delco site may offer a tip. i have not yet investigated it. i have part # at home.
Ronny is offline vBGarage Page   Reply With Quote
Old 03-19-2004, 07:02 PM   #7
Senior Member
 
Join Date: Nov 2000
Location: Alburnett,Iowa,USA
Posts: 542
Car: 92RS
Engine: 357
Transmission: 700R4

Classifieds Rating: (0)

Quote:
Originally posted by 67 ss
The listings I have on injectors for bigblocks are 80lb/hr or 90 lb/hr. Can you see color markings on the top of the injector? Blue/black is 80 lb/hr and dark red/dark blue is 90 lb/hr.
Hope this helps.

Chris
The color markings on mine are pink and purple.
JokerRS is offline vBGarage Page   Reply With Quote
Old 03-22-2004, 10:23 AM   #8
TGO Supporter
 
Ronny's Avatar
 
Join Date: Mar 2003
Location: wisconsin
Posts: 6,664

Classifieds Rating: (0)

i would say they are sam as mine. i have not yet looked up part # but will and run delco search.
Ronny is offline vBGarage Page   Reply With Quote
Old 03-22-2004, 04:25 PM   #9
Senior Member
 
Join Date: Nov 2000
Location: Alburnett,Iowa,USA
Posts: 542
Car: 92RS
Engine: 357
Transmission: 700R4

Classifieds Rating: (0)

The injector PN is 17104288.
JokerRS is offline vBGarage Page   Reply With Quote
Old 03-22-2004, 10:28 PM   #10
Senior Member
 
Join Date: Jan 2002
Location: Red Deer, Canada
Posts: 812
Car: 89 Shortbox
Engine: 350 Vortec
Transmission: 700r4

Classifieds Rating: (0)

17104288 is a 305 injector. I know I have a set, I have even verified this threw a guy on Ebay who sells injectors, he looked it up for me. Someone bought your TBI unit, kept the BB injectors, put there stock ones in and sold the unit to you. The 17104288's are total crap, I kick them around in my garage for fun, cause thats all there good for.
__________________
1989 1500 Truck SB, 350 ci, 750 cfm Performer (RIP ported 454 tbi), Comp 222/226 @ .050 with .500 lift 114 deg LSA, 10.7 to 1 CR, Ported Vortecs, Flow Tech Headers, Edelbrock Air-Gap RPM Intake, 1.6 rollers, Custom UVEPROM, Walbro 255 pump, MSD Ignition, Dual 3" Dynomax, 3.73 posi, 700r4, Stage 2 Shift Kit, Vette Servo, cheap 3000 stall.

Shooting for high 13's (mid 13's corrected)

2001 Dodge Cummins 3/4 SLT Leather,Loaded, 39" mudders, 525hp & 1200 ft/lbs.

2001 ZR2 Blazer Loaded, K& N and chip. 31" mudders.

1989 Shortbox
Low C1500 is offline vBGarage Page   Reply With Quote
Old 03-23-2004, 12:51 PM   #11
TGO Supporter
 
Ronny's Avatar
 
Join Date: Mar 2003
Location: wisconsin
Posts: 6,664

Classifieds Rating: (0)

i purchased a new 454 TB on ebay as well. that number is the one that was in my TB as well. fortunately i have a set of 90's in car already so can swap them into 454 TB. what i find of interest is that 94-95 GM truck runs at 26-32 lbs. it was said a while back those are 68 lbs but cannot find a hit on delco part search for 17104288. if they are 68 lbs it is possible they can meet fuel requirements of the 454 based upon that higher FP.. C1500 are you certain they are 305 injectors? no where can that part # be identified. i thought the 305's have a diff part # and it is well known.
Ronny is offline vBGarage Page   Reply With Quote
Old 03-23-2004, 07:21 PM   #12
Senior Member
 
Join Date: Jan 2002
Location: Red Deer, Canada
Posts: 812
Car: 89 Shortbox
Engine: 350 Vortec
Transmission: 700r4

Classifieds Rating: (0)

I been through this before,


Those injectors are about 45lb/hr. I know this because to make them run in my truck I had to set the base pulse width (bpw) to like 160. With my 55 lb/hr 350 injectors my bpw was 122. This was back when I only ran 16 psi fuel pressure.

Long story short I had to crank the pulse witdh to get the motor to run normal (monitoring via scanner). Originally I had set the bpw thinking that the injectors in question were 80 lb/hr, the motor would barely start , then die.
Low C1500 is offline vBGarage Page   Reply With Quote
Old 03-24-2004, 07:19 AM   #13
Moderator
 
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 14,327
Car: check
Engine: check
Transmission: check

Classifieds Rating: (1)

TurboCity lists the pink/purple 1994/1995 7.4l injector at 46#/hr. At 30 psi that is about 72#/hr. Which is correct for a BBC.

RBob.
RBob is offline vBGarage Page   Reply With Quote
Old 03-24-2004, 08:50 AM   #14
Junior Member
 
Join Date: Jan 2004
Location: Charlotte, NC
Posts: 6
Car: POS

Classifieds Rating: (0)
Send a message via AIM to got2gozoom
Do you want to sell your 454 TBI casting ????
got2gozoom is offline vBGarage Page   Reply With Quote
Old 03-24-2004, 09:23 AM   #15
TGO Supporter
 
Ronny's Avatar
 
Join Date: Mar 2003
Location: wisconsin
Posts: 6,664

Classifieds Rating: (0)

mine is going in next week weather permitting. ok finally i got the info on this injector. now i have 2 to sell. apparently for reasons unk GM went to higher pressure for 454 engine. fuel amangement possiibly better? that requires a high pressure fuel pump. i think my 85 vette tpi pump puts out 19 lbs b4 the injector and i regulated down to 12lbs. anyone that buys the 94-94 454 TB should be aware of this. lucky for me i am running the 90 lbs currently. they are about $100 each if i recall. i do have a set of used 65 lbs and a xram plenum with (2) 2.00 inch single TB's for sale with above injectors. x ram plenum is square bore bolt pattern. replaces the crossfire manifold.
Ronny is offline vBGarage Page   Reply With Quote
Old 03-24-2004, 08:16 PM   #16
Senior Member
 
Join Date: Nov 2000
Location: Alburnett,Iowa,USA
Posts: 542
Car: 92RS
Engine: 357
Transmission: 700R4

Classifieds Rating: (0)

Quote:
Originally posted by got2gozoom
Do you want to sell your 454 TBI casting ????
I'll probably hang on to it for a while.
JokerRS is offline vBGarage Page   Reply With Quote
Old 03-24-2004, 08:48 PM   #17
Senior Member
 
Join Date: Feb 2003
Posts: 785
Car: 90 454SS
Engine: 454 TBI
Transmission: TH400

Classifieds Rating: (1)

Quote:
Originally posted by Ronny
apparently for reasons unk GM went to higher pressure for 454 engine. fuel amangement possiibly better?
To thwart vapor lock.
va454ss is offline vBGarage Page   Reply With Quote
Old 03-24-2004, 08:48 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > TBI

Tags
17104288, 1994, 355, 454, 46, 80, 80lbhr, 94, big, block, fuel, identify, injector, injectors, lb, tbi
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 06:38 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details