I guess it's not a new engine, but it seems like one to me. I am in the process of pulling my LB7 out of my '03 and will be putting an '05 LLY with low miles in. While I have the LLY on the trailer I'd like to do any mods I can since it is easier to access. After buying the engine, I don't have a large budget but could spend around $1000 or so. So far I've thought of the basics such as EGR Blocker, PCV re-route, and possibly a lift pump. Are there other things out there that I should do to help with towing as well as fuel economy. I'm not building the transmission, so I don't want to go overboard on power. I have also thought about having someone tune it with EFI, or is there a better option out there?

Thanks for any help.

-Brandon

I would replace the exhaust downpipe from the turbo, the passenger and drive side intercooler tubes.

I would install a LBZ mp now as well, will be much easier off the truck.

Head studs!!!

head studs!!!





x 1,000,000!

Depending on how many miles on the motor, and its on a trailer...just bite the bullet and do the headgaskets with studs then you never have to even think about it again.

Moved to other performance discussion

Depending on how many miles on the motor, and its on a trailer...just bite the bullet and do the headgaskets with studs then you never have to even think about it again.

yep

Completely delete the egr cooler and put an lb7 up pipe on. Would be a good time to put lbz intake cups on and the y bridge. This will make it easier and cleaner to work on the motor given the instance you have to go back in later for maintenance. I second and third new headgaskets and studs. Lbz mp for sure and diamond eye downpipe, port the fuel rail fittings,pcv reroute.

Plus if you do the HG's, then you can clean the intake tract and remove the years and miles of PCV and EGR being sucked back into the engine.