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View Full Version : What size injector's ?

Firebird68corona
07-20-2017, 01:33 PM
Im currently re-doing my lq4 from carburetor to efi. I cam across a lsa Supercharger for cheap and rebuilt, So I went with that. My problem is I'm not sure how big to with injector's. Or will stock ones be enough

Set up
Lq4
L92 heads
Cam specs.
112° love separation
Intake. Exhaust
Duration. 281. 283
Valve lift. 0.571. 0.573

I'm ether going to do a 18% or 14% overdrive gilmer drive from LSXconcepts

Any information would be greatly appreciated https://uploads.tapatalk-cdn.com/20170720/a574f43b032c3e739e7488d11d1345c6.jpg

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Tinker
07-20-2017, 05:31 PM
[QUOTE=Firebird68corona;662587]

Set up
Lq4
L92 heads
Cam specs.
112° love separation
Intake. Exhaust
Duration. 281. 283
Valve lift. 0.571. 0.573

I could not resist it, lord I tried, but what is love separation? Sounds like something I tried many years ago and cost me half of everything.(except the car thank God)
:topic:
Firebird68corona
07-20-2017, 07:45 PM
Hahaha sorry I posted this on my phone. Auto correct is trying to have it's own way. I'm a free man so no woman is taking anything

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nicks67ca
07-21-2017, 04:39 AM
From what I've seen once you move past a stock LSA with 5 or 10% overdrive you will max out the factory injectors.

Either

DeatschWerks 90LBS are plug and play for the LSA or Injector Dynamics 850.

The image looks like you already have an overdrive (smaller) snout pulley. I would become familiar with this chart. you want to make sure you don't over spin the blower.

http://www.lingenfelter.com/forum_lingenfelter/filedata/fetch?id=3806&d=1345335831

You will need a good fuel pump set up. Something like the CTS-V twin pump with a Vaporworks controller.
Firebird68corona
07-21-2017, 01:17 PM
Right on I appreciate it, looks like I should be good with the 18% overdrive. I've looked into the id850's and apparently they stopped making them and replaced them with id1050's. I'll take a look at the deatschwerks. Thanks again. I'm a little ways out before I get to the fuel pump won't be on the road till next summer

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