75gmck25's latest activity
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75gmck25 replied to the thread AC noise under throttle.The A/C controls run off engine vacuum, and the vacuum reservoir under the hood should keep the controls vacuum relatively constant... -
75gmck25 replied to the thread What is this hole for?.The metal bracket behind that hole is attached to the HVAC duct that goes to the driver's side vent. In the LMC catalog it is the...
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75gmck25 replied to the thread Fluid Changes.Simplest choice is to use 5 quarts of 10w30 full synthetic for an SBC. Even 10w30 Dino oil will work fine, but it will need to be...
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75gmck25 replied to the thread Ferd for my Granddaughter.Quadrajet was not used on the 428 Cobrajet. I had a 1969 Torino/Fairlane Cobra with a 428 Cobrajet and it definitely had a Holley...
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75gmck25 replied to the thread What locker shall I go for?.Some of the choices are "lockers", while others are termed a "limited slip differential". Limited slip often has internal clutches, or...
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75gmck25 replied to the thread Edelbrock accelerator pump.If you get a piston stop, and then find the balancer is one that puts TDC at the 2:00 position, use an aftermarket timing pointer that...
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75gmck25 replied to the thread Door Jamb switch housing.I think Rivnuts or Nutserts would also work, as long as you find one with the right threads. You might have to drill out the hole a...
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75gmck25 replied to the thread Door Jamb switch housing.My door frame has a hole with threads and it had very rusty factory door switches. I tried using the LMC switches on my K25 and they...
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75gmck25 replied to the thread roof rust "paint?".I’m not a body & paint guy, but could you use POR-15 and then paint over it later? It’s used a lot to prevent rust on the chassis or in...
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75gmck25 replied to the thread Turn signal troubles.Most turn signal issues are due to poor grounds or missing grounds at the light housings, the wiring loom up under the rear bumper not...
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75gmck25 replied to the thread Vintage air vs. stock dilemma???.I bought mine from Summit, and IIRC they were listed as Vintage Air parts. Put a good coat of paint on the brackets or they quickly get...
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75gmck25 replied to the thread Are my gears to high for the setup?.I have 4.10 gears and 31" tires in my K25, and it's a great combination unless you like to drive over about 70 MPH (about 3100 RPM) on...
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75gmck25 replied to the thread alternator upgrade.You don't need a resistor or dash light for an alternator that works like the original 10si or 12si in a square body. However, you need...
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75gmck25 replied to the thread Can the heater core be turned off?.I found a vacuum-controlled heater bypass valve, and set it up so when I put the A/C in Max recirculate mode it also bypassed the heater...