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  1. R

    Tbi fuel pressure gauge adapter

    Yea, I recently went through AC hell because of a defective set of gauges.
  2. R

    OBS parts dealer?

    I always ask, where are you located. Then I respond with, "Great , Im like 20 miles away. Can I pick it up today?"
  3. R

    Aluminum Heads to 90 C1500

    I would recommend you take a long look at https://blueprintengines.com/ They build engines and dyno everything. I plan to buy one from them when the time comes but even if you plan to self build look at the parts they use and the results they achieve. This research should get you going in a...
  4. R

    1990 c1500 Engine Upgrade Questions?

    I have the same goal in mind but would like to keep the TBI and stock Ignition system. Just my uneducated opinion, but that cam seems pretty aggressive at 2500-6000RPM. Personally I would be looking at an "RV/Towing" Cam but you do you! I like you header choice. I also have a 1990 C1500 and...
  5. R

    Idler pulley/tensioner question 1990 5.7 with AC

    1990 C1500 with 5.7 v8 and AC. I need to replace the idler pulley on the tensioner which should be a no brainer but having a part ID issue. Parts lookup calls for a GM 10129560 which crosses to Dorman 419-610. OK but those are smooth pulleys with no flange. The one on the truck has side guides...
  6. R

    90-1500

    Just read from Page 1. Nice work. These upper control arm bolts without cams look factory. They put plugs in there at assembly so no cams needed. That means the truck has never had a real FE alignment but just "Tow and Go" There is a $29 tool to remove the plugs before cam bolt install. I highly...
  7. R

    Complete Exhaust System From the Head to the Bed 1990 C1500 Single cab Short bed

    I do have a small MIG that is perfect for exhaust work and other light stuff and that sounds like a pretty good option. I wonder how Summits Return policy is????? If I did this I would just buy a big pile of everything I think I might need and then return what I dont use. This is the method I...
  8. R

    Complete Exhaust System From the Head to the Bed 1990 C1500 Single cab Short bed

    My Mistake on the description. 1990 C1500 Short Bed Single Cab 350 with 700R4. I have not been able to find what I am looking for and I am normally pretty good at looking for stuff. I know I can do the headers and then just send it to exhaust shop but if a full kit exists I dont want to miss it...
  9. R

    Complete Exhaust System From the Head to the Bed 1990 C1500 Single cab Short bed

    Seeing a whole bunch of Header threads so I thought I would post one too. I am looking for a Complete Exhaust system. Short, Mid, or Long that comes with the pipes and mufflers. Side Exit, Single or true dual. DOnt care but I want to buy it all together in one shot that will fit. I dont need...
  10. R

    spraying rear diff oil after new driveshaft

    Did you use a Dorman 697-500 kit? If you did, as I mentioned in an earlier post. The seal for the Dorman Yoke is National 710506. I had a conversation with a Dorman Engineer a while back. The Dorman Kit 497-500 is designed to minic the superseded design GM Yoke and seal. Apparently GM had an...
  11. R

    spraying rear diff oil after new driveshaft

    I went from 342 to 373 . I think you really have three options at this point. Take it to a mechanic. Pull the rear end and take it to a mechanic. Get a junk yard rear end. #3 will be the cheapest but 1 or 2 will get you brand new stuff and likely a warranty.
  12. R

    Bad running after manual swap

    I have found the easiest way to test for vacuum leaks is a torch. You dont light it, just let is flow gas. If the engine picks it up it will rev. Carb cleaner works too but it makes a mess. Generally if it worked before it is something you messed with and not some random new issue. You may well...
  13. R

    1990 standard cab head liner. Big job?

    I just bought a new Aftermarket one with a plastic liner. It was about a 30 min install. Did not even have to remove any trim as the plastic one is flexible enough (Just visors)
  14. R

    spraying rear diff oil after new driveshaft

    I went the doner axle route because it was $300 and I got to pick my ratio. I just added all new brakes and seals and done. You should leave R&P install to pro.
  15. R

    spraying rear diff oil after new driveshaft

    I installed a Dorman kit on mine and screwed up the first one just like you did. The seal comes on the yoke and I ASSUMED, and we all what that means, that it was suppose to stay on there during install. It is not and is destroyed if you do it this way. Remove the yoke, get a new seal, National...
  16. R

    Towing ratings?

    If you are thinking about getting a slide in you need to check the slide in camper spec sheet/weight rating for your truck. These were all "Camper rated" It's in the owners manual.
  17. R

    Good Scanner to Use??

    What about an OTC 3211 or Bosch BLF-19c or Actron 9690 ???? Based on my limited research, they are all the same thing in different packaging. I dont have one for my 1990 but am considering it. The tuner pro is great but requires a bit of a learning curve and driving around with my laptop is not...
  18. R

    Axle yoke and seal

    That yoke and seal has an updated version. Dorman makes it. For the 10 bolt the PN is 697-500. That gets you a new yoke, Seal, and the nut and washer. It you just want the updated seal it's National 710506
  19. R

    700r4 no 4th gear after warmup

    NickTransmissions (and Thank you!) Looking at Sonnax parts and see Oring style and OEM style Boost Valve and same for Reverse Boost Valve Kit. PN are K77898 Reverse Boost valve kit Oring style 77917-471 .471 Boost Valve Oring style or K77898A Reverse no orings 77917-03K .471 Boost Valve No...
  20. R

    700r4 no 4th gear after warmup

    Geometry is factory stock TBI so that not likely the issue. TV cable is new. Engine has the factory 210HP so I dont think the .422 is causing the issue but if I take it apart again I will just go ahead and put the .500 in it. I think I am going to circle back to the boost valve in the pump. It...
  21. R

    700r4 no 4th gear after warmup

    I am going to wait for Nick's reply but is that the parts that go in the same hole as the boost valve? Got PN#s?
  22. R

    700r4 no 4th gear after warmup

    Went to HF and bought a gauge yesterday evening. I did fix the TCC by installing a 4th only vacuum controlled lockup harness. (All the internal wiring and the lockup solenoid was missing) For the first 10 miles the trans works flawlessly. All for shifts are crisp and firm. Lockup works perfect...
  23. R

    700r4 no 4th gear after warmup

    I just did a Transgo Reprogamming kit on my 700r4. The trans was in good shape and worked in all gears (no Lockup but that's another story) It was, however weak slow shifts. Fluid was clean and just a little gray goo on the magnet. I followed the instructions to a T, watched several videos ect...
  24. R

    Pillar mount gauges

    To anyone who has installed a 3 gauge Pillar mount. How did you secure it to the Pillar trim? This is a Universal Mount from GlowShift which by the way fits up to the A pillar very nicely. I could run a few screws through it or possibly use some type of adhesive. Any Suggestions would be...
  25. R

    700r4 VSS and speedometer

    Reporting back again since there are questions. My speedo still does not work right. I pulled cluster and cleaned all the connections with DeOxIt. I did the ECM as well. Where I am at now is I get a Jumpy Speedo but no CEL. I put a vacuum controller 4th gear only TCC lockup kit on it which takes...

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