what size come stock on the:

5.3
5.7
6.0

also while im at it...are there any differences in the coil packs?

 

Some say the truck coil packs are a bt stronger. I havent seen anyone show any real data to back that up. All of them will work on all the engines if thats what you are worried about.

 

They will all work on each other.. :0 I have also heard that the trucks packs are bigger, still will work on any lsx

 

ill just use my truck coils to be safe then...what about the stock injector sizes on all of the motor sizes?

 

I believe they are all the same size as well...

 

i thought the 5.3 was like 24, the 6.0 around 27 and the ls1 ????NO CLUE

 

theres two different coil packs..

 

yeah i know trucks have heatsinks on the bottom for some reason? not sure if they are different, or if some just have sinks on them for some reason

 

5.3 and 6.0 injectors are the same size

Your injectors will be fine for the LS1, you may need to upgrade to 8.1s with the cam

 

the truck coils will not mount to the ls1 coil bracket. had this problem recently. also the truck coils will not wire into the ls1 coil harness. if you wanna use your truck coils/brackets/harness on your ls1 itll work as long as you use the whole harness and bracket and all the coils.

injector size for the ls1 is the same too I think. i'll check my book when I get home