Ring end gaps?

Discussion in 'Race 400/430/455' started by GS Kubisch, Apr 6, 2002.

  1. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    What are you guys using for end gap on your file-fit rings?
    Anybody going to .025 or so on he second ring,seems to be something people are trying lately,
  2. Jim Weise

    Jim Weise 1000+HP

    end gaps..

    Yes, that is the common thinking these days... but the last set I did, still had the spec at .010-.012 ....

    I ran them that way, no problems, always had good luck with the Plasma rings.

  3. GS Kubisch

    GS Kubisch THE "CUT-UP" BUICK

    Thanks for the reply Jim...
    The people that do my machine work have run Olds engines for years and the last Olds 455 they built last year used a .025 gap on the second ring,motor was sound and runs well,but I think the benefit would be on a motor with an air pump,I've even heard of excluding the second ring all together.

    Just looking for all the power I can find for the boys in GS Pro Street this year:Brow:
  4. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member


    Always have gone .017-.018" on top and .011-.013" on bottom,never a problem and seemed the best for power.Now,with a vacuum pump I don't know.Sonny tried the no 2'nd ring for a while and did'nt like it,give him a call.He's back to the conventional way.
  5. ijzane

    ijzane Well-Known Member

    We used Tri- City Competition rings with both at .017-.018. With over 220 runs on our "stocker" engine, it just went it's fastest last weekend. Our second ring is also back-cut and provides little tension. Keeps going faster all the time... 11.78 @ 110.63

    Good luck

Share This Page