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  1. mguner

    360 Performance Suggestions Wanted

    Exhaust with an X or H....
  2. mguner

    471 Big Block high rpm problems

    When you put it back together from the cam gear coming loose did you have you move the distributor for it to run?
  3. mguner

    471 Big Block high rpm problems

    If your air filter has ever gotten wet and it is a paper filter the fibers will swell and restrict flow..... prost!
  4. mguner

    471 Big Block high rpm problems

    Yes that is fine or any manifold vacuum source on the carb just not ported vacuum.
  5. mguner

    471 Big Block high rpm problems

    After reading post #24 again you may be on to it. Cam timing sure could be off if nothing else changed.
  6. mguner

    471 Big Block high rpm problems

    As Columbo would say... One more thing.... Have you tried reversing polarity on the distributor?
  7. mguner

    471 Big Block high rpm problems

    Or just throw in a 6.5 valve and see if the problem moves up the scale or goes away. If none of that works you may have to get out a degree wheel and spec card and see where that cam is at.....
  8. mguner

    471 Big Block high rpm problems

    Need to run it with a vacuum gauge, you may be pulling enough at WOT to close your power valve and the related miss fire can fool the wideband.
  9. mguner

    471 Big Block high rpm problems

    Well hell! Runs the same with and without the air filter?
  10. mguner

    471 Big Block high rpm problems

    0 DEGREES TDC mark on the distributor where #1 terminal is and #6. Remove the cap and see how the rotor corresponds to which ever mark it is pointing to. If it is not dead on or just a hair after you may have an issue. If it is closer to the next terminal in the firing order you may be able to...
  11. mguner

    471 Big Block high rpm problems

    If all that check out we are back to rotor indexing in the cap. Quick check would be to swap distributors.....
  12. mguner

    471 Big Block high rpm problems

    Air cleaner / filter restriction will cause AFR to go rich and engine to crap out......
  13. mguner

    471 Big Block high rpm problems

    What air cleaner and filter and how much hood clearance? My sixpack tried to suck the hood down till I scooped it.....
  14. mguner

    471 Big Block high rpm problems

    I bet you are going lean for one reason or another, either jetting or pump.... Maybe even sucking metering rods down or power valve closed with that much CID.
  15. mguner

    471 Big Block high rpm problems

    Good thought have you tried it without the pill?
  16. mguner

    471 Big Block high rpm problems

    The other possibility is rotor indexing in the cap is marginal and stops jumping spark with the retarded timing. Maybe even a bad or marginal ignition coil.
  17. mguner

    471 Big Block high rpm problems

    Fuel supply issue I would bet. Install an external gauge and see what happens to your pressure under load. If the pressure is good you are lean on jetting. Tell us about your carb.
  18. mguner

    Best ET

    9.23 / 132 MPH But you didn't ask what in.... :lol:
  19. mguner

    Static Compression to Octane

    Aluminum heads should let you get by with 91. A short duration cam or low overlap profile could make it a little dicey.
  20. mguner

    how can i beef up my 318 performance

    318willrun is doing a great thread on low buck 318 performance. http://www.forabodiesonly.com/mopar/showthread.php?t=338351 The short answer is there is a lot of meat on the table with the 318. Proper timing and advance curve, carb and intake, dual exhaust with an X or H pipe and the right gear...
  21. mguner

    Engine leaning out at 3000rpm

    Wishing you success!
  22. mguner

    Engine leaning out at 3000rpm

    What does the fuel pressure read on the carb line when this happens?
  23. mguner

    Engine leaning out at 3000rpm

    Yes it would show rich IF it wasn't sucking air in the exhaust.....
  24. mguner

    Engine leaning out at 3000rpm

    If you haven't tried it already hot wire the coil to a straight 12 volts FROM THE BATTERY and see if it changes anything...... I just finished fixing a friends car that had similar symptoms and the main issue was low voltage to the ignition and a failed coil. Part of the issue was the typical...
  25. mguner

    Post your combo

    Density Altitude should be a field in the form as well....
  26. mguner

    Calvert set up pictures

    Mono leaf springs on sale $44.99! 54" eye to eye. http://www.speedwaymotors.com/Speedway-Chrysler-Type-Mono-Leaf-Spring-65-Lb-Rate-7-Inch-Arch,7365.html
  27. mguner

    Calvert set up pictures

    Speedway Motors has some Mopar style mono leaf springs on close out for $49! Might check them out....
  28. mguner

    383 cam selection

    Tire size is going to be a big part of the equation....
  29. mguner

    383 cam selection

    With the 3.55 gears I would err on the side of torque. The 383 is a great engine but is easy to over cam.
  30. mguner

    Oil Bypass Filter kits

    The ported nipple on the carb you speak of is the passenger front about even with the adjuster screws.
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