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  1. 1989 R3500

    Can I use my stock 454 intake???

    Can I get rid of the TBI and wiring mess and use a Edelbrock or Holley carb on my Stock intake. I believe the TBI sits on top of the adapter. If so I would like to use it for a while until I get to the rebuild of my engine. I don't know what kind of Carb. I can use. (spread bore, quadrajet...
  2. 1989 R3500

    Who sells 1989 TBI wire harness parts??

    I would like to replace the burnt, broken and brittle wire plugs and nozzle connectors. Does anyone sell them? I looked all over online. Maybe I'm not searching the right parts? Mine is a 1989 454. Any help is appreciated.
  3. 1989 R3500

    Anyone know what these numbers mean on my diff cover?

    I'm guessing that the last set is the date of manufacture. But the rest have me wondering. The only thing I can find is the 30809 number is obsolete, but it doesn't have which rear end it fits. Thanks in advance.
  4. 1989 R3500

    Thread Size for Dana 70 Diff Cover Bolt?????

    I know that the bolts are 3/8X16, but are they coarse or fine thread? Thanks in advance.
  5. 1989 R3500

    Where does the vacuum modulator on a TH400 go????

    I was rooting around under this truck I just bought and found the vacuum modulator line is off. I thought they connect to a hard line and go somewhere to the intake manifold. But I can't find any lines going down from the engine. It's a 454, TBI. Does anyone sell the hard line?
  6. 1989 R3500

    Which 4L80e do I need?

    I am wanting to start looking for a 4L80e transmission for my 1 Ton Dually. I have a TH400 right now that needs to be gone through. Might as well go up to an extra gear since I'm doing a lot of travelling. Mine is a 454 TBI and the Dana 70hd rear end. I'd like to find a good core but don't...
  7. 1989 R3500

    Anyone sell new Speedo needles?

    I broke my speedometer pointer by accident. LMC and Classic Industries don't have them from the look of it. Anyone replace on before? Thanks in advance.
  8. 1989 R3500

    Which rear diff fluid do I need for Dana 70HD?

    I'm getting ready to buy my parts for the rear differential on my 89 Chevy R3500 dually. Can someone tell me which diff oil is best? I.e 75/90, 75/140 etc. I'm probably going with Royal purple or Lucas. Thanks in advance.
  9. 1989 R3500

    How do I take off dually fiberglass fender wells

    I want to remove the fiberglass fenders from my bed. Anyone done it? Is it hard to get them off? Any help is appreciated.
  10. 1989 R3500

    Does anyone sell new seat covers for these?

    I didn't see anything on LMC or Brothers like this seat shape and configuration.
  11. 1989 R3500

    Can I run 235-85-16 Instead of 225-75-16 ???

    I have a buddy who has some 235/85/16 tires for free. Will they work on the front of my 1989 Chevy R3500? I don't know anything about tires. Thanks in advance.
  12. 1989 R3500

    What Newer seats will fit in my 1989 R3500?

    Howdy. I want to replace my old ratty seats with some newer nicer seats out of a newer truck, suburban, Tahoe or whatever might fit. Has anyone done this or have an idea of what trucks, Suv's to look in to? Maybe attach pics of swap. Thanks in advance.

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