My magic book says...

Engine type 617.912
Bore/Stroke mm(inches) 90.9/92.4 (3.57/3.64)
Compression 21:1
Firing Order 1-2-4-5-3
Horsepower 77bhp @ 4000rpm
Torque 115 lb/ft @ 2400rpm


Engine type 617.952
Bore/Stroke mm(inches) 90.9/92.4 (3.5/3.64)
Compression 21.5:1
Firing Order 1-2-4-5-3
Horsepower 120bhp @ 4350rpm
Torque 184 lb/ft @2400rpm

Hope this helps
Chris

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Chris

85 300 TD Wagon
51 Chevy 3100 Pick up
81 John Deere 2350 - The Workhorse
45 IH Farmall "A"
02 RM250