1967 061 head engine combos
 

Starting a thread for 1967 061 head combos. Which are a fairly unusually one year only head with a mix of features from 670 and later heads. I do not know much about them.

Here is the starting question pulled from another thread for a starting place to help Jeff out.
____________________________________. :)

Can you point me in the right direction to help decide on the best cam for my engine build? I tried starting a new thread, but it wouldn't let me for some reason..
I have a 69 Firebird purchasedbin 2015.. It was a complete car, with a 400 in it... prior to purchasing the car, I bought a pulled 400 motor. Disassembled it and sent it out to be inspected, machined, balanced and readied for me to rebuild it. Right or wrong, I bought a pair of 061 Heads that were rebuilt, but never installed due to a family crisis.. this was 7 years ago.
Now, my last kid has gone off to college and I want to resume what I started. I had previously purchased everything needed for the rebuild, other than the Cam and Lifter package..

Any thoughts on the best direction to head in with the 061 heads? All parts were oiled and wrapped and recently inspected with no issues.

Thanks for any advice.

Jeff
Any input would be appreciated.[/QUOTE]

If you do a search on here. I think there a more than a few discussions on those heads. I believe they are close to 067 heads but have press in studs. From what I read, they take porting pretty well.

These heads do not have screw in rocker studs and have a bit more of a open chamber then the RA4 heads, which if your running on the edge of too much cylinder pressure for your cam pick will make ping and knock more likely.

I am running 061 heads on zero deck 400. I put did screw in studs, pc seals. 9.6 compression. Cam is 068 high lift from Spotts. Runs really well and zero issues with pinging or detonation. I’m real happy with the heads.

I was going to suggest an 068 cam also. I guess you need to run the numbers and see where the compression will be.

I'll second whatever Jay S recommends.

IMO the 068 is a great choice for many applications when used with high lift rocker arms. Better choices are out there that will mimick the 068 and use standard rocker arms.

Bart started a thread specifically about the 068 cam, been a while.
It has many characteristics that make it a great choice for many applications.

This combo (minus the zero deck) was close to what was in my very first car, a 1966 GTO. The guy who sold it to me had blown up the 389 and got the 400 out of a Catalina for $150. I put a tripower on it and left the 066 cam in place and the car was brutally quick. (3:55 gears/4 speed). Ran really, really strong. Someone had done the studs and poly locks on the heads when it was still in the Catalina. Go figure.

IRC, that Spotts high lift 068 is 214/[email protected]” .443/.465 cam, probably the same as the Summit 2801, and like grinds. Converting it to screw in studs was a good idea.