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  1. Old60Driver

    Sound about right for some weight reduction issues?

    So my '83 K20 has some weight reduction making itself known, so I figured it's time to get in there and do something about it. I've got a few significant issues (holes), and quite a few more little rust spots. Was going to use the process outlined in the link below for the holes, and was...
  2. Old60Driver

    Exhaust Cut-Out Performance

    So if y'all saw my previous post, you know I installed an exhaust cut out on my '83 K20 a month or so ago. Two to one exhaust, long tube headers, reworked 906 heads, vortec intake and a Summit 1103 cam. Been a blast cruising in the ol' girl! Love having the 'fun switch' for some light strip...
  3. Old60Driver

    Daughter's Exhaust Cutout Reaction

    So, I bit the bullet, and installed the 'fun' switch. I've basically got a two into one exhaust, and installed an Summit electric cut out right before the muffler. Checked it out in the neighborhood, and all seemed to be working, with no exhaust leaks. Went for a test drive, and took my 17...
  4. Old60Driver

    Lift or rebuild stock?

    Evening folks! Welp, I've got my '83 K20 just about dialed in, performance wise. And man, do I love driving the old girl. Constantly coming up with reasons to take her for a cruise! lol Decided I was going to go on and change both diff fluids, and the NP208 fluid to boot. Got under there...
  5. Old60Driver

    Pressure Washing Question

    Probably a stupid question, but I'm wanting to replace both diff fluids, as well as the transfer case fluid. The old girl has quite a bit of crusted up gunk on the cases. I've done some light scrubbing, but it's on there pretty good. Can I just soak with a bit of degreaser, and pressure wash...
  6. Old60Driver

    Cool early Father's Day gift

    So, I've been trying to figure the timing curve out on my 83 K20 SBC for a bit. I was in a bind a few years ago and needed a dizzy, and picked up an Amazon special out of desperation. And, while the truck runs, I couldn't effectively tune the curve. My wife, awesome as she is, comes out while...
  7. Old60Driver

    Spreadbore to squarebore adapter

    So I recently upgraded my cam/heads/intake on my '83 K20. Nothing crazy, 906 heads, Summit 1103 cam, Summit 226062 intake. I've got a crappy Amazon special HEI dizzy that is coming all in WAY to early that I'll be changing soon, but that's a different post. lol Overall, she's running pretty...
  8. Old60Driver

    Modulator vacuum line

    Is it possible to swap out the long metal modulator line going from the intake to the modulator with a regular vacuum line? The existing line is pretty gnarly looking (bent to he**), and is a pain in the rear to work around. I'm a bit worried about heat softening it up over that long of a...
  9. Old60Driver

    Power steering leaking from weep hole

    So yesterday, after some top end work, I decided to go ahead and put my A/C system back together in and start vacuuming the system. Well, as I was installing the compressor, I look down, and the power steering pump is flowing out of a weep hole on the back of the pump. When I say flowing, I...
  10. Old60Driver

    Rocker arm discoloration

    Howdy y'all! Recently put a few items into the top end on my (at the time) stock '83 350 with 67K miles. Parts used: Summit 1103 flat tappet cam GM performance lifters (3/4 backlash) PRW 1.5 roller tip rockers 906 vortec heads with screw in studs and beehives, new exhaust valves (intakes were...
  11. Old60Driver

    Quadrajet Air Fuel Ratio

    So, I just recently replaced a few parts on my '83 K20. I put in: Summit 1103 Cam Summit Vortec Intake (still running my Qjet with an adapter plate, about 1" thick) Thoughts on this?? Reworked 906 heads She runs pretty well, but I feel like there's a bit left on the table. After break in, I...
  12. Old60Driver

    Operation "Save the driveway"

    Did a small top end job on my 83K20 (cam, heads, intake), and she's running great! However, I've got some leakage on the TH400. Going to try to pinpoint it tonight. Leaks noticeably more if I let her sit for a bit. Going to wipe everything down, start her up and watch. I don't have any of...
  13. Old60Driver

