Unfortunately I just traded my 07 H3x after 16 years of enjoyable driving. Best vehicle I ever owned and am regretting trading it. Should have kept it just for the winter driving in Buffalo, NY.
Thanks. I was wondering if anyone has thought about building a new billet block like they do for the eco inline 4 for high compression. Allows you too run different pistons. Could change the game for an inline 5 build in a hummer. Although it’s not cheap too do. It would keep the build too it’s roots.
I want to change my '06 3.5L to a 5.3L but I keep running into post of people saying that the cost is too much it would be better to just buy one with a 5.3, what's your take? Also, what issues did you run into changing yours over? Did you have to change out the PCM and the ECU/ECM? Thanks.
If a factory V8 had been available here I definitely would have bought one rather than the conversion. Had to remap the ECU and modify the wiring harness.
Did you happen to be datalogging when the piston tops broke? If so, was there any knock retard at the time? I am curious about possible detonation contributing to your piston failure. Also, was your tuner using wideband sensors or the stock O2 sensors? Lastly, what octane fuel were you running at the time? I feel this dark desire to try turbo'ing mine but know it may end with similar issues. 🤓 Thanks for sharing on your experience!
Not at the time the piston tops broke. Stock 02 sensors. 98 octane. All data showed it should not have happened with the tune it had. The interesting part is both failures where on Piston # 5. Apparently # 5 is a common issue even on stock motors however I’m yet to see any explanation on what is the cause. In the end I just didn’t want to continue with it. In theory they should do fine with a Turbo as there quite a few supercharged i5’s doing just fine. Sorry I’m not more help.
@@hsvh3hummer942 Some good fuel! If I end up taking a whack at it, I'll try the wideband sensors. I heard from a tuner youtuber it's pretty dangerous to tune turbos above ~40% TPS without them. How was the power when you went off road with the turbo? Thank you for the info on the #5 cylinder and interesting point with supercharged I5's! I appreciate your help!
Hugh help, than you. I have a 2010 Adventure, blown engine rebuilt. 5 minutes in huge rattle noise, pulled engine left balance shaft destroyed. Rebuilder claims I did not flush oil cooler. Balance shaft is discontinued . Thinking LS swap but impossible to find information about requirements. .?
Hi Jody. I had already done a solid axle swap prior. However if you look at the H3 Alpha running a 5.3 V8 from factory on fairly much the same driveline it gives you and indication that it’s ok
@@hsvh3hummer942 so really only the front axle wouldn't be happy with it? Wouldn't it just be better to get the 5.3 alpha adventure package with the lower geared t-case and higher axle ratio? How does yours like the 4:56 gears unless you're running something else. Sorry just wondering how far I wanna go with my 07 base verses just getting the alpha adventure that's all setup.
@@jodygrady9733 we don’t have the Alpha available here. That said I believe the 5.3 runs 4.1 diff ratio. The Tcase you are referring to is the adventer 4.03:1. I run 5.13 diff ratio and the 4.03:1 Tcase. In short if a Alpha is available to you it’s a great choice. Most of the 09-10 models have a cast iron front diff case rather than the weaker aluminium cases in previous models that is a known week point.
