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75gmck25's latest activity
75gmck25
replied to the thread
Ferd for my Granddaughter
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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...
Sep 3, 2024
75gmck25
replied to the thread
What locker shall I go for?
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Some of the choices are "lockers", while others are termed a "limited slip differential". Limited slip often has internal clutches, or...
Sep 3, 2024
75gmck25
replied to the thread
Edelbrock accelerator pump
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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...
Sep 3, 2024
75gmck25
replied to the thread
Door Jamb switch housing
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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...
Sep 3, 2024
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...
Sep 3, 2024
75gmck25
replied to the thread
roof rust "paint?"
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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...
Sep 3, 2024
75gmck25
replied to the thread
Turn signal troubles
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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...
Sep 2, 2024
75gmck25
replied to the thread
Vintage air vs. stock dilemma???
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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...
Sep 2, 2024
75gmck25
replied to the thread
Are my gears to high for the setup?
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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...
Sep 1, 2024
75gmck25
replied to the thread
alternator upgrade
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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...
Sep 1, 2024
75gmck25
replied to the thread
K10
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AFAIK, HEI became standard in 1975 on square-bodies.
Sep 1, 2024
75gmck25
replied to the thread
Can the heater core be turned off?
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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...
Aug 30, 2024
75gmck25
replied to the thread
GVW
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Using Visa to pay is an easy way to pay for it in US$ and let your bank convert it to NZ$ for your account. I do it frequently the...
Aug 29, 2024
75gmck25
replied to the thread
Modern center console rear a/c and heat
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Many newer cars have heat/AC ducts that come off the main plenum into the console for A/C or under the carpet area to get heat to the...
Aug 29, 2024
75gmck25
replied to the thread
GVW
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If you look through the GM document posted, you will be able to get an idea of what you have. Standard K20 (6000 GVW) should have 5...
Aug 29, 2024
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