74swinger360
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Can i run 1.6 ratio roller rockers on stock heads. My lift is .510.
Can i run 1.6 roller rockers
- Thread starter 74swinger360
- Start date
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If your current lift is .510, then divide it by the rocker ratio of 1.5 then multiply by the new rocker ratio of 1.6 to get the new lift of .544.
.510 / 1.5 X 1.6 = .544.
Your heads must be able to handle this new valve lift. This means a valve spring rated to this lift and clearance under the valves retainers so it doesn't hit the guide at full lift.
Next up is clearance issues at the rockers "Arm pit" to retainer area and pushrods through the head. The holes may have to be enlarged.
.510 / 1.5 X 1.6 = .544.
Your heads must be able to handle this new valve lift. This means a valve spring rated to this lift and clearance under the valves retainers so it doesn't hit the guide at full lift.
Next up is clearance issues at the rockers "Arm pit" to retainer area and pushrods through the head. The holes may have to be enlarged.
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