ToxicWS6

so this isnt quite fbody related but is LS related so here it goes ...lol

just got a decent 2003 Chevrolet 2500hd that i plan on using as my DD and rarely tow vehicle for my trans am and k5 blazer, well i plan on doing a 6.0L swap to the k5 blazer sometime this summer as the 350 is dying, and also isnt LS XD, but i also wanted to originally get a 4L80e for the blazer also, well after getting this silverado i was wondering...

how hard would it be to take the 4L80e out of my 2003 silverado and put it in my k5 blazer and buy a 6L80e to swap into my silverado for better MPG and all?

i have HP tuners and etc, is it basically a swap and retune for new tranny or no?

thanks!

the_merv

iTrader: (88)

Need an E38 PCM to control that 6spd Auto. Just get another 80E and keep your truck together. The 80E is tougher anyways.

cobalt964

80e is a better trans

ToxicWS6

maybe im wrong, why im asking, not challenging but, dont the 6l80Es come in the 07-08+ 2500-3500hd trucks? thought they where the same as the 4l80E strength wise just a 6 speed not a 4

thanks for the responses though, yeah its still up in the air, just something i thought about if it was worth it or not

ls1nova71

iTrader: (4)

WAAAAY more work than you're thinking. The older gen3 PMC won't controll it like was said earlier. To swap it over would be a lot more work than it would be worth for a very slight MPG gain.

ToxicWS6

yeah, was hoping it be a quick swap but : / lol.
thanks guys!