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  1. M

    L31R Install And Fired 98 Chevrolet K1500

    Been awhile since I have posted and I thought I would get some feedback on a couple of questions. So the engine is in, fired up and break in done, and have done the required doughnuts on the Highway. Minor upgrades done, empty converters, two and a half in out Flowmaster super 44 mufflers, 4...
  2. M

    Dual Temp Thermostat

    Can the single stage be used as a replacement for the dual temperature stat?
  3. M

    98 Chevrolet Throttle Body Plate

    Hello, I was looking at the front underside of the throttle plate and noticed a flush riveted wide piece of sheet metal on the plate. The other side nothing, what is purpose and should it stay? Thanks
  4. M

    98 K1500 Thermostat

    What is a good temp for L31R crate engine, egr delete, minor port work on intake, and Hookers. Empty cats, duals out back or under bed, no tail pipes? My "friend" has a very heavy foot. 160?
  5. M

    EGR

    EGR block off being done, 98K1500 L31R crate engine. Question is the hole in the bottom of intake in the center, can it be blocked off? What to use? Do they make freeze plugs that big? Plumbing, or just leave alone? Thanks
  6. M

    L31R Porting Intake

    New crate engine, just doing some simple mods since I have to get engine in my commuter truck, 98 K1500. I am doing some simple blending on factory lower intake just for grins since it is already off. Mostly all I can see is to take off either casting lines at runners, a little blending going...
  7. M

    Stock Crate L31 Roller Rockers

    Hello Troop, will a set of 1.6 1 roller rockers fit on the L31 without the pushrod hole being enlarged. Time issue with crate motor or I would just disassemble and Freak it out myself. Long story work injury last Dec. and wife wants it finished as soon as possible. So thought that roller lockers...
  8. M

    First Post

    Hello from Missouri, Just wanted to check in and Browse the forum as I am an old hand at pre 86 Chevrolet trucks. I have a 98 K10 that I am installing a new L31 crate motor as I spun the no4 rod bearing for some unknown reason. :flamingdevil: The previous L31, Hollowed out cats, tru dual...

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