MTFCA Forum

I have a very nice early block with original standard lifters. I have a new set of adjustable lifters that are also marked std. How much clearance should I have using the new lifters? Or would it be best to go to the next size using the proper reamer? Thanks, John

How do the original lifters fit?

Just a very slight side to side movement, but not all have it. Mostly tight but one or two have very slight movement.