[Murf]

Thanks Larry do the ones on the right in your pic only have the upper part where the link bar is like the ones on the top in my pic? They look about the same to me.

That single SpeedPro in my pic seems to have the band higher than the older Comps and closer in height to the one on top in my pic.

Part of what is screwing me up is that people are talking a lot about base circle on the Speed Pros but I don’t remember much talk about it with the older lifters with the lower band. How’s that for a run on sentence? 😀

My

[Formulajones]

Originally Posted by Murf

Thanks Larry do the ones on the right in your pic only have the upper part where the link bar is like the ones on the top in my pic? They look about the same to me.

That single SpeedPro in my pic seems to have the band higher than the older Comps and closer in height to the one on top in my pic.

Part of what is screwing me up is that people are talking a lot about base circle on the Speed Pros but I don’t remember much talk about it with the older lifters with the lower band. How’s that for a run on sentence? 😀

My

I believe it is the same as your pic Murf. I have a couple pics of them I'll have to fish for and see if I have a back side shot.

LOL I understand what you are saying. I don't recall any discussion about base circles years ago with the older lifters. Oddly enough the short set on the left of my picture about 15 years ago were run in a 455 with a 254/262 @ .050 hydraulic roller that was around .600 lift and those things were perfectly quiet.