.030" longer push rods and where to find them.

Uuuuummm....... huh??

.250 is a quarter inch.

Or do you mean without the spacer rings?

My OE spacer rings are .200 wide.
.044" difference between the rockers installed. The aluminum blocks were too narrow didn't know at the time since no one i knew had a big block and the machine shop never returned the rocker spacers or hold downs.