[HWYSTR455]

Do you know if the pushrod guide holes in heads were enlarged?

If you're happy with the way it runs now, maybe just leave it and just swap the timing set.

If you want to change it, that cam you have on hand should work good, and if you wanted, you could change to 1.65 rockers to bump it a little. But you would have to ensure the pushrod holes have been opened up.

Since the bottom end is stock, and you are running iron heads, I probably wouldn't suggest going too crazy with it. A RA4 type cam would work, but doubt it will give you a noticeable difference over the Ultradyne you have.



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