[screamingchief]

Originally Posted by importsmasher

The only answer I can come up with for the pushrods seeming too short is that whoever built the heads put valves that were too short in them.

Well first thing first,shorter valves would require shorter pushrods,not vice-versa.

Taller valves would thus require longer pushrods as SOP.

If you used the 9.130" to 9.170" "stock" length pushrods with the #46 heads,then that should be the right length,of course assuming the stock length valves are still in those heads.

Now a valve job can sink the valves a little deeper,and thus make the valves appear just a bit longer,but typically that's supposed to be dealt with in the process of a proper valve job.

And typically a head surfacing "clean-up" cut helps cancel out that problem as well.

What rocker arms are you using on this?

Anyhow,OE IH for the '73-'74 #46 heads should be 1.586" int./1.590" exh. as I recall.

Not sure what your problem is,but IMO it's always a good idea to convert to an adjustable valvetrain whenever practical.



HTH

Bret P.