Small chamber Edelbrock heads on a 340

[joes68340s]

Hi, is anyone running the closed chamber heads on there 340. My engine has a positve deck of about 0.18. Thanks

 

[AdamR]

you will need a thick .050" head gasket or the RPM 340 heads.

 

[duster340]

Hi, is anyone running the closed chamber heads on there 340. My engine has a positve deck of about 0.18. Thanks

that would work with a .060thick headgasket wouldnt try it with anything less..
i have the 340heads that are machined for pistons above the deck but looking back it feels alitle like painting myself into a corner

 

[joes68340s]

Yes thats why I want to run the closed chamber as I have another zero decked shortblock for the future. Thanks

 

[jefflock]

What is the advantage of the closed chamber heads instead of the ones made for the 340? Jeff

 

[duster340]

diference is that the ones made for the 340 are cut like stock type heads
the 340heads work well with pistons that have a positive deckheight since the cutout is there to make clearance for the pistons reason for using a thick gasket with popup pistons is that if/when you build another shortblock you can build it with modern/better/lighter pistons at zerodeck
hope it makes some sense

 

[scamp 408]

I run the small chamber .My pistons stick out around .010 I use the .060 from sce.I did run them with a .045 no problems but the comp was too high.

 

[rumblefish360]

.035 is close. (pump) Octane issues huh. I can see that.