Valve seals

[classical glass]

What is the best procedure to replace all the valve seals on a 427 side oiler? Also what would be the the seal of choice?
Thanks....

[FWB]

depends, "Best" is subject to opinion, heads on or heads off, with the correct tools or backyard caveman style.....without knowing tools avail best is subjective

[classical glass]

I really don't want to pull the heads I would like to install them on the car. I purchased a valve spring compression tool that will slide over the rocker shaft. I have installed seals on GM motors before so I know the basics. My main question is what is the best way to index the engine so both valves are closed. I do have a air pressure spark plug adapter tool to keep the valves closed when the valve springs are removed.
Thank

[Grubby]

There is a tool that screws into the spark plug hole and allows you to use compressed air to hold the valves shut. It makes me pucker, but I have used it with success on several engines. The air pressure actually pushes the piston to the bottom of the stroke - pucker.

The other option is to put the piston at TDC and feed some small cord thru the spark plug hole to hold the valve up. I have not personally used this approach.

There is no way I would pull the heads just for seals.

John

[Grubby]

On an FE if you loosen the rocker shaft all the valves will close.

[HTM101]

Originally Posted by classical glass

I really don't want to pull the heads I would like to install them on the car. I purchased a valve spring compression tool that will slide over the rocker shaft. I have installed seals on GM motors before so I know the basics. My main question is what is the best way to index the engine so both valves are closed. I do have a air pressure spark plug adapter tool to keep the valves closed when the valve springs are removed.
Thank

I replaced all springs, locators, retainers, locks and seals on my engine a few weeks back. PM me if you'd like, and I'll be glad to help with your questions.

David

[FWB]

with factory heads and the larger plug hole, the nylon rope works good, you can even get your finger in there too for a little rope assistance.

with aftermarket heads and peanut plugs, the compressed air is probably the path of least resistance.