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  1. Keith Seymore

    Rear Brakes Locking Up

    Joining late, but to reiterate: You need to go by the reservoir size. On the cast iron units: larger reservoir in front services the front brakes. WIth the aluminum body units: larger reservoir in rear services the front brakes. But it is ALWAYS larger reservoir = fronts; small reservoir...
  2. Keith Seymore

    R30 front brakes

    All 87 R30 are JB8 brakes and use the same front caliper. Original production part number was 14005769 and 70. K
  3. Keith Seymore

    Towing with an old truck

    The one with the Haulmark?: yah - that was ill advised. I wouldn't do it again. Not so much for the handling aspect, but with the little V6 and manual trans it struggled a bit. K
  4. Keith Seymore

    Towing with an old truck

    In fact, this set up crossed the Rockies when we moved from Michigan to Arizona - K
  5. Keith Seymore

    Towing with an old truck

    Mine was a daily for 30 years and 200000 miles. Light hauling, trailering, and back and forth to work. It's what they were made for, and that's what we did with them back in the day. K
  6. Keith Seymore

    1987 Chevy V10 steering wander

    Did you shim the caster up like I suggested? It's something you can do at home, in the driveway, without affecting any other adjustments. 10 degrees is what we used in order to fix customer complaint vehicles that the dealerships couldn't fix. K
  7. Keith Seymore

    1987 Chevy V10 steering wander

    The two critical adjustments there are "Thrust bearing preload" and "Overcenter" rotational torques. K
  8. Keith Seymore

    1987 Chevy V10 steering wander

    Crank the caster way up. We used to do 10 degrees in order to fix customer complaint vehicles. K
  9. Keith Seymore

    Door Hinge Shims

    Those are a couple of the worst I've ever seen. K
  10. Keith Seymore

    Newer Model Bed

    They were scrapped. K
  11. Keith Seymore

    Brake upgrade using GM parts bin...

    All squarebody front brakes are single piston. I cannot answer the NBS questions. K
  12. Keith Seymore

    Why did GM do this???

    This is correct. And retain the clamping force for a longer period of time. K
  13. Keith Seymore

    My other special vehicle

    So sorry to hear how this came about, but welcome. I have a GTO a well; mine is a '65. Got it from my dad. https://www.hotrod.com/features/5000-mile-unrestored-1965-pontiac-gto-dragstrip-warrior-new-still-family/ K
  14. Keith Seymore

    How to fix my Front Axle not alligning

    Just to expand on this: when the cab is not square on the frame the front end will shoot off in that direction, in order to get the hood to fit between the fenders. Sine the bumper attaches to the frame this will manifest itself as a mismatch in the gap between the end of the bumper and...
  15. Keith Seymore

    C10 LS Swap Actual Cold Air Intake

    I'd leave it and just plan on not getting caught in a storm (I'd pull over until it let up anyway). K
  16. Keith Seymore

    C10 LS Swap Actual Cold Air Intake

    One more story: I mentioned earlier that water is the bane of any engine induction system engineer's existence. The problem with the GMT800 was that not only was the truck new but the engines were a new design, too. That meant there weren't many around and you sure as heck didn't want to damage...
  17. Keith Seymore

    C10 LS Swap Actual Cold Air Intake

    We weren't out of the woods yet, however. The next hurdle was that the engine coolant overflow bottle was on the front of dash. That allowed the assembly plants to evacuate and fill the coolant system prior to fender install. With the battery now on the front of dash that meant the coolant...
  18. Keith Seymore

    C10 LS Swap Actual Cold Air Intake

    There are some "architectural" things we did, too, that you might not notice. These were required to even give us a shot at getting in the game. The '96 and beyond GMT400 models had the round element air cleaner on top of the fender, with the battery in the RF corner (passenger front) of the...
  19. Keith Seymore

    C10 LS Swap Actual Cold Air Intake

    I hope you don't mind if I share some stories, since I have a minute: The system was capacitized for the "big engines" of the day: the L18 8.1L large block and the 6.2L diesel. Flow restriction specification (from GM Powertrain) was a ridiculous 1" Hg restriction at "max flow", from the...
  20. Keith Seymore

    C10 LS Swap Actual Cold Air Intake

    Looks good to me. I did the original design for the GMT800 engine induction system. Many of the part are still in use today. For those of you still considering doing this you might be able to find an airbox at a junkyard and use that as a starting point. K
  21. Keith Seymore

    V1500 suspension question

    Front springs should have a reverse arch, especially if they are the two leaf variety. Rear springs should contact the rear axle directly (no blocks). K
  22. Keith Seymore

    Frame & undercarriage advise!

    '91 Suburban generic info packet: https://www.gm.com/content/dam/company/no_search/heritage-archive-docs/vehicle-information-kits/chevrolet/1991-Chevrolet-Suburban.pdf For '91 code 22 is "Brilliant Blue Metallic" - but you really can't go by the noun names. Recall "Carousel Red" on a Pontiac...
  23. Keith Seymore

    Drip Rail Sealant

    This is correct. Sort of a super thin two-sided black adhesive tape. The screws had sort of a waxy daub on the end which spread across the threads when installing. K
  24. Keith Seymore

    Newer Model Bed

    Not a square, but I like them too. The purists will blow a gasket, but I like the way the feature line on the door aligns with the top of the step. K
  25. Keith Seymore

    80 sq body

    You couldn't get a shortbed in a 3/4 ton. So it's either a K20 that's been cut down - or - (more likely) a K10 with 3/4 ton axles. K

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