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  1. R

    97 3500\350 5 speed is a dog.

    If you get a blackbear tune leave an update here if you would. Been thinking about one for my 5 speed 350.
  2. R

    97 3500\350 5 speed is a dog.

    Yeah, if it’s a 3500 it came with a 4.10 but my book lists a 4.56 option as well. And the MW3 standard transmission (Only standard available on heavy duty) is effectively a 4 speed/3speed w/overdrive. I have a 3/4 ton 350 with MW3 and 3.73 rear end. I suggest not using first gear if you’ve...
  3. R

    High mileage motor thicker oil?

    The owners manual for the 5.7 Vortec lists two oils. The factory recommendation is 5w-30 but lists 10w-30 as an option for warmer climates. Mine is higher mileage as well so I like to run a bit thicker so I go with the 10w-30. But you can also run a bottle of Lucas high mileage with either oil...
  4. R

    k2500 8600gvrw trucks tow ratings have gotta be under rated

    Also, you need to look at tongue weight. A properly loaded trailer should have about 10% of its weight on the tongue. So a 5000 lb load would result in only 500 lbs on your truck.
  5. R

    k2500 8600gvrw trucks tow ratings have gotta be under rated

    GVWR is a measure of what the chassis can physically hold (safely, and for warranty purposes.) So if you cross the scales at 8600 lbs (truck, cargo, you, everything) then you’re maxed out. You can still be overloaded if you have too much distributed unevenly between the axles (see axle weight...
  6. R

    Best way to prep and paint rusty frame.

    Moved the car to spray. The others are parts cars. And there is still some on the ground but now it just looks like nicer asphalt. Lol. But yeah, if you’re gonna spray it get good equipment. Respirator etc. And it’s a b**** to spray. Very thick. Splattered our of the gun but then laid out...
  7. R

    Best way to prep and paint rusty frame.

    I don’t know about up north but two years after using por15 on my frame here in Texas it’s still good. Very pleased. Just scrubbed with scotchbrite and cleaned with wax and grease remover. Sprayed por15 (terrible process, probably got cancer instantly) and it looks great. Hard as a rock.
  8. R

    454. Vortec max miles you would go?

    Hope I'm not bothering anyone replying to an old post but I'll add my two cents. My grandma bought an 01 Suburban brand new and its still going strong at 260k. I know its the smaller V8 but it is a Vortec. It made me a believer. I bought a 96 5.7 at 153k and daily drive it: 40k in 2 years and no...
  9. R

    Stock Rims or Nah??

    What year is the Yukon?
  10. R

    When my GMT400 isn't enough...

    I didn’t read all the replies so pardon any redundancy. I agree though with something I read: being a ‘95 it’s power is trash compared with the vortec. My ‘96 350 has more power than my grandad’s ‘95 454. And the vortec’s are ridiculously reliable. The 8.1’s in the gmt800 are awesome but have...
  11. R

    Z71 Question

    I was curious and a google search didn’t yield any useful results. Does anyone know the first year Z71 was available on 3/4 ton and 1 tons? Has it been available on them as long as the 1/2 ton? My dream truck, basically a unicorn, is a four door, single rear wheel 1 ton (4x4 or Z71) with a 454...
  12. R

    Vortec 454/7.4 Supercharger

    I recently bought a 1999 3500 Crew Cab with the 7.4. It has 321,xxx miles on it but runs like a champ. I suspect sometime fairly soon I'll have to rebuild it. When I do I'd like to add a supercharger. I recently caught the bug for these superchargers after seeing some online that had the Whipple...

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