Biggest streetable Injectors

The Kansan

New member
Aug 30, 2013
179
0
0
Topeka, KS
Im in the process of building a motor and i was curious what some of you built motor guys are running for injectors. Id like to be able to drive it as smoke free as possible and occasionally tow a trailer. Where do you think 65% over injectors would get somebody horsepower wise?
 

TROJAN366

Gold Rush
Jan 13, 2012
2,474
1
38
MASS
I have 100s and they are clean as a whistle on my small tunes. I would think LB7 65% overs would put you over 900hp if you pushed them.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,690
5,847
113
Phoenix Az
Would 2 stock pumps hold rail pressure with 100 overs?

depends on the pulse width you want to run


45% over injectors have made 1000rwhp track proven with enough turbo. no reason 60/65% overs cant if you have the right turbos.

i run 100% overs on my dd/tow rig. they are not as clean as stock injectors but they are no worse than the LB7 45% overs i use to run (have a LLY top end now). its going to take tuning time to get them dialed in just right but many tuners have dealt with 100% overs in many different configs now that they should have good bases to go with.
 

TROJAN366

Gold Rush
Jan 13, 2012
2,474
1
38
MASS
Would 2 stock pumps hold rail pressure with 100 overs?

I have an LBZ pump and an LLY pump with 100s and it doesn't have any low rail issues. I am pushing them with big pulse width too. 1125hp at the wheels on a 90* day.
 

zakkb787

<that’s not me...
Sep 29, 2014
2,340
52
48
Granite Falls NC
Just looking at what injectors I'll need to make 4 digits with an s475 and what kinda pumps. Was thinking 100s and another SuperSport pump. Didn't mean to derail the thread:hug:
 

gmduramax

Shits broke
Jun 12, 2008
4,076
250
83
Nor cal
Just looking at what injectors I'll need to make 4 digits with an s475 and what kinda pumps. Was thinking 100s and another SuperSport pump. Didn't mean to derail the thread:hug:

I'd go at least 150's. two healthy stock pumps will do 1000
 

WolfLMM

Making Chips
Nov 21, 2006
4,005
26
48
38
AL
I have 200s on a single 12mm, no problems holding 29k rail pressure. A little smokey on the street till you learn how to drive with big injectors.
 

Wikid

Machinist and Know things
Oct 21, 2016
88
0
6
Texas
I am running 100s. Runs good but they haze and tend to smoke a good bit more than when i had 60s. It does take a different style of driving to not completely smoke out the road.
 

TheDirty06

New member
Sep 28, 2014
115
0
0
Horton, KS
I'm gonna be running 100 overs and dual LBZ pumps whenever my motor is done. Hopefully it'll be done in a couple weeks.Ill come run around Topeka when it's done lol