Hey guys, I have done a TBSS intake swap on my 2007 Vmax silverado. I swapped the throttle body and injectors as well so the truck has TBSS intake, injectors and throttle body. My question is on my injectors I would like to know the specifics on them if possible. What year model and lbs they are as I did not see or know the vehicle that they came off of.

Thanks

 

Should be from 2007-2009 Flex fuel trucks, they are 36lb/hr injectors.

The data will have to be modified from the GEN 4 format into the GEN 3 format to work.

The part number is right on the injector, 12594512.

 

Thanks, I’m thinking about changing them out but wasn’t sure what I had exactly. I’m also thinking about going with a bigger injector when I do to give myself room for more power in the future. Can I run say a set of 80lbs on it like it is? The truck really just has a mild cam but I would eventually like to procharge it.

 

You can run some 120# injectors if you want. Just needs to be tuned for them.

 

Only run as big of an injector as you need.

The later 6.0's and 6.2's use 50 and 52lb/hr injectors, those are plenty big for a lot of power. They are cheap as well.

 

https://www.rockauto.com/en/moreinfo...=1887186&jsn=3

 

Will they fit the 07-09 intake and fuel rail in place of the 36lbs or will I need some of the spacers? They look kind of short.

 

Follow up question guys… what are the top numbers on injectors above the part number? I got a new set of injectors but the numbers above the part number are different. Original injectors are 0630 781 26 followed by the 12594512 part number but as you can see in the attached picture the top numbers are different. Anyone know what those mean?