273 Rocker on 340

[Kendog 170]

I thought you said you had Edelbrock heads?

I tried stock non-adjustable on mine too, no go.

What were your issues? I've been running this way a few years now but haven't put maybe 4k miles as of yet.

 

[Uncle Bob]

What were your issues? I've been running this way a few years now but haven't put maybe 4k miles as of yet.

They hit the springs too. IIRC they wouldn't even get to the point where the shaft would bolt to the head.

 

[Kendog 170]

60971 Heads? One of my valve covers is leaking so I will have to check it out while replacing the gasket. I built the motor myself and did not see anything but now I will double check.
Edelbrock 60179 Edelbrock Performer RPM Cylinder Heads | Summit Racing

 

[Uncle Bob]

60971 Heads? One of my valve covers is leaking so I will have to check it out while replacing the gasket. I built the motor myself and did not see anything but now I will double check.
Edelbrock 60179 Edelbrock Performer RPM Cylinder Heads | Summit Racing

I just realized it could be different because my engine is a 360 and yours is a 340 so they are different heads. I think.

 

[Kendog 170]

Yes the 340 piston are above deck. Have to use 60971. I'll still check things anyway.

 

[Kendog 170]

They hit the springs too. IIRC they wouldn't even get to the point where the shaft would bolt to the head.

So, I pulled one of the rocker assemblies off last night. I was worried after comments on clearance issues. Last year I replaced my original 340 arms with Eclin rockers so I don't have an original at this point to compare but all looks good to me. Looks like there is a clearance notch cast into them as well.

 

[Demonracer]

If I remember correctly, some of the DC and MP, and possibly some other after market HP rockers were stamped to clear larger springs.

 

[Uncle Bob]

If I remember correctly, so of the DC and MP, and possibly some other after market HP rockers were stamped to clear larger springs.

the ones that didn't work for me are factory junk from 1978