Pinned rocker studs?

[Skip FIx]

So did the Z-11s have factory pinned rocker studs? 3/8 or 7/16?

 

[427John]

Skip the Z-11 heads for sale on the hamb have screw in studs,don't know if that's factory though.Some good pics though.

 

[Skip FIx]

Thanks.

 

[Don Jacks]

I think that I read that the reason for the Z11's squared off valve covers was to clear the push rod guide plates .If true,then the Z heads would have had screw in studs,not pinned.Some body like Russ would know for sure.

 

[nana1962409]

Don I think the z11 guide plates bolt on along the top of the head just below the valve cover rail not under the studs. It’s been a while since I have seen a set of z11 heads in person but that’s how I remember them.

 

[63 dream'n]

https://www.mecum.com/lots/FL0117-276105/impala-z11-nos-heads-and-valves/

Looks like screw in studs..... and guide plate mounting as stated

 

[Blk61409]

 

[Phil Reed]

Hey Pops....is that my engine?????

 

[rstreet]

Hey Pops....is that my engine?????

I doubt it as you blowed one up last year idling at 6,000 in the trailer
Robert

 

[Iowa 409 Guy]

6,000?????

 

[Barry Taylor]

And in reverse no less!!!! People were scrambling like a bunch of ducks on the water that Ray just walked up on!!

 

[Blk61409]

No, not yours, 3rd back up!

 

[Skip FIx]

Thanks for the info guys.

 

[427John]

Are the flame marks evidence of flame hardening the guide slots?