75gmck25
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    • 75gmck25
      75gmck25 replied to the thread cheap-ish options for my 86.
      The Vortec 062 vs 906 head debate is a little like debating what weight of oil to run. There is a lot of good and bad info out there...
    • 75gmck25
      75gmck25 replied to the thread electrical Power while running.
      You definitely want to use relays or an integrated fan controller ( which has relays in it) connected directly to your battery. If you...
    • 75gmck25
      75gmck25 replied to the thread cheap-ish options for my 86.
      Consider your long term plans: Your best long term fix would be Vortec or aftermarket aluminum heads with 64cc chambers, and use thin...
    • 75gmck25
      75gmck25 replied to the thread What to secure carpet with?.
      I think my first effort would be to clean the metal surface well and then use carpet tape. It holds carpet down well in the home, and...
    • 75gmck25
      75gmck25 replied to the thread 76 C20 454 harness mess.
      The 2nd battery was a fairly common factory option for towing or a slide-in camper. On my ‘75 there is a battery tray and an ignition...
    • 75gmck25
      75gmck25 replied to the thread A/C connecting.
      The older systems often used o-ring fittings in SAE sizes 1/2”, 3/4”, etc) while newer system usually are metric (10mm, 12mm). I...
    • 75gmck25
      75gmck25 replied to the thread Exhaust kit help?!.
      On my ‘75 K25 there is ample space for a nearly straight pipe on the drivers side, but on the passenger side the crossmember has a...
    • 75gmck25
      75gmck25 replied to the thread Dash cluster problems.
      It just needs to be grounded, and a grounding block up under the dash is what GM used on later models that had more ground wires. You...
    • 75gmck25
      75gmck25 replied to the thread Dual tanks dilemma.
      It sounds like you have the old 3 or 6 port solenoid with only one power wire. With no power a properly plumbed 1980 should default to...
    • 75gmck25
      There are disk brake conversion kits, so I assume they sell a proportioning valve to go with them. There are also hot rod adjustable...
    • 75gmck25
      A larger booster makes sense, but I would just use one from HD brakes on a squarebody of the same year. You also need to change the...
    • 75gmck25
      75gmck25 replied to the thread Dash cluster problems.
      I don’t want to beat you up about it, but you need to be more clear about what you did. Apparently you left your old cluster in place...
    • 75gmck25
      75gmck25 replied to the thread Dash cluster problems.
      If it has a voltmeter it’s not a ‘75 cluster. However, it could have been modified. The ammeter cluster connects to two wires under...
    • 75gmck25
      75gmck25 replied to the thread No gas to carb.
      You didn’t mention replacing any rubber fuel lines. If you moved them around a lot in the process of working on the tank switch you...
    • 75gmck25
      75gmck25 replied to the thread Tach needle bouncing..
      The original factory tach had a noise filter in the wire that connected to the distributor. The OEM filters are no longer sold, and...
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