Bilster

iTrader: (21)

Doing a mild 5.3 build with 10.5:1 compression, Elliot Lloyd ported 5.3 heads and a Comp Cams 200/212 .527/.510 117 cam. This is a truck motor that's going to see some mild towing. I'm wondering if the stock 5.3 injectors are upto the task. I have access to a set of 28.8 LS1 injectors. Will these fit the stock 5.3 intake or do I have to have a set of LS1 rails? What is the stock 5.3 injector size? I would like to send the ECM in for a tune and need to work out the injector size before then.

NemeSS

iTrader: (127)

Prolly can reuse the 5.3 injectors. Or can use the truck version 42lb. From 8.1 trucks. I think the stock lq4 injectors can be used also. Idk if there any different from the 5.3s though
I have few sets of lq4/9 injectors if interested

parks450

iTrader: (17)

Id do a set of ls2 injectors from a gto or something which are 36lb.

Bilster

iTrader: (21)

Can I put them in using the Vortec injector rails?

LilJayV10

iTrader: (39)

28.8 should be more than enough. They are good to around 450rwhp. I have 430rwhp and I am about 85% duty cycle.

Bilster

iTrader: (21)

I figured the 28.8s would be a good choice but I need to know if they can be installed on the truck intake without mods to the rail.

LilJayV10

iTrader: (39)

As long as the truck rail you have uses the taller EV1 injectors they should work fine.

Bilster

iTrader: (21)

Thanks!