Injectors for Turbo.

[coyotes33]

I currently have a fresh rebuilt stock ls1 with the truck intake and accessories in my 84. I'm planing to throw in a single turbo and about 7 psi. What 48/60# fuel injectors would be a direct fit or very minimal changes to the harness?

[BR3W CITY]

Is it actually an LS1, or do you mean just an ls-motor (4.8-6.2?) It depends if you originally installed the Delphi truck-style injectors (stock on the fuel rail with the truck intake), or if you are running the car-style injectors (tall skinny ones with EV plugs on them).

If you have truck injectors, the only real option is Marine 8.1's or go custom. If you switch to the car-style plugs (or already have them), you can pickup something like the F*rd SVO injector/cobra injector, or any 1 of the 100's of custom one's available. The Bosch EV-style plugs are super-common and almost any injector can be made to fit as long as its top and bottom o-ring fitments are correct.

[coyotes33]

Its a 5.7 and I did use the stock 5.3 injectors, rail and intake.

[wgeyer88]

There are plug-and-play for truck motors, gen III anyway.

http://www.deatschwerks.com/products...lverado-sierra

Search Amazon by the part number, you can find them cheaper there.

[BR3W CITY]

Originally Posted by coyotes33

Its a 5.7 and I did use the stock 5.3 injectors, rail and intake.

Your setup for the truck style injectors then, like the ones posted in wgeyers post. The 48s or 60s would be fine for what it sounds like you want to do. If you end up looking for the 8.1 injector, make sure its a true MARINE 8.1, not the junkyard pullout 8.1 injector.

If you end up with BIG goals (to the point where you would outpace a 60lb injector), then you'll probably end up switching to car injectors because the amount and variety of vehicles using that style injector means way more options cheaper.

[coyotes33]

Originally Posted by wgeyer88

There are plug-and-play for truck motors, gen III anyway.

http://www.deatschwerks.com/products...lverado-sierra

Search Amazon by the part number, you can find them cheaper there.

Thanks for the link.

[coyotes33]

Originally Posted by BR3W CITY

Your setup for the truck style injectors then, like the ones posted in wgeyers post. The 48s or 60s would be fine for what it sounds like you want to do. If you end up looking for the 8.1 injector, make sure its a true MARINE 8.1, not the junkyard pullout 8.1 injector.

If you end up with BIG goals (to the point where you would outpace a 60lb injector), then you'll probably end up switching to car injectors because the amount and variety of vehicles using that style injector means way more options cheaper.

I wouldn't mind going with the car injectors, I just need to figure out what modifications I need to make on the rails and clips.

[BR3W CITY]

Originally Posted by coyotes33

I wouldn't mind going with the car injectors, I just need to figure out what modifications I need to make on the rails and clips.

EV style pigtails, and space the fuel rail up higher (nylon spacers from hardware store work). Super easy, extremely common.

[coyotes33]

Will the pigtails work with the ls7 injectors? I found a few sets over in ls1tech.

[Wasted Income]

Just buy a set of the LS1 length (car length) Siemens 60s and be done with it.

Those were enough to support an S400 at 12 psi on a 6.0 on one of my builds, but not so big that they idle like **** on gasoline.

Snip the injector pigtails, solder the "car" style on, which can be snagged from about any port fuel injected GM car (FWD grand prix, lumina, monte, caddys, etc.) and solder them in place, with some shrink tube over your splices. Like an hour of work.

Then you just have to space your fuel rail up. I don't remember the exact distance, but it's out there on the interweb somewhere.