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  1. hatzie

    Help identify this diesel engine

    The 350N were the V8 Olds diesels. Commonly 350N is used for just the early engines. Some of the early engines had a D cast into the side of the block at the freeze plug level like the Goodwrench roller lifter engines' DX casting mark... However not all of the early Olds diesels' had a D cast...
  2. hatzie

    Help identify this diesel engine

    Look in the GM parts books and the Oldsmobile diesel tech training textbooks... It was called the 350N by GM. I don't remember what was cast into the side of the block on those engines. The improved Goodwrench replacement 350 Olds diesel has DX cast into the sides of the block. It got...
  3. hatzie

    Help identify this diesel engine

    The Oldsmobile engines used Stanadyne DB2 pumps as did the 6.2L & early 6.5L diesel, and the 6.9 & 7.3L IH engines in the 80's Ford F series trucks. The Oldsmobile, AMG, and IH DB2 injection pumps are not interchangeable. That engine has the older pencil injectors so my guess is it's a 350N...
  4. hatzie

    I got owned. It's not a TH400 . Diff between TH350 vs. TH375

    Some of those 70's land yachts and barges like my Bonnie Wagon are nearly extinct. Mom had a 1970 Delta 88 that retired in 1983 with over 380,000 miles. The NYS winter salt ate it up after they moved to Upstate NY.
  5. hatzie

    I got owned. It's not a TH400 . Diff between TH350 vs. TH375

    My first two cars were a 1973 Pontiac Catalina with a 400 Pontiac and 1973 Bonneville Wagon with a Pontiac 455. Both of them had a TH375. My grandfather towed a travel trailer all over the desert southwest for over 210,000 miles with the Catalina on the original transmission. The Catalina was...
  6. hatzie

    Alternator draining battery

    The sections of wire from the ring terminals to those white nylon baluns are fusible links. If you replaced them with regular wire and you develop a short it'll burn down your truck. #1 is the Field Exciter wire. This wire receives voltage when the ignition is switched ON. It's the White...
  7. hatzie

    86-upgrading headlights keep stock look

    Lamin-X works to keep the lenses from getting blasted but it accelerates the reflector degradation by trapping more heat. Again a trade off.
  8. hatzie

    86-upgrading headlights keep stock look

    Are they glass lenses like the Hella E-Code H4 bulbs or plastic? Glass lens with Metal reflector E-Code lamps with H4 or 9000 series bulbs are very nice setups. However... Everything is a trade off... The really nice thing about sealed beams is that changing the bulbs to high quality Halogen...
  9. hatzie

    Double or single flair on front brake lines, 83 square.?

    I wonder that myself. I got away with 45° flares on my Subaru GL Hardtop and Brat. I almost guarantee they were JIS... They worked.
  10. hatzie

    Double or single flair on front brake lines, 83 square.?

    Interesting. I must've not done enough late 80's American cars in my misspent youth. I got curious and looked around on Google for the odd British-Girling bubble flares I saw once on a Triumph...They have a taper against the ferrule and against the fitting unlike the ISO DIN bubbles that have...
  11. hatzie

    Double or single flair on front brake lines, 83 square.?

    ISO (International Standards Organization) or DIN (Deutsches Institut für Normung) flare is a bubble flare. Die verdammten Deutschen came up with them. :p Inverted 45° is SAE (Society of Automotive Engineers). The Brits loved 37° flares. Helped a buddy make up several on a Morgan and an MG...
  12. hatzie

    Double or single flair on front brake lines, 83 square.?

    What GM vehicles use ISO flares on the brake lines? Not saying they didn't. It's not a real good union for high hydraulic pressures... I'm surprised US DOT let em use them on brakes in the US. I guess you can buy anything including the DOT.
  13. hatzie

    Double or single flair on front brake lines, 83 square.?

