Needing help from "Been there done that" types....

I blew up a customers 116 motor on Saturday. ....it let go at 5200 rpm.
Was tracing a slight tapping noise that would go away when running engine without #3 followers installed.

Threw #3 rod through the coolant jacket !
This was an engine he got me that I took apart and rebuilt, so it's down to me.
Shoulda stuck with my first gut feeling of pending problems of water damaged steel components...like rod bolts..... but they all checked clean and thicker than spec'.

Anyweather......he said he's like a 117 motor now that the 116 has broke.
I have ( two.)117 short blocks ( MPI.) of 1976/8 vintage, but the heads are gone .

Can we marry this 117 block to 116 heads ?
If not...I'll have to find a 116 block.


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