Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

H3 3.5l Cylinder Head and tools

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Old Jun 30, 2022 | 02:01 PM
  #1  
chemistrygeek's Avatar
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From: Maryville, TN
Default H3 3.5l Cylinder Head and tools

Selling a 'kit' of sorts I assembled to replace the cylinder head in my 2006 Hummer H3 with the 3.5l L52 (I5) engine. I had high leakdown rates due to leaking valves and was going to replace the head. I assembled the parts and tools in early 2021 but was rear ended in June 2021 and the truck was totaled before I got a chance to install. Cleaning out my garage and trying to get these parts into a good and loving home.

Asking $950 for everything, prices I paid are in parentheses (total of ~$1150 IIRC)

Located near Knoxville, TN.

Parts included:
- re-manufactured cylinder head ($625)
- Head gasket set (FelPro HS 26336 PT; $160)
- Valve cover gasket set (Felpro VS 50703R; $25)
- Cylinder head bolts (Felpro ES 71334; $67)
- Exhaust packing seal (Felpro 61348; $13)

Specialty tools (needed to perform on-vehicle service as per the TSB):
- Gear retainer EN-48464 (Freedom Racing; $110)
- Camshaft holder J-44221 (Freedom Racing; $24)
- Flywheel holder EN-46547 (Freedom Racing; $96)
- printouts of service procedures, TSBs, and forum posts detailing the process

Bonus:
- Ignition coil (AC-Delco BSC1395)

To the best of my knowledge the only thing you’ll still need is a torque angle meter/gauge. GM used torque to yield head bolts, so if you want to do the job right you can’t use a standard torque wrench. You may also want to pre-purchase a head bolt extractor set in case you wring off a bolt when removing the old head... Not going to lie this doesn't seem to be an easy repair but it can be done. I think (but can’t guarantee- I’m not a mechanic) this will fit the L52 3.5l engine as found in Colorado, Canyon, and H3 from 2004 to 2006. It’s up to you to determine if it will work in your application. This appears to have the 2 cam sensors.

Thanks!!






 
Old Jun 30, 2022 | 05:51 PM
  #2  
hummerz's Avatar
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Originally Posted by chemistrygeek
Specialty tools (needed to perform on-vehicle service as per the TSB):
- Gear retainer EN-48464 (Freedom Racing; $110)
- Camshaft holder J-44221 (Freedom Racing; $24)
- Flywheel holder EN-46547 (Freedom Racing; $96)

Those are NOT KENT-MOORE tools. I'm willing to purchase at the right price. How much for all 3 shipped to 44130?
 
Old Jun 30, 2022 | 07:17 PM
  #3  
chemistrygeek's Avatar
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From: Maryville, TN
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I got them from Freedom Racing, I just checked and I think they must be their "stallion" brand. I guess they market these as an 'alternate' to the "OEM" brand that is more expensive. My apologies, I'm not a professional mechanic. I paid $230 for them, current cost appears to be $243. I'll take 15% off as a "restocking fee" of sorts, so with that I'll take $195. UPS Ground estimate to your ZIP is $15 so $210 total.
 
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