5V4 G in a VTA ST70

I found a cool looking NOS RCA 5V4 G in my batch of tubes. Is this a good rectifier for my (pre-built) VTA ST 70? Right now I'm using a JJ 5AR4 (installed after a NOS? Sylvania went south).

I searched around for that handy rectifier list Bob posted but couldn't find it.

Thanks.

(EDIT: According to eBay listings the 5V4 G is a GZ37 so I guess it's okay for the amp.)

Have you done the "yellow sheet" update?

If that's the mod involving diodes on the rectifier socket, no.

No. The 5v4 is not suitable for an ST70. The 5v4 is rated at 175mA. If you set the output tubes to 40mA then that is 160mA. You have to keep in mind the draw of the VTA board which is about 25mA. This equals 185mA. Since most tubes were rated a bit conservatively, it would probably work, but you would be running it on the hairy edge.