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Old 05-23-2010 | 09:33 AM
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Tired Old Man
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Default RE: trying to identify A&M engine
ORIGINAL: Antique

Dammit Pat, I was never coming back to this forum...But
49ZN2 is a 4.2, 47ZN2 is a 3.7, 44 ZN is a 3.2...
The numbers are bore size in millimeters...[>:]
TKG, you were right...
To the best of my limited knowledge Gary never used copper plated Sachs rods...Gary's cranks still used/use pressed in drawn cup needle rollers. Genuine Sachs and all other real gassers use REAL caged rollers...

I thought about it more last night and you're right. The 44 is the 3.2. Thanks for fixing that. I meant to correct it before retiring but you know who that goes...
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