Recent content by northern

  1. N

    454+th350 strange rattle

    It wasn't the cooler lines. Whoah. It sure is a tricky one. Something loose somewhere maybe.
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    454+th350 strange rattle

    I think i found the culprit. Trans cooler lines (stock steel ones) were in direct contact with motor mount! I must had bent them when i removed the tranny when i tried another converter, easy fix, took me whole minute to bend them back. Thanks everyone for all sort of ideas!
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    454+th350 strange rattle

    Here is video with manual shifting- noise is gone.
  4. N

    454+th350 strange rattle

    No, I swapped 454 because original 350 had some issues. This th350 is rebuilt to handle 454 torque.
  5. N

    454+th350 strange rattle

    I'll check this. Noise came when I was hunting some driveline vibrations and swapped old converter to one i had from old Corvette TH400. Put old TH350 converted back but did not get rid of the noise. I think I need to check trans cooler lines too.
  6. N

    454+th350 strange rattle

    Bolts are tight and there is no (converter/flexplate) dust shield.
  7. N

    454+th350 strange rattle

    Converter and flexplate bolts are tight. Also spent some time under the car hitting mufflers, headers and oil pans with rubber mallet. I did not find anything. Most of the parts are new or newish as old 350 gave up and I had rebuilt 454 in my shop so I swapped it.
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    454+th350 strange rattle

    Here is another video: It's 2wd and with 2.5" true duals and dynomax turbo mufflers, there is plenty of room for pipes. First I thought noise was detonation but 454 has 8 degrees of initial plus 10 degrees vacuum advance and max mechanical is 33. Tried 4 initial but noise was still there and...
  9. N

    454+th350 strange rattle

    I have a-77 suburban with 454 mk4 and th350. Th350 has Alto Red parts, b&m shift kit, adjustable vacuum modulator, governor springs, increased line pressure, just to handle 454 torque. 454 has long tube headers, eddy performer 2-0 and carter 750, RV cam and peanut port heads, msd HEI, nothing...
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    Suburban Rear Tail Pan Replacement Talk

    The view from the rear. Also had to weld some patches to inside of rear quarter, spare tire compartment was really bad too so I replaced it with some sheet metal. They are really ruff patches but this car has lost its former glory long time ago thanks to numerous owners so I am just fixing it to...
  11. N

    Suburban Rear Tail Pan Replacement Talk

    Old and buried topic but I am doing this exactly same tail pan assembly replacement operation to my old c20. Bought new assembly from LMC, imported it to Northern Europe and took the old one off in two or three pieces. Had to replace and weld one body mounting bracket and most of the gargo...
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