Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

39 lb injectors big enough?

Thread Tools
 
Search this Thread
 
Old 10-09-2009, 12:41 PM
  #1  
TECH Apprentice
Thread Starter
iTrader: (5)
 
blue by you's Avatar
 
Join Date: Sep 2003
Location: Stoughton, Wisconsin
Posts: 358
Likes: 0
Received 0 Likes on 0 Posts

Default 39 lb injectors big enough?

Building a 408 N/A when I get home from Iraq with ported L92's and am using a stock L76 manifold with a Holley 90mm TB that I bought used. It still has the factory 39 pounders and I'm wondering if they will be enough to feed it or not. Could you guys let me know if anyone else has used these and if they were big enough? If not, what size has been used before? Thanks!
Old 10-09-2009, 02:20 PM
  #2  
10 Second Club
iTrader: (15)
 
DrkPhx's Avatar
 
Join Date: Nov 2001
Location: St. Michael, MN.
Posts: 4,519
Likes: 0
Received 0 Likes on 0 Posts

Default

There's a formula that calculates the injector requirements based on hp goals, maybe do a search on here to find it. I use the Delphi 42-lb injectors for my setup and the injector duty cycle is at 75-77% at wot.
Old 10-09-2009, 02:38 PM
  #3  
9 Second Club
iTrader: (23)
 
tektrans's Avatar
 
Join Date: Nov 2003
Posts: 3,377
Likes: 0
Received 0 Likes on 0 Posts

Default

39's should be fine unless it's a solid roller as long as your N/A.
When you tune it you'll be able to see if they go static or not but I don't think they will.




All times are GMT -5. The time now is 12:40 PM.