Recent content by SHOTROD81

  1. SHOTROD81

    Tire for 15 x 8 Rally Wheel

    Thanks to you all for the suggestions. Do you think 265/70s would be too tall?
  2. SHOTROD81

    Tire for 15 x 8 Rally Wheel

    Trying to decide on a rear tire size for the old heap, and hoping someone had some suggestions or input. Its an 81 C10 with stock ride height. I plan on taking it to clunker weekend at the local strip a few times this summer just for fun, so the rubber I am looking for would not be full-time...
  3. SHOTROD81

    Cruising Under Stall RPM- TH350

    Finally got the rear end completely rebuilt and am loving it so far. Went with AAM 3.73s and a Detroit Truetrac. I sidestepped my pride and had it done by someone who knows what they're doing. The guy who did it recommended putting on at least 500 miles before any hard launches, so I'm patiently...
  4. SHOTROD81

    8.5 10 bolt Rebuild Components

    About ready to move on to the next stage of my 81 C10 project by regearing the rear end. I am hoping to get some recommendations based on my setup and your personal experience. As I have mentioned before, the current setup is a mismatched mess. 600hp 372 (dyno sheet attached), TH350 w/2800...
  5. SHOTROD81

    Cruising Under Stall RPM- TH350

    The rear differential pursuit was put on hold by an engine failure, but I'm pretty close to having that resolved. The rear I was describing is a truck 12 bolt. For cost comparison, unless I'm looking in the wrong place, it seems that parts alone would run around 1200 for my 8.5 bolt, plus labor...
  6. SHOTROD81

    Irregular valve tip wear pattern

    Harland Sharp
  7. SHOTROD81

    Irregular valve tip wear pattern

    Other than a build sheet for the engine, which only said "customer supplied iron vortec" on the line for cylinder heads, I don't know what all was done to it before I bought it. I wish I had more details. In your opinion, what would be the better (and honestly, less expensive) investment...
  8. SHOTROD81

    Irregular valve tip wear pattern

    It's a little loud, but it's easily eclipsed by engine noise. This plant makes plenty of it.
  9. SHOTROD81

    Irregular valve tip wear pattern

    I put a can and an electric vacuum pump in it last spring, which helped a lot. Before that, the pedal required quite a push to stop in any reasonable amount of distance.
  10. SHOTROD81

    Irregular valve tip wear pattern

    There was lash on all of them before they were removed. Any recommendations on aftermarket heads without spending any more than I have to? I know there are a lot out there. I'm not extremely concerned about getting every little bit of power out of the engine, it already has way more than I...
  11. SHOTROD81

    Irregular valve tip wear pattern

    Hi, me again. I'm finally getting back to my valvetrain problems after a few weeks away. I'm trying to muster the ambition/confidence to do the clearance checks you all had suggested, but observed some other possible issues upon removing the old rockers. What could cause the small wear pattern...
  12. SHOTROD81

    Limits of Vortec Heads

    Do you think it would be wise to change the cam at this point? It seems the consensus is that this cam isn't a good fit for the application. Am I correct in thinking that a little less lift would make for less future problems if I keep the Vortecs in their current state?
  13. SHOTROD81

    Limits of Vortec Heads

    I'll try to get a picture tomorrow. The build sheet says that they are SRP 4.040" Flat Tops part # 338563. I can't find that part on their website, so it may be an old number.
  14. SHOTROD81

    Limits of Vortec Heads

    Here's a pic of the lifter, and one of the cam lobe taken with my newly acquired $12 ebay endoscope. That's the best I could do on the lobe for fear the ebay-special may fall apart if I probed around any more. The exhaust lifter roller looked smooth and solid, which was my main concern since it...
  15. SHOTROD81

    Limits of Vortec Heads

    I didn't modify them, I bought the whole package as-is, with about 1000 miles on the rebuild. The motor was built by a local builder called NVR Racing in Butler, Wisconsin. They have been very helpful, including a complimentary house call to make sure the valve lash was set correct this spring...
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