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  1. gtxrt

    ported heads vs HP gain

    it must move the peak power to a higher rpm ?
  3. gtxrt

    ported heads vs HP gain

    if you have a stock engine with decent flowing heads from the factory and then take the stock heads and mildly port them. then put them on the same stock engine will there be a HP gain and or will the peak TQ and HP move to a higher rpm.
  4. gtxrt

    My new stock stroke 400 build

    duration is fine but would go with 1.6 rockers with that low lift cam.
  5. gtxrt

    Rear Diff Noise

    my point was you need to have an additive in there. ford or gm ac-delco are better than the chrysler additive. do not use synthetic lube. what weight is the lucas ?
  6. gtxrt

    Rear Diff Noise

    did you put the sure grip additive in.the gm one is the best.
  8. gtxrt

    Oil pressure irregular

    that is the right filter and a good one too. i would check the relief valve it easy to do.
  9. gtxrt

    Oil pressure irregular

    what is the brand and part number on the filter
  10. gtxrt

    Oil pressure irregular

    i was thinking more if it was the right one not the brand. when i got my car oil pressure would not go over 30 lbs they had the wrong filter on it.
  11. gtxrt

    Oil pressure irregular

    did you replace the oil filter with the same one.
  12. gtxrt

    head flow numbers.

    it was a 425 cubic inch nail head bored .038 thou over and stroked from a stock 3.64 stroke to a 3.75 stroke =446 cubic inch sound familiar lol. went from a 6.22 stock rod to a chevy 6.535 rod.
  14. gtxrt

    head flow numbers.

    sold the car a few years back with a little more head work on different heads and a one size bigger cam 235-239 plus a few little other things never went back to dyno or track. maybe could have went to 12.2 et maybe on a good day.
  15. gtxrt

    head flow numbers.

    12.38 with a 2-speed trany and 3.23 gears 26 inch tire though. 1.5 exhaust valve. when i said shift not shifts at 5200-5300 lol
  16. gtxrt

    head flow numbers.

    to make the best et I would shift at 5200-5300 rpms.
  17. gtxrt

    head flow numbers.

    well believe it or not the engine at 446 cubic inch made 430 hp and 550 tq at 3700 rpms. with a 230-235 solid lifter cam.
  18. gtxrt

    head flow numbers.

    .430 was stock. am running .517 lift
  20. gtxrt

    head flow numbers.

    let me reword this. even if koffels numbers are on the big side the .500 and .600 numbers were in the more normal range.
  21. gtxrt

    head flow numbers.

    it ran really good with those heads just wanted to get the .500 lift to 218-220 flow and .550 lift to 223-225. if it all it takes is to un shroud them. the numbers were really good to .400 lift then it seems they went bad.
  22. gtxrt

    head flow numbers.

    any advice ?
  23. gtxrt

    head flow numbers.

    wondering if the intake valve just needs to be more un shrouded. the exhaust numbers are good
  24. gtxrt

    head flow numbers.

    what ever flow bench the .500 lift above numbers will never be good
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