Originally Posted by Smitty's '04 GTO

Thanks for the feedback guys. I should've guessed there would be minor differences in front drivetrain between 4WD & AWD. Good, too, to know that the factory achieved lower front stance using the 2500 keys - now I gotta figure out how to go about swapping those out if I should choose to go that route...

The rear I think I've got figured out. I've got Belltech shackles and 2wd U-bolts enroute. That will enable some adjustability between 3" - 4" Drop. I did the Belltech shackles on my last truck, an '02 Sierra in 2WD, and am familiar with them and enjoyed the results...

In front, I think I'll begin by decranking the T-bars all the way and see what that gets me... If not suffice, I'll try swapping in the 2500 keys and adjust from there. Anybody have a source for the Belltech drop bumpstops? So far, my searches are fruitless. If not, perhaps I'll drop by the dealership and look into whether there's a difference in bumpstops between Silvy SS and the Z71's (seems to me there would have to be, wouldn't there?)

I'd considered using the Belltech 2" spindles, but I have a nice set of 16" Firestone Winterforce tires mounted on steelies that I plan to use in season...

FWIW, I just took delivery of a set of Michelin Cross Terrain SUV's in 275/65-17 that I plan to mount on the factory aluminum 17's along with this drop. I know they're a little taller profile than most folks here like, but they should ride nice and they're shorter than the factory 70 series while filling the wheel well nicely along with a 2/3 or a 3/4 Drop...

Anyway, if anybody else has input, feel free to post, otherwise I'll update later on with results and perhaps pics...


Thunder, I like the results with your truck - looks like you and I share the same taste, an appreciation for dropped 4x4's and the new GTO!

Originally Posted by Smitty's '04 GTO

GM part #15002781, $11.18 pc @ gmpartsdirect.

Originally Posted by 006rcsb

you order 4, i just did this to my regular cab.