ratio rockers

[Hoghead]

Found Rocker Arms Unlimited and awaiting an answer. This seems to be a reincarnation of the old Rocker Arm Specialists

Does anyone else make a higher ratio rocker arm?

At what point does the 3000 block need to be relieved for the exhaust valve - I recall around .430 but would appreciate confirmation

 

[steveg]

Denis Welch describes the small amount of block relief for their 1.65 rockers. I'm using the 1.60 rockers from Rocker Arm Specialists. They required no block relief. The only issue is the oiler banjo needed a couple of extra sealing washers to shim it up enough to clear the rocker.
See: https://www.pbase.com/stevegerow/image/98720470

 

[Hoghead]

Thanks for the tip
Awaiting an answer from Rocker Arm Specialists but at 1250.00 from Denis Welsh I will have to live with the stock ratio

 

[steveg]

Thanks for the tip
Awaiting an answer from Rocker Arm Specialists but at 1250.00 from Denis Welsh I will have to live with the stock ratio

Rocker Arm Specialist was in the $400 bracket in 2008.