How Many different coil packs
 

how many different coil packs are there for the 99+ trucks. i know there is one with the silver fins on the top and i got one right here in front of me without the fins. also i got another set of coils in yesterday that looks totally like nothing ive ever seen on a truck. im not sure if it is a truck coil or not waiting on the guy to get back to me.

i believe that all the lsx's use the same coil, and give next to nothing for hp

no there are what I believe 4 different designs for the lsx engine....the round one on ls1/6's, the square ones on ls1'6's, the truck coils, and the new ones for the ls2. I dont know if the ls7's use a different coil, and about the ones with fins...can't say I've seen them....

the ones with the fins on it are the truck ones I know cause they are like mine
http://i23.photobucket.com/albums/b3...1/DSC00686.jpg

Ok, I take that back....did a little quick research @ work.....there are 5 different coil design so far....The trucks all use the same coil 99-present, including the new tahoes, sclades...the camaro through 02 and vette through 04 use the same coils, and the gtos and cts-vs uses the same coils. Now your thinking where did I get 5? the trucks and gtos each have 2 different types....a mitsubishi coil and a delphi coil. and the ones with the heat sinks are the mitsu truck coils.

Delphi is round, mitsu is square.
here are the part numbers -

Truck-99-present -
12558693 (mitsubishi)
10457730 (delphi)
Gto/Cts-v/vette/Impala, Monte Carlo, Grand Prix w/5.3 05-present -
12570616 (mitsu)
12573190 (delphi)
Camaro, corvette, gto, cts-v up to '04 -
12558948 (only one!)

Maybe a sticky or something??

Mine arent square looking though and they have the heat sinks:confused:

i stand corrected, thanks for that tid bit. ps why is there so many diferent styles,

Those would be the Delphi units.

then there must be 4 different truck coils? the fin ones in both mitsubishi and delphi and the ones without fins in delphi and mitsubishi. im working on a project and im just trying to figure out what all coil packs i need to get ahold of to take measurements off of.

well, maybe they changed the design, the part numbers for these coils change at least once for each of them, so there is either a supplier, price, design, or application change. bChalk it up to what you want, they all work the same and bolt up!!!