Hello all. i know this info is out there already but i keep finding conflicting stories. I have a gen III 5.3 from a 2000 taho with turbo/heads/cam. I'm about to place an order for Siemens/Deka 80LB injectors. trying to figure out if they will fit under the stock fuel rails.

Will I need spacers?
Will I need a adapter for wiring?

If not can someone recommend an injector in the ~$400 price range to support 650-700 hp?

Thanks!

 

I had a set under my stock FF rail. I had to have rail spacers. I got the ICT billet spacer kit.

However,

There isn't great data for them. In other words, they're a bastard and a half to tune. If you have good, reliable data then it's going to be easier.

They're really geared for Mustang's. That's where all the reliable data is.

 

i had someone recomend the fast 60LB injectors. but i thought they are LS3 style which is way shorter than my truck injectors

 

Deatschwerks 32D-00-0060-8. They flow 72lbs/hr. Direct drop in. Reworked stock injectors. Great data available.

 

Sounds like a winning ticket right there