PerformanceTrucks.net Forums

Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Injector Question

Thread Tools
 
Search this Thread
 
Old 03-16-2007, 11:56 AM
  #1  
TECH Regular
Thread Starter
iTrader: (4)
 
Powerhouse's Avatar
 
Join Date: Oct 2005
Posts: 442
Likes: 0
Received 0 Likes on 0 Posts
Default Injector Question
Will stock LS1 injectors work with my 99' 5.3? If so, will it handle a 225/225 591' 112lsa, headers, exhaust and intake?

btw: they are 28.8lb injectors
Powerhouse is offline  
Reply Like
Old 03-16-2007, 12:08 PM
  #2  
TECH Junkie
iTrader: (30)
 
12secSS's Avatar
 
Join Date: Nov 2001
Posts: 3,728
Received 1 Like on 1 Post
Default
No, the LS1 injector connectors are different from truck applications. But you can use 8.1L injectors, which are 30lbs (IIRC).
12secSS is offline  
Reply Like
Old 03-16-2007, 12:14 PM
  #3  
TECH Regular
iTrader: (8)
 
99/5.3w/hips's Avatar
 
Join Date: Feb 2006
Location: CA
Posts: 464
Likes: 0
Received 0 Likes on 0 Posts
Default
just buy some injector pigtails, summit part number MSD-2400 and wire up the 28#s. Bluecajun did it and I will be doing the same.
99/5.3w/hips is offline  
Reply Like
Old 03-16-2007, 12:18 PM
  #4  
TECH Regular
Thread Starter
iTrader: (4)
 
Powerhouse's Avatar
 
Join Date: Oct 2005
Posts: 442
Likes: 0
Received 0 Likes on 0 Posts
Default
I can't find any 8.1 injectors.. I guess I could try the pigtail idea
Powerhouse is offline  
Reply Like
Old 03-16-2007, 12:41 PM
  #5  
High on diesel fumes
iTrader: (70)
 
thunder550's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 12,658
Likes: 0
Received 3 Likes on 3 Posts
Default
The 8.1L marine injectors have the Multec plugs just like the truck injectors - they are a direct swap and are 42#/hr.
thunder550 is offline  
Reply Like
Old 03-16-2007, 01:01 PM
  #6  
TECH Regular
Thread Starter
iTrader: (4)
 
Powerhouse's Avatar
 
Join Date: Oct 2005
Posts: 442
Likes: 0
Received 0 Likes on 0 Posts
Default
Where can I buy some?
Powerhouse is offline  
Reply Like
Old 03-16-2007, 02:31 PM
  #7  
TECH Fanatic
iTrader: (6)
 
04BlackSilverado's Avatar
 
Join Date: Jan 2004
Location: New England
Posts: 1,444
Likes: 0
Received 0 Likes on 0 Posts
Default
I have a set of 8.1 32# injectors, direct swap, no modifications.

Just need to tune for the increased flow.
04BlackSilverado is offline  
Reply Like

Trending Topics

Old 03-16-2007, 02:56 PM
  #8  
TECH Veteran
iTrader: (24)
 
RandomHero's Avatar
 
Join Date: Jun 2005
Location: Austin,TX Name:Mark
Posts: 4,787
Likes: 0
Received 1 Like on 1 Post
Default
I just bought a set of 8.1L injectors for $26 plus shipping on ebay. Just look around and wait for good deals.
RandomHero is offline  
Reply Like
Old 03-16-2007, 03:48 PM
  #9  
TECH Addict
iTrader: (13)
 
Join Date: Aug 2005
Location: In the Sticks of Virginia
Posts: 2,267
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by Powerhouse
I can't find any 8.1 injectors.. I guess I could try the pigtail idea
Hey dude, call your local Dealerships Parts Dept. and ask for a price on this part # 12574927. Those are the 8.1 Injectors.

They are $143.00 each......I try to sell em' for $99.99 each.
Last edited by Torque_Wrench; 03-16-2007 at 03:48 PM. Reason: more info
Torque_Wrench is offline  
Reply Like
Old 03-16-2007, 04:18 PM
  #10  
TECH Junkie
 
Colby 04's Avatar
 
Join Date: Jul 2005
Location: Lake Conroe Texas
Posts: 3,205
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by Torque_Wrench
Hey dude, call your local Dealerships Parts Dept. and ask for a price on this part # 12574927. Those are the 8.1 Injectors.

They are $143.00 each......I try to sell em' for $99.99 each.

$800 for the set??
Colby 04 is offline  
Reply Like



Advanced Search
Quick Reply: Injector Question


Reply Closed Thread Share

All times are GMT -5. The time now is 03:05 AM.