273 rockers on 340----T/A pushrods?

Some folks have been able to use the T/A pushrods but I usually find that they are too long when using the 273 rockers with hydraulic lifters. I would suggest measuring the actual required length to see if the T/A pushrods will work. If they do, great, if not, have Smitth Bros or Manton make you the correct length pushrods.