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  1. hatzie

    Inherited grandfathers truck!

    It's only original once. It has memories of your grandfather tied up in it as well. The running boards that everyone hates keep stones and sand from blasting through the paint on the rockers. It's a damn nice truck with some desirable options. Don't do a thing to it other than maintenance...
  2. hatzie

    Simplified dual tank with sniper EFI

    The new ones are E15-E20 compatible. Not sure about E85 with the 42-159 valve. I submitted a question to Pollack technical about that. You may want to ask them for yourself. http://products.pollakaftermarket.com/request/fuel-selector-valves/light-truck-6-port-motor-driven-valve/42-159 E85...
  3. hatzie

    Different antenna for ETR radio?

    The ETR radios were not noted for reliablity. I've repaired several 90's GM radios with my hot air pencil that had multiple cold solder joints let go... A blast of hot air and some 60:40 solder and I was good to go. Electrolytic caps are suspect as well. The cans are usually a dead giveaway...
  4. hatzie

    Simplified dual tank with sniper EFI

    Sniper is 60PSI??? If you use the 65PSI Pollack valve then you can plumb it using factory lines and electrical.
  5. hatzie

    Crate motor ID

    Assume everything the seller tells you is a lie. Usually, you will not be surprised. Every 265, 305, 307, and 350 is a 350 out of a Corvette or Trans Am... that is if it's not supposedly a 400.:anitoof: The 283, 302, & 327 are pawned off as 350's too if the liar isn't careful about it. In my...
  6. hatzie

    New from Austin. Trying to fix my wife's truck.

    There are three hose diameters. Usually it's 15/16" Vapor, 3/8" Feed, and 1/4" Return. Take em off and take a sample with you to the parts store. Get SAE J30R9 hose. Gates, Goodyear, Continental, etc all make SAE J30R9 compliant hose... and don't use worm clamps... you'll regret it. Look...
  7. hatzie

    Crate motor ID

    That video may be correct on some of the later blocks. Prior to 1987 or so the displacement is not cast into the block... This is a pretty decent explanation of the most useful smallblock ID information. https://www.crankshaftcoalition.com/wiki/Identifying_Chevy_engines Casting Number...
  8. hatzie

    AC compressor does line up; new compressor

    Yes but that's called venting refrigerant. Don't say another word about doing that if you don't want EPA goons knocking on your door. You got a buddy with a recycling machine to empty the system or it was already empty when you hooked up the manifold gauges... that's the end of the story.
  9. hatzie

    Speedo issues... replaced parts

    Noisy speed head with a jumpy needle sounds like the speedometer is not all that it once was. If the bullet shaped sleeve or the seals in said sleeve are worn the gear will not turn smoothly either. A worn drive gear will cause the same issues as well. I assume you mean the gear on the...
  10. hatzie

    Sun test equipment

    The oil filled capacitors can be mean critters too. Treat em with respect and be exceedingly careful of the scope. Not just because it can bite you. If you modify things inside it may not operate properly without doing a calibration. I've cleaned up a couple pieces of antique test gear...
  11. hatzie

    Speedometer adjustments

    We have the GM parts books that I scanned to PDF... Much easier to just look it up. Back in the dark ages you just had to go to a local GM dealership. If you would prefer not to download 500 meg of 73-91 light and medium truck parts and illustration manuals. Ian Harding has been good enough...
  12. hatzie

    Speedometer adjustments

    That's why I dislike those ratio boxes. They were mostly used on the NP203 & NP205 transfer cases in the 70's. If the speedo cable wasn't absolutely free running they failed pretty quick. The new ones are probably made from Floor sweepings over a charcoal furnace in China. If you can do it...
  13. hatzie

    Mechanical fuel pumps

    The RV series senders fit the older tanks. Using that system in place of the pickup sock in the original tank is a slick way to avoid the filler neck dance.
  14. hatzie

    Mechanical fuel pumps

    Good point. Get a Walbro pump not the cheapies. It's in the tank. You don't want to pull it down because the fuel pump you chose was not up to the task. Fish aroud a bit. Delphi made the RV series sender/fuel-pump-hangar assembly without the fuel pump. You will get the pleasure of properly...
  15. hatzie

    Mechanical fuel pumps

    I missed the fact you're working on a K5 Blazer. The stock GM Fuel pump/sender/sock assembly for the 1987 31 gallon K5 Blazer tank is Delphi HP10026... it's around $155 at RockAuto. Worth every penny IMHO... and about what you'd pay for the cheap spectra sender and the GM fuel pump. Just swap...
  16. hatzie

    Mechanical fuel pumps

    For a pickup body... You can use a 16 gallon tank for a 1987 RV series shortbox squarebody along with a Delphi fuel-pump & sender assembly for the same rig... parts purveyors like RockAuto call the fuel pump and sender a "fuel pump & housing assembly" The 87-91 tanks have baffles for the TBI...
  17. hatzie

    Speedometer adjustments

    I never liked the ratio adapter boxes. One more part to fail. The driven gear isn't a big deal to change. There's a removeable carrier in the side of the transfer case that the speedo gear screws onto. The drive gear isn't that much more involved. Pull the driveshaft out and remove the tail...
  18. hatzie

    Speedometer adjustments

    THere's a drive gear on the transfer case output shaft and a driven gear in driven gear carrier. The NP208C uses the same gears and driven gear carrier as the TH700R4. If you need to swap the drive gear you'll have to remove the tailshaft housing from the transfer case. You can do this with...
  19. hatzie

    Original Tape Player Eats Tapes

    If it's gotten that bad you'll have to disassemble it and pull out the soft pinch roller or at least get access to it. There are gurus that do this kind of work. It might be worth finding one of them. They can clean it up and make it almost new again and they won't bork the deck.
  20. hatzie

    Original Tape Player Eats Tapes

    This is a post on one of the vintage audio groups about cleaning tape track parts on reel to reel decks. http://www.audiobanter.com/showthread.php?t=14275
  21. hatzie

    Original Tape Player Eats Tapes

    The capstan and pinch roller are gunned up with iron oxide. I used to use chlorinated solvents to clean tape rollers, capstans, and heads. It strips the iron oxide audio and video tape goo off the metal and rubber parts. Methylene dichloride is the other name for what I used. It's nasty shit...
  22. hatzie

    Unable to bleed rear brakes

    The J23709 tool can be fabbed with a drill and a vise.
  23. hatzie

    Unable to bleed rear brakes

    Sounds like the warning lamp switch piston in the combination valve is shifted to block the rear brakes. Open the front bleeders and press the brake pedal til the BRAKE lamp goes out. There is a plastic tool to lock the warning lamp switch piston once it's centered. When the switch piston is...
  24. hatzie

    Rpo G86 locking differential

    GM seems to be a little schizophrenic on the G80 and G86 RPO. I was unaware that positracs were available at all in the CK light trucks. The P & G vans but not the CK... Where is that snippet from? Looks like one of the dealer build books. Interesting that they had a special RPO for the Dana...
  25. hatzie

    Rpo G86 locking differential

    That's a rather strange SPID...:confused: Production Options in the 1973-1978 GM Light Truck 51a parts books don't list G86 at all. The references I do find for G86 Limited slip is in the GM automobile parts books. I'm not finding G87 in the 73-78 light truck parts books either. 79-84 parts...

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