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    Correct Exhaust Manifold Bolts

    Grade 8s with washers works but don’t look nice and are a far cry from an OE looking bolt. I had bought some 2.5” grade 8’s that I cut down to 2.25”, but ended up replacing them with ARP’s instead
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    Dual fuel tanks and valves

    Same on my ‘80 half ton, inside of the frame rail just in front of the back cab mount. Here’s a picture without the bed on, ignore my hose routing (my valve was bypassed)
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    Best header back exhaust package for a 1985 K10 short bed

    IIRC the difference between a LB or SB kit is the length of the first straight section as it leaves the mufflers. Many kits just require cutting that pipe to length.
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    A very expensive and dumb mistake (update I was wrong)

    So long as the angle at one joint matches the angle at the other it’s all good! No different than the downward angle from the trans to the pinion. I suppose it could make the phasing of the joints more sensitive to pinion angle. Pinion and transfer case are both parallel to the frame rails...
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    Filling in seams

    If mine were off by a 1/6” I would’ve smeared body filler on em.
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    Filling in seams

    I shaved and smoothed the door jambs but left the seam at the top of the B pillar on the exterior.
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    Why doesn't anyone use the Chevy "Connect & Cruise" packages?

    It’s going in a ‘71 Jaguar XJ-6 if I get it, so no smog concerns.
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    Why doesn't anyone use the Chevy "Connect & Cruise" packages?

    I think I got a deal in the works for an ‘07 Escalade with the L92 for cheap, has a rear main leak and the cats are no good. Seller is responsible for smog in CA unless it’s non operational. CARB approved Y pipe and cats is $2K and the shop estimate for rear seal is 12 hours. Repair would cost...
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    Cab bottom pics needed

    That is a heavy coat of epoxy, white tinted raptor liner, base coat, and a medium solids clear coat. No experience with the 3M undercoat but most everything 3M is quality product. I’ve used U-pol raptor liner on some projects and Dad did the bottom of his ‘56 and under hood with U-pol...
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    Dual Tanks Fuel switch delete

    ^^^ This If the system would work well without a selector valve GM wouldn’t have spent the money putting them in. If you need to hack it to get by for a while, then so be it. Whichever tank has less resistance to pull the fuel from may end up getting ran dry faster than the other. When my...
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    A grand hello From eastern Oregon

    Welcome from N.E. California! We need some pictures Sir. I am just finishing up a 3 year restoration of my 1980 K-10 https://www.gmsquarebody.com/threads/80-k-10-squircle-build.34732/
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    Cab bottom pics needed

    @legopnuematic beat me to it but here’s another, also a picture of the skids I built to hold my cab until the bodywork was done and it was ready to go back on the frame. Probably easiest to just tip the cab on its back to paint the underside
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    Aux battery for audio

    Basically…. Positive amplifier wire directly to the battery terminal fused within 18” or so of the battery Most people ground to the body near the amplifier, I took it one step further and grounded to the frame under the cab. That’s one of the reasons everyone is stressing the importance of the...
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    Daughters ‘87 needs to ride smooth.

    Auto manufacturers are also under tremendous pressure to increase the efficiency of their vehicles, customers want better fuel mileage and the federal government taxes manufacturers more in vehicles that are less efficient. Maxing tire pressure is the cheapest economical modification possible...
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    Aux battery for audio

    Soooooo... Is the negative terminal on the cranking battery only attached to the core support? I know its common for the negative to be attached to the core support with like a 12 Ga wire, however there should be like a 4 Ga (approximate) from the negative terminal to the block or alternator...
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    Daughters ‘87 needs to ride smooth.

    Here are some things to try: Let some air out of the tires - Definitely make sure you're not running at the sidewall rated max PSI Run a 'P' series tire instead of an 'LT' 6 ply tire Run a 15" tire/wheel with tall sidewall instead of a low profile Softer spring rate Use bonded rubber (cleveite...
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    Need an idea for a good improvised straight edge.

    Quality level (Stabila) and a feeler gauge maybe
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    What are these holes for?

    Consumables are pretty standard Tweco style stuff... I assume hard parts will be difficult to find if/when internal parts break. My Dad bought it mid 2000's or so, Panasonic was big time involved with industrial welders and robots back then so we figured they weren't going anywhere. They...
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    What are these holes for?

    Mig welds and body filler work pretty good getting rid of fender holes...
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    Where does this go???

    Illumination wires are typically grey IIRC @75gmck25 is correct, constant hot should be orange Green wires are typically associated with cruise control and A/C IIRC, I know several GM cars use green for the A/C compressor switch wire
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    New here from ponchatoula,La

    Welcome from California
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    Finally, a squarebody forum!

    Welcome from California
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    Engine Paint Color Question

    it's your truck, paint it whatever color you think looks good. You’re more likely to get judged for sloppy work than for color choice.
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    Filling small holes without welding

    Same ^^^^
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    Surface rust. What are the best practices?

    Eh…. Squirt some lube on the latch mechanism and push it closed. I suppose you can work the latch a few times to ensure it moves first. Hood latches don’t get real scary until it’s the first time closing the hood after paint and reassembly

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