Air operated Snap On valve spring compressor thoughts?

[racer1355inpa]

Any engine builders on here own or ever use the Snap On (Blue Point) air operated valve spring compressor they offer. Part number is CF700C. Just wanted some opinions on strength. Looking to do sbc heads with solid flat tappet to full roller springs.

[fastford]

i got by on most by cranking the air psi up, but did blow a seal on some real strong ones one time. I have a heavy old school manual one I use on those now.

[powerslide]

I'm sure it will be fine on any flat tappet spring. But the roller springs it will struggle. We built one out of a big c-clamp

[SRXSRULE]

I have one I would sell. I have to check but I think its that same part number. Eric