HS 1.65s with stock valve covers ?

[grand camino]

Just bought a set of HS 1.65's for my stock,fully ported,and clearanced , heads...tech guy at HS said he's 90% sure they will clear v/cover               hmm...90%,does that mean it will only break 10% of my new rockers?

[earlbrown]

I'm 99% sure you won't even be able to bolt down the valve covers.


  It's not a matter of breaking rockers, it's that the roller rockers are taller than stock rockers and need more room.

The fix is either taller valve covers or valve cover spacers.

[PacecarTA]

Im 100% sure they wont clear
youll need valve cover spacers ,  RJC ...or ebay has them cheaper
and even with the spacer , if you glue them to head you might even need to run a thick VC gasket

[grand camino]

 Thanks guys...i was pretty sure i had read that i would need taller... I read that spacer can/will leak...just redid the engine..spent many $'s....see new sig...whats another 200. for v/covers 

[Forzfed]

Won't fit!  Spacers if done right won't leak, my spacers don't leak.

[daveismissing]

Just musing out loud- Would two piece valve covers, where the lid is just a flat lid be useful on our cars?

[Forzfed]

That is actually a good idea.  A two piece where you can seal the bottom and have like an insert slide into the bottom half would be awesome.

[Steve Wood]

Pretty sure there are two piece valve covers available for some cars.  Makes it easy to check valves and such without spilling oil all over the place.  I think the tops are o-ringed.  then you could use spacers on top for additional clearance if required.

Bottoms should be o-ringed as well for a good seal.

[Forzfed]

Yes, you are right Steve.  The top unscrews and the side skirts stay and the rest stay mounted.  I remember M/T had them for small block Chevy's