CalSgt
Full Access Member
- Joined
- Oct 3, 2021
- Posts
- 1,700
- Reaction score
- 3,763
- Location
- CA
- First Name
- Casey
- Truck Year
- 1980
- Truck Model
- Chevy K-10 Custom Deluxe
- Engine Size
- 350
What year?Aluminum? Are you sure? My wife’s GMC Yukon XL Denali package has every option they had and it has the 6.2 but it’s a cast iron block. Over 400 factory horsepower.
My wife’s ‘07 Yukon Denali had the L92 - 403 hp 417 lb ft. ALL Aluminum gen IV engine based off the LS3 block casting.
Her ‘17 Yukon XL Denali has the L86 - 420 hp 460 lb ft. All aluminum gen V engine based off the new LT1.
Sooo… you made me question the validity of my statement from earlier, I could swear it was aluminum based on the look of it. I went and wiggled under the wife’s Yukon with a light and a magnet and it’s definitely an aluminum block. I was tripping out for a moment because from the top side the magnet was sticking to the deck near the edge of the head. It’s near impossible to get a clean view and straight shot to the block from the top. I figured out it was sticking to the head gasket where it protrudes out from under the cylinder head.