Originally Posted by RLHMARINES
I am not sure but it could be possible although the press release only mentions the Z06 and the ZR1 as the only other production engines to receive this treatment.
You're absolutely correct... I noticed that, too, after I posted. Hmm... Regardless - thanks for posting this information!!! It's definately a plus for ZL1 guys
05 Hummer H2 SUV on OEM Air Ride
Forged 11.1:1 408 LQ4 (K1 crank & rods; Mahle pistons)/CPP LS3 CNC heads/BTR Stage IV LS3 cam and valvetrain/home ported L92 intake manifold/ported 90mm TB/custom Volant CAI/mid-length headers/AFE dual 3" CB/Corvette Servo/el cheapo lift/Cognito UCAs/e'fan conversion/aluminum radiator/Moroso catchcan/HPTuners by me/LED exterior lighting/Pioneer AVH-5600BHS/Pioneer GM-9601/2-Pioneer TS-W310D4/Obcon Labyrinth dual-12 box/lots of other stuff