Reply to "Identify rocker arm"

panteradougMember

It was and it still is. 1.73:1.

You multiply the cam lobe lift by the rocker arm ratio.

1.5 is a Chevy small block ratio. 1.7 for a Chevy BB, 427.

Ford 289-302-351w is 1.6.

With a .605 valve lift, you would have a .3479" lobe lift with a 1.73:1 ratio.

With a 1.70:1 ratio, the valve lift would be .595".

With a 1.80:1, it would be .629".

The duration of the cam stays the same. Just the lift varies with the change in rocker arm ratios.

6/8/156:59 PM

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