Getting a little fancy... 1987 V10

[frotosride]

The 03-06 had LQ9. 02 had the LQ4.

'02 is when the heads went from cast iron to aluminum. The LQ9 and LQ4 were offered in '02 and up specific "high end" vehicles like escalades also SS Silverado and other "Vortex Max" trucks starting in '03.

[rumblebox]

The 03-06 had LQ9. 02 had the LQ4.

'02 is when the heads went from cast iron to aluminum. The LQ9 and LQ4 were offered in '02 and up specific "high end" vehicles like escalades also SS Silverado and other "Vortex Max" trucks starting in '03.

Wrong. The 99-00 LQ4 was the only gen3 to ever have iron heads. 01+ are all aluminum-headed.

01-02 Denalis and Escalades had the LQ4

The LQ9 didnt exist until the 03 model year SS, denali, escalade, and 04-06 VHO/VMAX trucks.

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[frotosride]

It's alright. We all get learned once in a while.

Well they are packed and ready to ship! Unfortunately, so are my pistons as well. As everyone should do, I was inspecting my new parts and noticed a Nick just below the #2 ringland one one piston. Doesn't sound to bad but it put a crown in the ring land and we all knows that won't work.
I'm in the parts cleaning process now and stripping the block. The machine shop wants $130 to hot tank the block.. Looks like I fixed my pressure washer just in time. Also $355 to balance. I may have to bite the bullet on that one!
Anyone in the South East GA or North Florida area know or a reputable machine shop that may rival my current pricing?

[frotosride]

Either way it's an LQ4 out of an '03 denali vine 'U' and if you looked at the pics the pistons give it away!
I am glad you can Google though!

[rumblebox]

Either way it's an LQ4 out of an '03 denali vine 'U' and if you looked at the pics the pistons give it away!
I am glad you can Google though!

No googling necessary here. the LS motors are my first love, and I've never personally seen an LQ4 in an 03 Denali. I have seen exceptions of LQ9's in 2002s with cable throttle bodies, but not the other way around until now. And yes, the pistons and cam are the only difference. Same 317 heads.

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[frotosride]

Either way it's an LQ4 out of an '03 denali vine 'U' and if you looked at the pics the pistons give it away!
I am glad you can Google though!

No googling necessary here. the LS motors are my first love, and I've never personally seen an LQ4 in an 03 Denali. I have seen exceptions of LQ9's in 2002s with cable throttle bodies, but not the other way around until now.

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This one is originally DBW but I had to switch to connect my TV cable until I get my 4l80e or 6l80e

[rumblebox]

FYI, this was my stock longblock LQ4 with a donkey dick cam, FAST 100 intake, and 1 7/8 headers with a X pipe.

https://youtu.be/aI7LONdWc6E

https://youtu.be/jnA9mVUywFI

The cam was really too big for the 9.4:1 compression, but the 4500 stall made up for it. I eventually switched to LS3 heads/intake with a smaller cam.

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[rumblebox]

Either way it's an LQ4 out of an '03 denali vine 'U' and if you looked at the pics the pistons give it away!
I am glad you can Google though!

No googling necessary here. the LS motors are my first love, and I've never personally seen an LQ4 in an 03 Denali. I have seen exceptions of LQ9's in 2002s with cable throttle bodies, but not the other way around until now.

Sent from my SAMSUNG-SM-G870A using Tapatalk

This one is originally DBW but I had to switch to connect my TV cable until I get my 4l80e or 6l80e

If you can adapt to DBW, it's easier to tune and control torque tip-in(if necessary).

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[frotosride]

Oh I know this to be a fact as well but the only way would be to adapt the TV cable to my DBW pedal and that's not a fun project so I decided DBC for now. I still have everything for DBW including the tranny harness still attached, for the future tranny swap. I really wish I could afford the keep the DBW but now everything is running fine with the PCM tune and it's still the original PCM so a few setting changes and I'm back to an 'E' transmission.

[frotosride]

So I went all out and got me a parts washer...well I made one from things I had lying around the garage.

[LTZ C20]

Redneckery at its finest!

[frotosride]

Proof is in the shinny stuff... all I did was pull these out and wipe them down..

[frotosride]

Bores are. Leaned up next will be cleaning the block and swapping pistons then reassembly. Hopefully in the next couple of weeks I can have the rotating assembly torqued in its final resting place at a very minimum. The hone I used was a little expensive but as we all know good tools produce good results and great tools great results.

[frotosride]

Despite the differential issue in the other post the 6.0L project isn't on the back burner even though I have made very little progress. I now have access to an ultrasonic sink at work. I knew it was there but didn't know if it worked so I filled it and flipped the breakers and bam! So the heads are locked up at work for cleaning and a small amount of porting, mostly just gasket matching and blending the short sides plus getting rid of that slope in the top of the cathedrals. I will likely lap the valves in as well then put it all in the sink. I need a press!!!!

[frotosride]

It's been a while but I have made progress. The most annoying part of all of it is I have had all the parts to complete the rebuild for a long time just lacking time. But so far I found a great machine shop to swap my pistons, install cam bearings and polish the crank. As of now I got the a complete long block plus paint.