I am 95% sure I am buying 07 Sierra with the LBZ and am wondering what upgrades work best with this engine and any problems that may be common with the truck: electrical, computer, tranny, etc. Any info would be much appreciated. Thank you.

Alright the truck is in the garage awaiting the info from the experts thanks.

Cool deal, let's hear some details about the truck. Tell us what you want/expect from the truck and I'm sure someone can help point you in the right direction as far as what mods to do. I have the hot juice on mine and I like it, but depending on what you're after you might want something better.

94Matt's Sig:

2008 Dodge Cummins Quad cab, long bed, 4x4, manual. Herd bumper, 5" exhaust, egr/dpf delete, Black Maxx

2007 Chevy Duramax Crew cab, long bed, 4x4, auto. Ali-arc bumper, Edge hot juice/attitude

The Fodge, a 1993 Ford 4x4 reg cab, 03 Cummins common rail, with southbend FE and NV4500

Bunch of gassers

the lbz has the benefit of factory upgrades to correct the problems found in the earlier models lb7 and lly. you will also get the 6sp tranny for lower cruising rpm's. good mods to make the truck better are the exhaust (get rid of the kitty), tuner, pvc reroute will help keep the trucks intake system clean. factory intake will support up to 500hp with no problem so no need there. but if you swap, be careful with the k&n style filters that require oil to be added because the oil does wierd stuff to the maf sensor.

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oh yea, forgot to mention the egr blocker plate.

jbrown1132's Sig:

2005 cc 4x4 sb duramax & allison
modified kodiac mouth piece, egr blocked, pvc reroute
quad 2, autometer gauges, 4" ss turbo back with 5" tip.
i've been known to engauge in chemical warfare
265's with green keys turn all the way down.

the Allison will only take bout 100hp over stock so unless your ready to put $3000+ into your allison i wouldnt tune it too hard yet, a Transgo Jr. kit from suncoast will help it hold about 100hp or a little more, but not much for very long or reliably

BriteWhiteRam's Sig:

2006 Chevrolet Silverado LT 4x4 Crew, LBZ/ALLISON, PPE airbox mod, EGR blocker
TOTALED:2005 Dodge Ram 3500 Laramie 4x4 quadcab, Cummins/modded 48re, edge/juice/attitude

would like to get more mpg and some power. not looking to spend money on the trans right now so keep the power upgrades in the medium range. Thanks.

i have a bully dog for sale you can pm if you are interested

2500HeavyDuty's Sig: