View Full Version : LS2 SS Trailblazer, mods?


HottLS1Z
11-13-2008, 10:47 AM
Hey guys not sure where to post this since there is no section specific for this vehicle but i'll try here. I'm getting a 06-07 TBSS here shortly and want to know what the LS2 responds well too. I want to keep stock internals but would like to at least have it in the 11's on spray. Is this realistic? Will ne tne awd version so traction wont be a problem. Low 13's to mid 12's on motor would be nice. I've owned many LS1 fbodies does the LS2 respond just as well to mods?

JCattSS
11-13-2008, 01:36 PM
First thing I would do is a tune and RPM trans/converter. If you plan on spraying it at all you will need it the stock trans esp. in awd is the weak link. From there its pretty much like modding any other LS vehicle. All the bolt ons & trans/converter will get you square in the 12's with an awd. The 2wd is a good bit quicker but being in the midwest mines meant to drive all year.

HottLS1Z
11-13-2008, 02:24 PM
Thats the thing is it's gonna be my dd and have the 100k warranty i know a stall will void it, the spray if something happens can be easily removed, so whats the best i could get this thing doin on a stock converter and not voidiny my warranty? I figure like full exhaust with lt's will just void the exhaust system warrany right? Also how weak is the trans in these, I had hoped GM learned there lesson with how weak stock a4's are in the fbody and used somethin better in these. Are they 4L80's in them? And yes will be awd winter sucks here by chitown.

Zzzzz
11-13-2008, 03:40 PM
4L70. You'll read about people having tranny problems. I personally know quite a few running with bolt on's / reduced TM without any issues.

HottLS1Z
11-13-2008, 05:50 PM
4L70. You'll read about people having tranny problems. I personally know quite a few running with bolt on's / reduced TM without any issues.

TM? You mean reduced Timing for spray or Torque Managment?

JCattSS
11-13-2008, 11:53 PM
Simple bolt ons you should be OK but if you are going to spray an awd the trans is on borrowed time. I would suggest if you are worried about the warranty buy an extra ecm/tcm to swap out and keep the stock ones stock. 06 modules are a little more $$ but 07 & up are cheap and plentiful. Also 06 did not come with the 100k warranty but maybe you could get that from the dealer anyway. There is no real difference in the 06-09. Yes TM is torque management. I would be careful with headers and warranty work. Probably just do cai, catback & tune. With just a tune an awd should run higher 13's when its cooler out. Spray it with 100-150 you will be square in the 12's but like I said the trans is hit or miss there has be A LOT of them break with minimal mods especially awd's. Other than that rest of the drivetrain/motor is pretty stout. I bought mine new in april 06 and am very happy with it. Favorite vehicle I ever had but having a bunch of mustangs before you would expect that ;)

HottLS1Z
11-14-2008, 12:03 AM
Simple bolt ons you should be OK but if you are going to spray an awd the trans is on borrowed time. I would suggest if you are worried about the warranty buy an extra ecm/tcm to swap out and keep the stock ones stock. 06 modules are a little more $$ but 07 & up are cheap and plentiful. Also 06 did not come with the 100k warranty but maybe you could get that from the dealer anyway. There is no real difference in the 06-09. Yes TM is torque management. I would be careful with headers and warranty work. Probably just do cai, catback & tune. With just a tune an awd should run higher 13's when its cooler out. Spray it with 100-150 you will be square in the 12's but like I said the trans is hit or miss there has be A LOT of them break with minimal mods especially awd's. Other than that rest of the drivetrain/motor is pretty stout. I bought mine new in april 06 and am very happy with it. Favorite vehicle I ever had but having a bunch of mustangs before you would expect that ;)

So your saying referring to the ecm best bet is just get a whole nother computer to swap in it if something goes wrong? Whats this "tcm"? And yeah all GM certified used vehicles come with a 4yr48K mile bumper to bumber and 6YR 100K pwr train warranty. One im lookin at is an 06 AWD 3SS pkg with 22K on the clock so should be good for a while. Thanks for the info on these, havin a hard time findin ppl around here that own em I just hope I'm not going to regret selling my Z and getting it, but I need a new dd and something a little more friendly for messin around on the street lol camaro has gotten too wild every time I get on it im doin 120+ lol I figure if I can get this tbss in the 12's at min it should be good enough to hold its oen aginst the common turbo ricer or mustang here and there haha:D Just on a side note what kind of econemy is realistic? I averaged 18-20 on the real time reader on the dash on the highway and anywhere from 12-16 in the city, but the average was like 13.6 when I first got in for the test drive before I reset it. Whats realistic for say crusin down the free way at 70??

JCattSS
11-14-2008, 01:43 AM
I would just get another set of modules, ecm (engine) and tcm (trans) have them tuned and keep the stock ones stock just in case.There is some debate whether the dealer can tell if the truck has been tuned and if so they can try to void your warranty. Supposedly even if it has been flashed back to stock they can tell. Real world with just a tune & catback I was getting better than the rated 14/17+ as long as I was good. Now with the mods I have in town maybe 10 and still 17+ on the highway at over 70. Right now is a good time to buy one the prices have gotten pretty reasonable and if gas stays cheap...

green28
11-14-2008, 03:19 AM
I see you're not too far down the road from me, JCattSS, maybe 2 hours. Have you driven your AWD in the snow, either stock or modded, and how does a SUV with all that power handle the midwest winters? I'm semi interested in getting one, but it would have to be an AWD version since myself or my wife would DD it.

Juiced2000SS
11-14-2008, 05:48 AM
Now with the mods I have in town maybe 10
10? Ouch! LOL, I am getting right at 13.9 whenever I do the math. K&N, cat back, and a tune. I have to say, the TBSS is the worst vehicle I have ever owned as far as mpg goes but is sure is a blast to drive :D :burn:

JCattSS
11-14-2008, 01:24 PM
Juiced2000SS- You are just used to driving that camaro and you are pushing that poor TBSS too hard to keep up! Before the cam/converter it did fairly decent in town. But a 3400 stall and 900 rpm idle kinda kills it.

I see you're not too far down the road from me, JCattSS, maybe 2 hours. Have you driven your AWD in the snow, either stock or modded, and how does a SUV with all that power handle the midwest winters? I'm semi interested in getting one, but it would have to be an AWD version since myself or my wife would DD it.

I does great in the snow this will be my 3rd winter driving it. It has traction control and stablitrak which help out quite a bit. Turn them off and you can do killer doughnuts! I do run 17 inch snows mainly just to keep the stock rims nice. I got a converter, headers,cam etc. and there is no negative impact on winter driving.

EPP
11-15-2008, 11:31 AM
Hey guys not sure where to post this since there is no section specific for this vehicle but i'll try here. I'm getting a 06-07 TBSS here shortly and want to know what the LS2 responds well too. I want to keep stock internals but would like to at least have it in the 11's on spray. Is this realistic? Will ne tne awd version so traction wont be a problem. Low 13's to mid 12's on motor would be nice. I've owned many LS1 fbodies does the LS2 respond just as well to mods?

Headers and a low restriction exhaust system make a heck of a difference with the LS2 engines.

LSWONGTO
11-15-2008, 01:53 PM
When I put on my kooks it was like night and day!!! I wouldn't be to concerned with the warranty unless you are prone to breaking stuff. So buy the TBSS then buy headers and a cai.