906 heads on a 516 engine?

[cbarge]

That sounds great!
Yepp, I've blocked the heat riser with the Fel Pro 1214 valley pan and going to use the same when I switch the cylinder heads.
Is there any issues with the rocketarms, push rods or hydralic lifters when I go from 516 to 906?

No issues using the original pushrods,lifters.
I did however had to order correct length valve springs (my 906 heads did not have any and the springs on the old heads were beat.) Rocker arms,shafts all bolt on no problems.
BTW,Using an Eddy 625 CFM with electric choke. With a worn stock cam she still pulls hard.
Canuck-built car hence the red paint