Fuel Injectors
Thread Starter
Instructor
Joined: Sep 2004
Posts: 122
Likes: 0
From: Salt Lake City UT
Fuel Injectors
i'm looking for a place to buy some cheap, efficeint injectors. the vette has got 180,000 on her with stock injectors. i think its time to buy some new ones. what is the stock lbs for a 1991 corvette
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
I just replaced injectors in my 86 vette and I went with 24lbs. I think stock is 22lbs, but if you have any HP modifications I would go with the 24lbs. Alot of people on here just hate Accel injectors, but I haven't had any problems. Hope this helps! 
Racer
Joined: Aug 2004
Posts: 379
Likes: 170
From: Buffalo Grove IL
I'd guesstimate that half the people replacing injectors on stock motors go with the 21lb/hr injectors, and the other half go with the 24lb/hr injectors. The ECM should be able to compensate for either injector in closesd-loop mode, but I think I remember a few people dropping their fuel pressure to get the BLM numbers back up to the 128 range.
I went with the 21lb/hr injectors and bumped the fuel pressure up to 48psi. It's still a tad on the lean side (BLM values around 135) but it runs ducky.
I got my injectors from http://www.fiveomotorsport.com, well actually through their eBay auction which were a few dollars cheaper than what they quoted on the website proper (at least they were 18 months ago or so).
Great service, fast responses to emails, and got my injectors in about 2 days.
Good luck!
Ben
I went with the 21lb/hr injectors and bumped the fuel pressure up to 48psi. It's still a tad on the lean side (BLM values around 135) but it runs ducky.
I got my injectors from http://www.fiveomotorsport.com, well actually through their eBay auction which were a few dollars cheaper than what they quoted on the website proper (at least they were 18 months ago or so).
Great service, fast responses to emails, and got my injectors in about 2 days.
Good luck!
Ben
Team Owner
Joined: Jan 2003
Posts: 20,315
Likes: 245
From: Summerland B.C. Canada
Originally Posted by bmalec
I'd guesstimate that half the people replacing injectors on stock motors go with the 21lb/hr injectors, and the other half go with the 24lb/hr injectors. The ECM should be able to compensate for either injector in closesd-loop mode, but I think I remember a few people dropping their fuel pressure to get the BLM numbers back up to the 128 range.
I went with the 21lb/hr injectors and bumped the fuel pressure up to 48psi. It's still a tad on the lean side (BLM values around 135) but it runs ducky.
I got my injectors from http://www.fiveomotorsport.com, well actually through their eBay auction which were a few dollars cheaper than what they quoted on the website proper (at least they were 18 months ago or so).
Great service, fast responses to emails, and got my injectors in about 2 days.
Good luck!
Ben
I went with the 21lb/hr injectors and bumped the fuel pressure up to 48psi. It's still a tad on the lean side (BLM values around 135) but it runs ducky.
I got my injectors from http://www.fiveomotorsport.com, well actually through their eBay auction which were a few dollars cheaper than what they quoted on the website proper (at least they were 18 months ago or so).
Great service, fast responses to emails, and got my injectors in about 2 days.
Good luck!
Ben
Five 0
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Instructor
Joined: Oct 2005
Posts: 139
Likes: 0
From: Creve Coeur Missouri
Ive got DENSO F55E 24# @ 43.5 PSI , they are working great on stock '89 L98 . Using AFPR @38 PSI . $185 shipped from INECTORS4U ! Take-outs from 97-99 Cobra 2v-4.6 . Flow matched and new O-rings too! Look good , satin aluminum body with blue tops. FIVE-O sells them as well.
, satin aluminum body with blue tops. FIVE-O sells them as well.