75gmck25
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    • 75gmck25
      75gmck25 replied to the thread Valve adjustment question.
      I’ve always been told to shake the pushrod up and down to find zero clearance. When you use the spin method you are trying to find...
    • 75gmck25
      75gmck25 replied to the thread Swapping the 350 for a Crate.
      A little more explanation about my suggestions. - two piece rear main seal was used on earlier engines, but GM later started using an...
    • 75gmck25
      75gmck25 replied to the thread Swapping the 350 for a Crate.
      Also take a close look at specs of the low end crate engines. You definitely want to get 64cc Vortec or better heads that give you...
    • 75gmck25
      75gmck25 replied to the thread So, what's this emblem signify?.
      In most years it was listed as the Z81 Camper Special , so look for that RPO code for your year to get the list of mods. It was only...
    • 75gmck25
      75gmck25 replied to the thread Extremely loose steering.
      I agree, steering box gear adjustment is the last step. There used to be a lot of articles with “tips” about fixing your steering play...
    • 75gmck25
      75gmck25 replied to the thread Quadrajet question.
      I’ve had a wide band AFR gauge for quite a while. It’s useful for measuring AFR at cruise or while accelerating, but not that great...
    • 75gmck25
      Just a suggestion - the inexpensive tool should work fine for stock springs, but if you ever buy upgraded performance heads you want...
    • 75gmck25
      75gmck25 replied to the thread dual battery conversion.
      There are battery isolator kits that do a good job, or you could try the very simple setup that was stock on my ‘75 GMC. It’s not fancy...
    • 75gmck25
      75gmck25 replied to the thread Tailgate differences.
      They also changed the GM logo position on the tailgate. On older trucks like my ‘75, the GMC or Chevrolet was centered on the tailgate...
    • 75gmck25
      LMC truck sells the plastic “cluster backing plate” for about $60. You might also want a new printed circuit (wiring for the cluster)...
    • 75gmck25
      I would fix the valve seals, and then really think hard before going down the crate engine route. The cheapest new crate engines...
    • 75gmck25
      Even if it’s at 212 that won’t hurt anything. Many modern engines run at that temp, and even up to about 225 would be okay. A few...
    • 75gmck25
      The article you found on tuning that used a maximum advance of 34-36 degrees is generally correct, but a little backward from the way...
    • 75gmck25
      75gmck25 replied to the thread looking for 17 inch wheels.
      Many new 8 bolt wheels are designed to be hub centric, so the diameter of the hub is critical (I thinks it’s slightly smaller than older...
    • 75gmck25
      75gmck25 replied to the thread Take a guess.
      I believe most GM starters have an R terminal (steps down the voltage to 9 volts for the points while running) and an S terminal (...
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