I ordered a LQ9 that I am going to put in place of the well worn 5.3 in my 06 Yukon. The 317s are coming off for a set of CNC 243s with a 5 angle valve job, a ported Fast LSXRT with a 102mm TB, and a custom made 4" intake with a LS7 MAF that will put the filter around the turn signal and fog light area. Similar to the 4" Fenderwell intake the Trailblazer SS runs. Cam is a 224/228 .600 .600 113 Pat G spec for me, 11.1 CR, 1 3/4" headers I already have but if there is a decent enough gain I might consider 1 7/8" but with the ORY and the 4" Flowmaster merge to a Duramax exhaust with a straight through Borla muffler I don't think I'll need the bigger headers. Transmission will be built to RPM Level 6 specs with a Yank SS3600 and 4.11 gears on a 29" tall tire. Any guesses on what it should it make roughly and run at the track? And what material and diameter driveshaft I should order? I don't plan on running a DR on it but who knows I might take the rears off my RCSB it the Yukon spins a ton at the track.

 

430rwhp

 

its going to be better than stock and more fun on the street but you will be very disappointed at the track . also I would do some 4.30 or 4.11 gears to help but you will need about 300 more hp to be a little fast

 

It only shows to weigh around 5k lbs if 2wd. So if race weight if 5200 ish I think you may be pleasantly surprised. Probably low 8's I'm thinking but very low 8's to mid 8's pretty certain if she hooks with a great tune.