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  1. 1987 GMC Jimmy

    EFE-System

    The exhaust should force it open, but I’ve got it tied open so it doesn’t have that unnecessary resistance. And I had a rattle right there a few years ago that I suspected was the EFE rattling so that also prompted me to tie it open. I’d love to gut that POS out of there or get shorty headers...
  2. 1987 GMC Jimmy

    Looking for 89 V3500 Air Injection System Parts

    Ohh, forgot about that one. Do you know if the crossover tube that runs at the back of the engine bay and the brackets are the same?
  3. 1987 GMC Jimmy

    Looking for 89 V3500 Air Injection System Parts

    I have it: pump, diverter, brackets, tubes, and all the bolts. I cut the tubes right at the manifold, but the rest I have. Actually, the tubes are cleanly cut, not twisted. You might be able to braze or solder them together. It mounts bottom passenger side, and it has a two wire connector for...
  4. 1987 GMC Jimmy

    Hello all

    Looks like an above average rust belt truck to me. Looks like you got your work cut out for you the patchwork, but if you’ve got the time (not even so much the money), it’ll happen. Good score!
  5. 1987 GMC Jimmy

    No Start After Cam Swap

    Double check firing order, and just so I’m on the same page the rotor was pointing to #1 and you felt the compression with your finger? This is what I was gonna say when I hadn’t read that it ran once. Did it run correctly? Maybe the distributor wasn’t clamped down all the way and moved or...
  6. 1987 GMC Jimmy

    Change your throttle cable. Makes a big difference

    You right!
  7. 1987 GMC Jimmy

    Hello all

    I know you’re not just gonna show up here, wave a story about a free truck in front of everyone (a round eye no less), and not post any pictures. I’ve got my eye on you, pal. Seriously though, welcome and post pics.
  8. 1987 GMC Jimmy

    High Torque Starter

    Weird timing. The Delco-Remy starter on my Caprice started malfunctioning and making the most ungodly sounds. It wouldn’t engage the flexplate, but the motor would spin, and if I hit the starter a second time, it would engage and start the car, but it would sound like a coffee can full of nails...
  9. 1987 GMC Jimmy

    Does my engine have a chance of living?

    Holy cow! Are you running a PCV valve? If so, do you check it at regular intervals to make sure it’s working?
  10. 1987 GMC Jimmy

    1981 El Camino parts runner

    That’s what SS was to them??? Jeez, I knew about the 267, but you’d think they could find something better than the LG4.
  11. 1987 GMC Jimmy

    1981 El Camino parts runner

    Nice! Would the SS be a 350 or an L69 305?
  12. 1987 GMC Jimmy

    Gauge light replacement

    168 SilverStar is what I’d recommend. If you can’t get your hands on enough 168s, 194s will be fine. The 168 is a slightly more powerful bulb, and the SS bulbs have a crisper luminescence compared to basic incandescents. I’m not big on LEDs except maybe for cabin lighting. They’re safe to use...
  13. 1987 GMC Jimmy

    Not sure if I want to do brakes on my own, what's a decent price?

    I would still have the rotors turned if you don’t replace them. That’s assuming they’re still well within spec thickness. I’d rather have my smooth, new pads adhere to a smooth rotor instead of one with all kinds of ruts and vallies in it.
  14. 1987 GMC Jimmy

    Rebuild time for my 77 k25

    If you’re doing a straight rebuild and keeping the TBI and swirl port heads, a Comp 12-304-4 is a good close to stock option. That and the lifters and pushrods, of course. There’s no point in grabbing a much higher lift/duration cam because the TBI heads are junk in terms of any performance...
  15. 1987 GMC Jimmy

    Not sure if I want to do brakes on my own, what's a decent price?

    Yours is a C-truck so the fronts are a piece of cake. The rears are an excessive pain if you don’t spring for the right tools to do it with (punny), but it can still be done with a lot of swearing just using regular pliers.
  16. 1987 GMC Jimmy

    Anti-Theft and Post-Theft devices

    I’ve got the steering column clamshell (and an ignition coil kill switch that I have yet to install) pre-theft. Post-theft I have a vengeful disposition and my Beretta. I’ve wanted to do the GPS thingy, but I haven’t looked that much into it. I’ve been really fortunate. I’ve parked and driven my...
  17. 1987 GMC Jimmy

    1989 V3500 Oxygen Sensor Wire Location?

    Damaging the cat due to a rich fuel mixture is more of a long term thing I’d say, but you need it so the truck can properly trim the mixture, get as good as possible fuel economy, not prematurely waste the spark plugs, not prematurely contaminate the oil, not gunk up the valves anymore than...
  18. 1987 GMC Jimmy

    1989 V3500 Oxygen Sensor Wire Location?

    Yeah, that’s your EST bypass wire with the corresponding connector. Make sure that’s plugged in the correct place, or your truck is going to be very limited in terms of what it can do about adjusting your timing as you drive. One of those green ones is the coolant temp sender wire. The other is...
  19. 1987 GMC Jimmy

    1989 V3500 Oxygen Sensor Wire Location?

    Do you have a picture of what you unplugged the connector from?
  20. 1987 GMC Jimmy

    Modify windshield spray

    The round eyes had nozzles that peek up through the cowl, which you could emulate that setup, but yours are likely clogged up. I like the wet arm better than the fixed mount ones myself. The clunkier ones tend to get brittle, and I’ve broken them not being careful when I’m trying to clean. What...
  21. 1987 GMC Jimmy

    700r4 weak 2nd gear shift

    I don’t think it is. That’s why I also went Transgo. I think the accumulator springs are one of the weakest points on the B&M, and that’s why people complain about the shift feel. And the fluid? Dexron or Type F?
  22. 1987 GMC Jimmy

    700r4 weak 2nd gear shift

    I’ll play devil’s advocate against you and argue you didn’t do anything wrong. Was this a virgin transmission in terms of mods before you tore into it? Reason I ask is that the B&M shift kit has a reputation for that tire chirping second gear shift. I’ve found the Transgo to be kind of a light...
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