Spot The Difference...

[mk1]

Dudes , i need your advice. Thinking of buying a 2nd. hand 701 engine. How do i tell the difference between 94-95 SN engine with (61x cylinder-61x cases) , and the 96-2007 RN engine with (61x cylinder-62T cases). Are they marked , can you tell the year , if so where do i look..... Thanks.

 

[Midlake Crisis]

61x cases = single carb, horizontally mounted intake manifold (sits on top like a lid)
62T cases = dual carb, vertically mounted intake manifold (mounts to side)

The cylinders can be mixed and matched, they are marked right between the two jugs on the intake side.

 

[bored&stroked]

Single or dual carb. Cylinders are the same for all 701 superjets.