    Standard inverted 45° double flare for SAE brake lines. Nothing else will be safe. Metric brake lines are inverted 45° double flares. Made several feet of these up on various Subaru, Toyota, Datsun, along with VW Rabbits, Jettas, Ghias, and Beetles. Metric fuel lines on the higher pressure...
  14. hatzie

    86-upgrading headlights keep stock look

    There are two different size rectangular bulbs on the 1980-1988 squares. Two rectangular sealed beam lamps are 142mmx200mm (5"x7"). H6054XV https://www.amazon.com/dp/B000C18Q4Y Four rectangular sealed beam lamps are 100mmx165mm (4"x6") H4666XV High Beam https://www.amazon.com/dp/B000CO7AJ8...
  15. hatzie

    86-upgrading headlights keep stock look

    Sylvania XtraVision is one of the best sealed beam lamps I've ever used. Hella ECE E-Code H4 lamps are reputed to be very good as well. They are GLASS LENS lamps not plastic that's going to get hazy and nasty after a few years. They both stay inside the US DOT legal 35W/55W power ratings...
  16. hatzie

    350 Distributor Recommendations

    The stock AC Delco D504A coils were 50KV or 55KV. You don't need more than that on these engines. There's not enough compression to cause issues. The aftermarket "hot" coils don't last long and they can screw up the module when they die. If you have a dead module in the ESC distributor and...
  17. hatzie

    350 Distributor Recommendations

    MSD quality levels aren't what they used to be. Not much is. You can't use the small cap HEI with a carburetor. The TBI ECM completely controlled the spark advance on those engines on the RV squares and the earlier GMT400 trucks. As noted it's hard to beat the old AC Delco large cap HEI with...
  18. hatzie

    Steering colum part needed

    Look up the part number in the parts books and google it. Ripping that part out of a working column will make that column useless so I don't blame the salvage guys.. You may find it's cheaper to just buy a used column.
  19. hatzie

    yet another old guy with a old truck!

    The TH3560 will not bolt up to the LS motors. Get a whole donor so you have the transmission and transfer case along with the engine. You won't be able to use the NP263 or... without going to a Dodge or Ford front axle because the cases used in the GMT800 trucks are LH drop.... you can likely...
  20. hatzie

    Turn signal flasher question

    Check the bulb on that corner. You wouldn't believe the stuff I've found done by previous owners even with things as simple as light bulbs. I've found 1156 bulbs in 1157 sockets... You really have to force it to make the 1156 bulb fit in the staggered 1157 socket. There's someone else on the...
  21. hatzie

    Oil Filter Conversion

    ZERO oil pressure is gong to do a heluva lot of damage to the engine... end of story. This is why the wrenchies at GM etc put a bypass into the oil filter systems to keep oil flowing no matter what. "Dirty oil" is a relative thing. The motor oil in the pan is either clean and new or it has...
  22. hatzie

    Mechanical oil pressure guage fitting

    Back to the original topic. Assuming the OP doesn't have a 1973-1976 truck with the capillary tube gauge... Unscrew that fitting and install a 1/8NPT brass plug in that hole or an oil pressure sender along with a 1/8NPT 2" brass nipple and 1/8NPT 45° brass elbow. Don't use pipe tape on either...
  23. hatzie

    Mechanical oil pressure guage fitting

    My post was passing along a comment from an older and much wiser man than me that tends to keep me out of trouble now that I'm older and a little wiser... Trouble that would've found me when I was younger because I couldn't hold my tongue. As I've gotten older I realized... Who the hell cares...
  24. hatzie

    Oil Filter Conversion

    Better to pump any oil than none.... The oil in the crankcase has been through the filter the last time you ran the engine. I'd guess it takes maybe a five minutes at idle to run the contents of the pan through the oil pump and filter and less at 2500RPM. If you have metal filings or sand or...
  25. hatzie

    Turn signal flasher question

    Do all the lamps flash as they should now? If they all work I wouldn't worry about it. Maybe pay more attention when you do your next monthly pre-trip lighting and tire inspection... IIRC The side markers on the 73-80 trucks should light when the flashers are off and go out when the flashers...

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