    83 K20 GEAR RATIO

    G'mornin y'all! So, after some calculatin' this morning, I'm pretty sure I have 4.56 gears in her. Going out to confirm later this morning, but it's just too danged cold right now. I'm 99% sure the original owner (late father in law), never had anything modified on the truck, but it was used...
  14. Old60Driver

    Order of upgrades

    G'mornin y'all! So, sometime last year (or year before? lol) I picked up a '97 880 engine, with the intention of doing a bit of top end work to it (heads, cam, intake, etc...), and slapping it in my 83 K20. Pretty decent deal, 200 bones for a just about complete engine. Pulled the heads, and...
  15. Old60Driver

    Interesting Oil Pressure Indications

    G'mornin y'all! Bone stock '83 350 with about 65K miles. Family owned since new, has never been opened up (relevant later). A while back I had a bad oil pressure gauge (resistor), and upon replacement of both the gauge and new sending unit, the pressure seemed high. Like in excess of 60 at...
  16. Old60Driver

    Quadrajet getting vacuum at ported vacuum

    G'mornin y'all! Been a long minute since I've had any time to tinker, but finally got some. Ol' Blue is running great, but me being me, I wanted to check timing. Like I said, tinkering. I've been running my dizzy advance ported, and she seems to like it. With the vacuum disconnected, I have...
  17. Old60Driver

    Stock 350 getting hot, but only on the highway with AC on

    Okay, this makes no sense to me. I can cruise around all day in this heat, city or highway, no problem. Temp gauge is 180° or so consistently. I can turn on the A/C and cruise around city driving, no problem. Here's the issue. When I hit the highway and turn on the A/C, the temp climbs to...
  18. Old60Driver

    Misc gauges

    I have a few gauges that I'd like to pass on. I believe they all work, but I got tired of fiddlin' with them, and went with a Dakota VHX system. The oil pressure and temp gauge (with needles) have orange resistors on the back. Not sure if they're good, so I might ohm them out later. Anyway...
  19. Old60Driver

    Oil Fill

    This is going to be the dumbest thing I've ever written. So far. Been gone for a while (work), but before I left, I threw an oil change on my '83 K20. Then got ambitious, and threw on some of the chrome bling that my wife picked up a while ago as a gift. Part of that package were valve...
  20. Old60Driver

    1983-ish 4X4 Front Dog Dish Hub Cap

    Looking for a front dog dish hub for my '83 K20. See image below (12" flavor): Thanks!
  21. Old60Driver

    Coolant Temperature sensor

    A while back, I was trying to get my temp gauge working quickly (trying to get her back home), but wasn't having any luck, so I installed a cheapo aftermarket kit from the local parts store, and all was good (other than her getting hot on the highway when I run the A/C). Now that I've got a few...
  22. Old60Driver

    Aftermarket aluminum intake worth it?

    Okay, let's go ahead and get this out of the way. I'm an idiot. There. Done. I said it. So, six months ago, I purchased an intake. Specifically, an Edelbrock 2701 intake. I shipped it to a work site, opened it up, and oooh'd and aaaah'd at the finish. I packed it back up, and dropped it...
  23. Old60Driver

    Upgrade order

    Finally got some time to tinker these last few days. Wife worked on restoring the dash while I de-smogged and added headers. Also put in a new headliner! So with the headers installed, she seems to have a touch more grunt, but I always knew that I wanted to do a bit more for her. I'm...
  24. Old60Driver

    Double Hump thoughts:

    Found a set of rebuilt double hump heads (casting # 3782461) that I can pick up for 400 bones. I've been toying the idea of getting a better flowing set of heads to go with a RV torque cam for my 83 K20, and thought this might fit the bill. What say y'all?
  25. Old60Driver

    Lost an ignition module. Why?

    So, I got the headers installed and welded out. AWESOME! Lost an ignition module on the way home from the exhaust shop. Super NOT awesome. I checked voltage at the dizzy. All good. I thought it was the coil. It was hot. And when I say hot, like the surface of the sun hot. I figured it...

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