Rocker ratio

[BigBlueIron]

Anyone ever mix 1.73 and 1.76 rockers to help crutch a camshaft? Say a single pattern that your stuck using.

 I know not hardly enough difference in ratio to be worth it or even notice a difference.

[blykins]

Depending on the camshaft, you wouldn't see much difference at all.   On something like a .500" cam, you're looking at about .009" difference.  On a .600" lift cam, you're looking at about .010".  In some instances a higher rocker ratio will accelerate the valve opening quicker, but going from 1.73 to 1.76 doesn't have much there.

[GerryP]

Anyone ever mix 1.73 and 1.76 rockers to help crutch a camshaft?...

That's within machining tolerance.  It's an insignificant difference.  If you have a solid cam, you can always tighten or loosen lash to test affects.  You can't do that with hydraulics, though.

[Rory428]

Depending on the camshaft, you wouldn't see much difference at all.   On something like a .500" cam, you're looking at about .009" difference.  On a .600" lift cam, you're looking at about .010".  In some instances a higher rocker ratio will accelerate the valve opening quicker, but going from 1.73 to 1.76 doesn't have much there.

  And thats assuming the rocker ratio is actually the same as advertised, which at least with OE rockers, is rarely the case. On my 302 Mustang Stock Eliminator car, the advertised rocker ratio is 1.60, in testing dozens, I never found any even close to spec, the majority were 1.53-1.54.