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Posted: 12/12/2020 11:37:36 AM EDT
Random ask, but I'm looking for a decent tuner in the vally for a GM gen IV LS.

I'm about to drop a mild cam in my tahoe...
Link Posted: 12/13/2020 12:43:47 AM EDT
When my LS swap is done I plan to take it to Premier Performance for tuning. They have a chassis dyno and are probably one of if not the best LS tuners in Salt lake county
Link Posted: 12/28/2020 1:04:11 AM EDT
Yep, Premier is the place to go.

They got their start with Ford 4.6's and Mustangs, but pretty much do it all.

Brock and Heath are good dudes and run a quality shop.
Link Posted: 6/16/2021 12:29:55 PM EDT
Thanks, I'm near the end of the build and getting close to needing a tuner.

If anyone is interested in a stripped 5.3 block that has a nice flat deck but might need a little cylinder work, i have what you need.
08 marked gen 4.


I ended up going with a brand new gm 6.0 block, reusing the crank, and rods from the 5.3.
I tried copying the config from an 09 trail blazer ss, since its 6.0, and uses the 799 heads that my 5.3 had.

Ended up with a crazy high compression ratio unless i ran a .055 quench.


Eyeballing some AFR heads to keep the cathedral port intake, but to get a larger chamber size.
since the whole idea was low end powa...



First time actually rebuilding an engine.
(I don't really count high-school experiences, or small engines).

Sure wish i did some actual calculations... lol
I would have totally sprung for some 8cc valve reliefs when ordering pistons.

Adventure!

Link Posted: 6/18/2021 8:39:45 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Gibbles:
Thanks, I'm near the end of the build and getting close to needing a tuner.

If anyone is interested in a stripped 5.3 block that has a nice flat deck but might need a little cylinder work, i have what you need.
08 marked gen 4.


I ended up going with a brand new gm 6.0 block, reusing the crank, and rods from the 5.3.
I tried copying the config from an 09 trail blazer ss, since its 6.0, and uses the 799 heads that my 5.3 had.

Ended up with a crazy high compression ratio unless i ran a .055 quench.


Eyeballing some AFR heads to keep the cathedral port intake, but to get a larger chamber size.
since the whole idea was low end powa...



First time actually rebuilding an engine.
(I don't really count high-school experiences, or small engines).

Sure wish i did some actual calculations... lol
I would have totally sprung for some 8cc valve reliefs when ordering pistons.

Adventure!

View Quote

Are you doing the engine rebuild yourself, or do you have someone doing it for you? I've got a 6.0L in a 2012 Caprice that I'm wanting to cam swap and delete the DOD (and a bit more power). It is my daily driver, so not looking for crazy high lift stuff or a stall converter.
Link Posted: 6/23/2021 12:46:24 AM EDT
[Last Edit: 6/23/2021 1:12:49 AM EDT by Gibbles]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Sartorius:

Are you doing the engine rebuild yourself, or do you have someone doing it for you? I've got a 6.0L in a 2012 Caprice that I'm wanting to cam swap and delete the DOD (and a bit more power). It is my daily driver, so not looking for crazy high lift stuff or a stall converter.
View Quote


Doing it my self.
Its a "bucket list" item for me.

I can also tune a bit.
Dod delete is easy via the tune.
Hardest part is to kill the VLOM sensors, but still easy to turn off.

I started this project as a dod delete since i needed to replace the oil pump anyways.
Turns out i waited too long with the reduced oil pressure.


I detailed the fk out of this engine build, tons of waiting and measuring to get things perfect.

Eta: if you pull the engine, do the converter.
Known weakness on the 6 speeds.
I did a mostly stock converter, but with all of the upgrades, including a two disc lockup clutch.

Nearly 700 bucks, but worthwhile upgrade.

6l80 has two main failure points.
Converter, and the pressure switches in the valve body.
I already rebuilt the switches and did a shift kit.

Page Hometown » Utah
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