Hello
I’m did a LS swap in my 64 Chevelle it’s a stock 04 5.3 from a Silverado and have been trying to tune it with hp tuners and realized when I bought the used ls1 intake complete it has lt1 injectors ( part #17121068) so I’m looking for some stock injectors so I can get all the data or can y’all suggest a brand of a good set of new injectors with data
Thanks for any help

 

Go to Rock Auto and get the correct injectors for your engine. Just look up 04 Silverado 1500 w/ 5.3L engine.

 

I’m running the ls1 intake because the truck intake didn’t fit under the hood

 

Then get some 99-2000 LS1 (Camaro or Corvertte) injectors. They will be close to the flow rate of the 04 LM7 injectors.

 

not at 142 a piece

 

You can get GM Reman injectors for $36.79 each including $9 core charge at Rock Auto. These are likely better than the cheaper offbrand ones.

 

I just found a set of LS 1 injectors part #12561462 , I’m dropping them off tomorrow to get cleaned and flowed now what’s the best website for specs on these injectors so I can put it in HP Tuners
Thanks for any help

 

They are 30#/hr @ 58psi
I just googled the part #.

 

Thanks, I found that type of data I was looking for data tables I can paste to HP Tuners or maybe I just need to find a tune file for a 02 z06 and copy paste that data

 

If they are actually LS1 injectors, there are 26 and 28lbs version depending on the year. You should be able to find a stock F body tune in the HPT repository and copy the information over.

 

Thanks for your help and yep a senior tuner at the HP Tuners site helped me out and did that for me after I gave him the part number for the injectors I found , Friday I dropped the injectors off to get cleand and flowed once I get them installed Ill download his tune and go from there
Thanks again for your help