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  1. iflyfisher

    Light white smoke and backfire at high RPM or under load

    @rusted nuts, I'll do some more digging. Wish I knew more. @PrairieDrifter, Good advice. I will check the valves and compression over the next day or two and let you know what I find. The truck was purchased by my Dad new back in 1973. He was fanatical about oil changes and other general...
  2. iflyfisher

    Light white smoke and backfire at high RPM or under load

    Getting a ‘73 K20 running that had been parked since 2005. I rebuilt the carb, replaced the plugs and ignition wires, checked the points and condenser, and have the timing set for 4 BTDC. I also changed the oil, drained the old fuel, and ran fresh gas through the pump to push out any old gas...
  3. iflyfisher

    K20 Wheel/Tire Confirmation

    Thanks @Shorty81, @Craig 85, @bucket. That is exactly what I needed! I agree, Craig, I wouldn't want my wheels and tires tucked any more under the well. I had hoped to go with the US Wheel as they are already powder coated. I'll have some added cost with the Vintiques to powder coat but looks...
  4. iflyfisher

    K20 Wheel/Tire Confirmation

    Hey Folks, I am a bit concerned whether 285/75 R16 would fit on my stock K20 using the US Wheel 16x8 wheel with +19MM of offset and backspace of 5.25". I likely won't run tires much wider, so I could mount them on the US Wheel 16x7.5, which has +13MM of offset and 4.5" of backspace. This latter...
  5. iflyfisher

    K20 Wheel/Tire Confirmation

    Indeed. But getting wheels and good tires on will be a good start. Based on research, I think 285/75’s will fit my truck. I’m a little concerned as the 8” version of the rims has +19mm of offset and 5.25” of back space.
  6. iflyfisher

    K20 Wheel/Tire Confirmation

    After days of searching, I have given up on using the 16.5 wheels. I didn't like any of the tires I found that would remotely work with the wheel and my truck. I still want a white steel wheel, so I will likely go with a U.S. Wheel OE (Series 664) or similar in a 16x8. That wheel will give me...
  7. iflyfisher

    K20 Wheel/Tire Confirmation

    Thanks @bucket. Seems like every decision re this truck takes so much time to research. Great to have the internet and resources so available :)
  8. iflyfisher

    Retrofitting a 79-87 bed on a 73

    @bluex, Thanks for responding. I found a fairly clean bed from a later gen square body. My 73 has dual tanks, so I'd also have to deal with adding a fuel door to the other side. I was thinking later last night and this morning that perhaps I should just weld in the patches for my existing bed...
  9. iflyfisher

    K20 Wheel/Tire Confirmation

    Thanks @bucket, Are you running a set of the 12x16.5's you linked in response to my original post on your C20? Frankly, I am not that concerned about running a bias ply tire. The truck might get 3-5k miles per year, mostly kicking around. I'm not going to be on the freeway putting 20k on in a...
  10. iflyfisher

    Retrofitting a 79-87 bed on a 73

    Hi Folks, I am starting work on my Dad’s 73 K20 Fleetside. The bed is in pretty rough shape and am mulling options. Rust is typical but not terrible. I could cut out and replace the worst sections. But I’d still be left with an inner bed banged up from years of hauling wood. I don’t think I...
  11. iflyfisher

    K20 Wheel/Tire Confirmation

    @Craig 85 - thanks for the pics and info regarding the lift. I’ll probably end up doing the lift. I have a Sierra 1500 AT4 that has a 2” lift and really like it. @bucket - not quite sure what you are confirming. I’m guessing the question regarding a 32” diameter and 12” width, not the 33”...
  12. iflyfisher

    K20 Wheel/Tire Confirmation

    Thanks @1x1_Speed_Craig. You have me wondering more about what size tire I can work with. If I were to go 12x16.5 as @bucket notes these wheels were designed for, that extra width may cut into my clearance. Does anyone know if 32” will clear with 12” tires? I have found a few 33” options, but...
  13. iflyfisher

    K20 Wheel/Tire Confirmation

    @Travir, I was hoping to avoid dropping $2-$3K on wheels and tires before the truck has been restored as I'm not sure what I want now, which also may be different than what I'd want after the truck has been restored. So the thought was getting something cheap but workable for the time being...
  14. iflyfisher

    K20 Wheel/Tire Confirmation

    Thanks Strick, Craig, and 75GMCK25. A local guy has a set of aluminum 16s with 265/75’s Ling Long ATs that have about 50% life remaining. Not a fan of the tires. The wheels are okay. But, they would be temporary, and I can probably get them for a few hundred. They would get me on the road.
  15. iflyfisher

    K20 Wheel/Tire Confirmation

    Hi Folks, I am getting my Dad's '73 K20 Custom back on road. I'll be doing some restoration, but I would also like to drive the truck while working on it. The old Sears tires are heavily cracked. I can't even imagine how old they are. The truck was last registered in 2005. The tires are 9.5 -...
  16. iflyfisher

    Hiya Folks, new owner, battery, oil, and filter recommendations

    :)
  17. iflyfisher

    Hiya Folks, new owner, battery, oil, and filter recommendations

    @75gmck25 - Good tips. Thank you. I ended up using some Castrol GTX 10-30 conventional. I figured I'd run this for a bit then do an early oil change. I do plan on replacing the hoses as I work through the truck. I'll also look into the HEI distributor. @Grit dog - Thanks! The battery did have...
  18. iflyfisher

    Hiya Folks, new owner, battery, oil, and filter recommendations

    Thanks everyone for the quick feedback. After thinking about this some more, I have decided to look into a trailer and haul the truck back to my place. Too many things can go wrong on a 4 hour trip with a 50 year old truck that hasn't been run in years. I'll pick up a battery, oil, and filter...
  19. iflyfisher

    Hiya Folks, new owner, battery, oil, and filter recommendations

    Hi Folks, I recently inherited my Dad's 73 K20 pickup, and I think this forum may end up being a great resource! My Dad bought the truck new in 73, and I drove it all through high school. It was a farm truck used periodically, and I don't think it has been started for 5 to 10 years. My hope is...
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