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  1. Bill Dedman

    ring end gap factor

    I need a headlight for a 78 Pinto. "Was that a V8 or a 6"??
  2. Bill Dedman

    ring end gap factor

    Nothing. In fact, they didn't ask... so, I asked them. I learned one thing; you ask 5 people what the proper end gap is for your particular engine (having given them the specs and all other pertinent parameters, such as the amount of boost, etc) and you'll get 5 different answers. I...
  3. Bill Dedman

    ring end gap factor

    The ring manufacturers don't have a clue as to what kind of a motor you are building; it may be normally-apirated, or it could be a nitrous-assisted, turbocharged, or a supercharged motor. Rings "grrow" in length as they get hot from combustion.. The rings that are exposed to the heat from a...
  4. Bill Dedman

    ring end gap factor

    Thanks Bob. We broke in the cam with some antique, worn out, 318 springs, and after running it at 2,500 rpm for 30 minutes, it's showing between 170 and 175 pounds compression pressure on all 6 cylinders, and we're happy with that, since it's a low-compression turbo motor. I appreciate your...
  5. Bill Dedman

    ring end gap factor

    I don't know if that formula takes into consideration the additional gap necessary on turbocharged, supercharged, and N20 motors. All the additional heat generated by forced induction, changes the parameters for end gaps, I think.
  6. Bill Dedman

    ring end gap factor

    We did... I learned that, contrary to my previous opinion, the larger compression ring gap (according to all the "good" information I could uncover, for a turbo application) goes on the second ring, NOT the top one... Like I said, I learn something every day.](*,) We ended up with .020" on...
  7. Bill Dedman

    ring end gap factor

    I never heard of an "end gap factor." I learn something every day...:sad7: Sorry...
  8. Bill Dedman

    ring end gap factor

    I am no expert, by any means, but on a bore that big, I would really be afraid that the ring ends would butt at anything much over a cold engine.... Just sayin'... I have no experience with that, but jeesh... .004" is practically nothing...
  9. Bill Dedman

    Hemi Yes or No

    I think thst's because the NASCAR rules deny any other engine combinations, not because the small blocks are better.
  10. Bill Dedman

    stock 383 ET numbers?

    A 904 transmission is somewhat lighter than a 727. They never made a 904 that would bolt up to a BB or RB that I know of. Most small blocks had 904's except for early 340s.
  11. Bill Dedman

    stock 383 ET numbers?

    Bet your car will run at worst, a 13.90... IF it can get a bite... Good luck; tires are a lot better, now....
  12. Bill Dedman

    stock 383 ET numbers?

    I worked as a tech person at several drag strips bAck in the 1965-1969 period and ran the clocks a lot of the time, so I got to see first-hand, what the cars were turning. I paid attention. These cars I'm listing were BONE STOCK with street tires... NO SLICKS and were traction-limited to a...
  13. Bill Dedman

    340 or 360???

    If you want to race a Stock Class drag car, or build a killer, high specific output motor for NHRA's Competition Eliminator, a 340 is undoubetdly the better of the two for you. However, the 360's that run in NHRA's Stock Eliminator run just as fast as the 340s, even in Super Stock, but the 340...
  14. Bill Dedman

    340 or 360???

    Since you've decided on a 360, it would benefit you, I think, to look at the advantages of the L-A vs. Magnum motors, and vice-versa. The Magnums were introduced in 1992 or '93 (can't remember), so they've been around for at least sixteen years... plenty long enough for the junk-yards to be...
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