Recent content by ButchM
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Proportioning valve vs. load sensing valve
Mats These are out of the service manual for an 86. They may be of some help. Butch- ButchM
- Post #16
- Forum: Suspension, Steering & Brakes
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Passing CA Smog help - High HCs
The cats must be up to temp before they operate (change HC and CO to H2O and CO2) and normal operating temp also ensures the choke is fully open, and a fully warmed up engine does a better job of burning all the fuel it can. A stuck partially closed choke will drive HC up a bunch. You probably...- ButchM
- Post #76
- Forum: Carb Fuel Systems
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Transfer Case Brace
Gil, Way late to this party but I hope it helps. I recall that the bellhousing bolts were always 3/8-16 but not sure now. Maybe they are close enough as to be interchangeable. This is from a Chevrolet parts department catalog from back in the early 90's (when they still used them). I believe...- ButchM
- Post #21
- Forum: Transfer Case
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transfer case
Bob, (speaking to 1 ton square bodies,) The NP205 transfer case was used up until 1991. Automatic transmissions were THM400 ("Turbo" 400 or Turbo Hydramatic 400) until 1990. 1991 was the first year for the new 4L80E. The trucks were C/K 30 thru 1986. Starting in 1987, the square bodies...- ButchM
- Post #40
- Forum: Transmission & Transfer Case
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Lifted Dually Suburban wheels/tires?
The Alcos are/were the same dimensions as the factory steel wheels. I still have a spare wheel in its original box if the numbers would be of any help.- ButchM
- Post #34
- Forum: Wheels and Tires
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Lifted Dually Suburban wheels/tires?
Garth/Svein I put 285/75-16s with factory size Alcoa's on my K30 many years ago, way way early 90's. I've put well over 200k miles on this combo before I parked it in 2011. The truck has a 2 1/2" lift and 1 1/2" spacers on the rear. The truck sits flat with no load, it had 3+ yds of gravel in...- ButchM
- Post #18
- Forum: Wheels and Tires
