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  1. R

    LS swapped c20, replace th350 with 4l60e

    If it was me,I'd buy a flexplate and torque converter hardware for a 2001 Silverado just in case,and swap my 01 4l60e onto my 2001 5.3 and set my shift points in my computer. We can tell you the flex plate will work,but what if it doesn't? We didn't build it and no one knows for sure what P.O. did.
  2. R

    New to me 1981 GMC

    Welcome.
  3. R

    TH350 transmission

    Need to check actual rpm with a tach or confirm what gears and tires you currently have. Might look at taller tires 1st. Or O.D. transmission. Remember with a K you are looking at 2 sets of gears and all necessary extras,as well as set up labor on 2 if you can't do it yourself.
  4. R

    86 Chevy k10 No start and no crank

    Short the solenoid with a quarter or screwdriver. Does it crank if so you've lost signal to the solenoid. Make sure solenoid wire is in place and on the correct terminal,move backwards from there,neutral safety switch,ignition switch. Ignition rack
  5. R

    LS swapped c20, replace th350 with 4l60e

    Is it carbureated or injected,what if any computer are you running?
  6. R

    New For Me 1985 Silverado 20 6.2 Diesel

    My 91 got better than 20 for sure I actually calculated it at 25 mpg but thought it was to good to be true,but even if I assume the odometer is not 100 percent accurate I still believe at least 22mpg G30 6.2 4l80e . A coworker a long time ago had an 80s1 ton dually 4x4 extended cab. manual...
  7. R

    need help! 1987 v10

    You need three wires at the alternator A large wire that feeds power to the battery. An exciter wire which is keyed on,and a voltage sensing wire which tells the alternator,the battery is low it's time to charge. At the alternator pull the plug terminal 2 should have battery voltage to...
  8. R

    86 Chevy k10 No start and no crank

    Did you have the starter off?
  9. R

    New For Me 1985 Silverado 20 6.2 Diesel

    This is the same plan I have,I have a decent 1975 K10 but a 350 just isn't affordable for regular 150 mile trips. Bought a 91 parts truck with a 6.2 4l80E,drove it home drove it around a little to test it. Plenty of power to pull trailers and do truck stuff and incredible mpg.I think my K10...
  10. R

    Pumping Air to a Catalyst

    I know nothing about electric air pulse pumps,but do understand how Mazda and Mitsubishi did it without air pumps of any kind. You might want to investigate some,it may be the simplest way. Basics is at Idle a vacuum operated valve opened a valve. This valve allowed air from the air cleaner to...
  11. R

    Did this K20 come factory with catalytic converter?

    I'm just afraid they'll bring back cash for clunkers again to promote EV sales and try to get more ICE off the roads. I don't Facebook so not sure what facebook-esque is. Only social media I do is this forumn. I read off of some others sometimes but this one is the only one I participate in. A...
  12. R

    Did this K20 come factory with catalytic converter?

    Heavy duty emissions the engine is certified not the body, that's why I warned O.P. don't bring too much attention to his engine swap,he has to have an air cleaner with emissions sticker to pass inspection.
  13. R

    Did this K20 come factory with catalytic converter?

    That's the problem the new crowd wants all our old cars driven to the junk yard and everyone driving EVs. Waiting for the next round of cash for clunkers to pushup EV sales.
  14. R

    Help Please - Fighting new Gremlins

    Did you put EVERYTHING back like it was before you started? Did everything work properly before? It is very unlikely some new condition crept in all by itself coincidentally at tge same time you started changing things.
  15. R

    78 k10 starter problem

    As voltage goes down amperage goes up. It's ohms law,the contacts on the solenoid get hot enough from the amperage draw that they stick. If you are cranking slow let things cool and charge the battery.
  16. R

    1977 C10 Rear speakers??

    We don't know. We haven't seen the radio you are talking about get us good pictures,front and back,maybe we can figure it out. The amount of information you are giving us is Like me telling you I found a pair if blue sneakers,will they hurt my feet if I wear them?
  17. R

    1977 C10 Rear speakers??

    If it doesn't have connections on the radio itself,it gets complicated as to whether or not you can add speakers. Example if it has 1x 10 ohm output you can drive 1x10 ohm speaker,1x8 ohm or 2x4 ohm speaker wired in series for an 8 ohm load. You need to find out what you truly have. The...
  18. R

    Help Please - Fighting new Gremlins

    Doesn't sound like a ground problem to me. Sounds like you added a circuit and are back feeding an existing curcuit. Put everything back like it was first. Is the problem gone? If so let's figure out where you went wrong adding a circuit and add one without backfeeding an existing circuit.
  19. R

    1977 C10 Rear speakers??

    If it has a single speaker,it is not stereo. If someone installed a stereo and hooked up only a single speaker the chances are 90 percent that only one channel works now. We need better pics of front and back of what you have,but I'd bet you are going to need to buy a stereo and probably 4 speakers.
  20. R

    Another response to ***CAUTION, PLEASE READ ***

    It wasn't aimed at you,but for all we know you are a risk. Bad guys don't tell you they are bad guys. Also you're going to need thicker skin to live here.
  21. R

    dumfounded

    On post 4 I told how to wire a fuel pump using the alternator as signal,this eliminates pump running if engine isn't turning. Cost about 10.00 if you need a prime function I know 3 ways to accomplish that. We can cross that bridge,if and when needed. Not bagging on anyone,just clarifying for...
  22. R

    dumfounded

    No. Terminal one is exciter/dash light. Terminal 2 is voltage sensing. Correct way would be Terminal block on firewall 2nd choice would be battery positive post,3rd choice would be run it to B+ on the alternator.
  23. R

    Turbo350 w/shift kit slamming 2nd gear

    If you have the room.
  24. R

    350 TBI Exhaust Manifold AIR System

    ? Why? Did you hide cows under it?
  25. R

    TH350 Removal

    Yes I am a big believer in installing transmission drain plugs when doing fluid and filter. Drain and fill your transmission pan every oil change for a year then every other oil change forever,your transmission will thank you.

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