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  1. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Cleaned up the heads before heading to work today. Seems like a lot of buildup for 90K miles. Another takeaway - When I pulled the water pump I took my leaf blower & blew the water out of the block so when I pulled the heads no water went into the cylinders.
  2. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Less than 1 minute after the harmonic balancer puller arrived I had the harmonic balancer off. Cleaned the carbon off the pistons. Tried for a few minutes to remove the timing chain without loosening the oil pump like the video I watched but didn't get anywhere. Haven't given up but I did...
  3. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    I've rebuilt & did cam swaps on many engine over the last 50 years but this is my 1st LS/LT experience so I watched many videos. Key learnings: leave the injectors attached to the head if a head rebuild isn't being done, those 2 flex belts can be removed easily without cutting, it's possible...
  4. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Yes you can leave the oil pan alone & that is my plan. I watched 2 videos where the oil pan was left alone & cam replaced. Tricky but doable. I'm up for a challenge. As for the puller my 1973 Camaro, 2014 SS Sedan & 2018 Yukon are all 6.2L LS/LT powered which need a special puller so gives me...
  5. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Still waiting on my cam & a harmonic balancer puller so progress has been slow. Pulled the water pump & the head that had the lifter failure. All rollers on the lifters are good as well as the cam lobes. The bad lifter separated. Harmonic balancer bolt has been removed with the help of a 5...
  6. MrMonte

    There are just some days I wish I didn't turn wrenches

    I got certified at a GM training center that also gave me high school & college credits back in the 70s but ended up working on semiconductor equipment after graduating college and still do. Vehicles are my hobby. Recently was gifted a 73 Camaro minus front clip and have started a full build...
  7. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    My son bought a 1999 Suburban for $1,000 that had 2 month old tires & tags that cost over $1,000. Cosmetically it needed some help but runs & drives great. My grandson wanted to help so yesterday he help me wet sand the tired paint with 1000 grit, buff then polish. The water spots must of...
  8. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Only spent 2hrs on the Yukon today. Was determined to get that intake cover off then bagged/labeled all bolts removed so far then sprayed exhausted bolts since they tend to break. Removed all pushrods & rocker arms which all look good. That wiring bundle attached to the back of the intake...
  9. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    I ordered the GM 12664572 cam. This is the same cam in the Escalade V. This cam will go nicely with the future supercharger install.
  10. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Thanks for the inputs. I already have GM LS7 lifters, trays, head bolts & gaskets. Plus the AFM oil plugs. When I 1st looked at the AFM delete I saw conflicting info about if cam needed to be replaced. The ones that said it did didn't explain why but they were the ones selling the cams...
  11. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    I already have the AFM turned off in my tune so the LS7 lifters & plugs should be all I need from what I've read. If I wanted a big cam I would have to delete the VVT but I'm leaving the stock cam in assuming it is still good.
  12. MrMonte

    AFM lifter fail on my 2018 Yukon Denali

    Driving home from work my 2018 Yukon Denali with 89K miles was running great. Took off rather quickly from a stop light then shortly after check engine light came on with #7 misfire plus general misfire. Idles a little rough, no ticking that I can hear and exhaust seems to be fuel rich. Pulled...
  13. MrMonte

    #7 misfire + general misfire. AFM lifter fail?

    Driving home from work my 2018 Yukon Denali with 89K miles was running great. Took off rather quickly from a stop light then shortly after check engine light came on with #7 misfire plus general misfire. Idles a little rough, no ticking that I can hear and exhaust seems to be fuel rich...
  14. MrMonte

    73 Camaro

    No engine, fenders, radiator support or any bolts. Sold the trans & fuel injection that came with it for $500. I'm going with non RS front with split bumper, burnt orange with painted black rally strips like this pic.
  15. MrMonte

    AFM FOR MY 2015 Yukon Denali

    Turned off AFM on my 2018 Yukon 6.2L 10 speed 30K miles ago & at 87K so far. Mobil 1 oil changes every 5K. My Son's 2015 Yukon 6.2L 6 speed had AFM failure at 110K which is not a cheap fix. I get better mileage with AFM turned off than when it was turned on. Last 400+ mile road trip I avg...
  16. MrMonte

    73 Camaro

    The inside was a mouse house for 20 years but is all clean now.
  17. MrMonte

    73 Camaro

    More picks. I'm also building a 1:18 scale version of my project.
  18. MrMonte

    73 Camaro

    20+ years ago I was looking for my Son's 1st car. Found this clean 73 Camaro but it didn't have AC so a friend bought it. He took it apart to make a race car then quickly gave up so the Camaro sat in a field for 20 years before he gave the remains to me a few months ago. I striped it down to...
  19. MrMonte

    MILEAGE POLL

    The key to good mpg numbers is using your brakes as little as possible. Lots of elevation changes here in Oregon. I used to have 140 mile daily commute when I lived on the coast and had to drive over the coastal range. I would watch people gas hard going up & a sea of red lights riding their...
  20. MrMonte

    MILEAGE POLL

    WOW, what are you driving? I reset my trip after installing my tune & turning off AFM over 25K miles ago so including winter warm up, city driving & lots of running idle I'm still over 20mpg avg.
  21. MrMonte

    MILEAGE POLL

    Now that's timing, I made a roundtrip to Bend OR today with Elevation swing of over 4,000ft up then back down. I have AFM turned off so V8 100%, cruised around 75-80 except some traffic spots and got 25.7mpg. Last trip was 26.9mpg on my 2018 Yukon Denali 6.2L 10 speed with 86K miles on it.
  22. MrMonte

    Applied CQUARTZ UK 3.0 Ceramic Coating on my Yukon

    Been almost 6 month since I applied the ceramic. Just got back from a 3 week 4,200 mile vacation so did a quick 10 min wash & dry at 9pm. So easy to wash & dry with the ceramic. Pic was right after washing.
  23. MrMonte

    Autocross in a 'Burb

    We managed a 12.9 out of our stock 2000 WS6 TA. Haven't taken the Yukon out yet but she pulls pretty hard in AWD with only a tune on the 6.2L 10 speed.
  24. MrMonte

    2019 Tahoe lifter failure at 47000 miles

    Installed a tune 25k miles ago & turned off the AFM on my 2018 Yukon Denail 6.2L 10 speed. My mileage is 20.2mpg & my best tank ~500 miles was 26.9 mpg.
  25. MrMonte

    Autocross in a 'Burb

    Playing on a track is fun for sure. I go to the Ridge in Washington, it's a 2.5 mile track. Haven't taken my Yukon (6.2L 10 speed) to a track yet but living in Oregon I have many curvy backroads I drive on daily. The combo of massive Hellwig swaybars & the Belltech 2"(spindle) front &...

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