Need help with my exhaust cross heads!

[US6x4]

I'm trying to swap in my Jacobs exhaust cross heads but they interfere with the rocker box no matter which way I twist them. Should I force them on with a hammer or do the rocker boxes have to come off? I don't have rocker box gaskets.




@WillWagner

 

[US6x4]

I do have a set of 013294 jake gaskets which may be the same as rocker box gaskets so I could do the cross head swap, rocker adjuster swap and stud swap while I wait for another set of gaskets...

 

[WillWagner]

You need to take the boxes off to install the dual piston cross heads.

 

[simp5782]

Jakes and rockers are not the same gasket

 

[US6x4]

You need to take the boxes off to install the dual piston cross heads.

Ok, good to know - thanks for the response.
Guess my install will get delayed a bit.

 

[US6x4]

Jakes and rockers are not the same gasket

Any ideas on the part number for the rocker box gasket?

 

[simp5782]

Any ideas on the part number for the rocker box gasket?

For the NTC400 they are # 3017750. Which is what you should be using. Heads between small and big cam are the same. Some rocker box differences but not much.

 

[US6x4]

Bingo! Thanks for that number. The last digit make a big difference in searches...