Thread: Dual roller timing sets-Not for SBC hydro rollers??.

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I do think I vaguely remember something about the higher spring pressures with hydro roller cams and a effect of the dual roller chains.

you do not transfer much harmonics threw a chain nothing like a straight gear set with floating idlers.roller sets/roller cams i do them all the time with single bike chain sprocket step nose cams bbc / sbc long with double true roller sets . there is only about 110to 120 @ seat lbs less then 300tomax 350 open on stock and mild roller cams thats not any thing for a stock set to worry about . as for the stock chain set .i have engine that run 275to 350 on the seat and 800to 1200 open.i use the same roller chain sets i use in my hyd roller engines with no issues.they at one time did played with the key way for smog . but after market you can get 3 key way and 9 use them all the time . i seen cams with the nose pin off more then 8 degrees so all after market cams get checked when i build them end play has to be check but thats not a big deal just did one today use a button on older blocks or new blocks with out step nose cams keep the cam from walking out . with the step nose cams retainer plate. this still need to be check same with fords and other that use this setup i seen the plate and top gear not fit . i cut many top gears to get the chain to track true as well. nice to have a lathe