I think that Chevy had the195ci (Nova), 235ci (real standard), the 250ci
(only one with counter balances on the crank) and the 292ci straight six
motors in those days.

If you can identify it, you can use a part from the auto industry as long as
the belt pulley to drive "stuff " (generator/alternator, water pump) is the
same?

--
Bill Kiene
(old hot rodder)

Kiene's Fly Shop
Sacramento, CA
www.kiene.com

wrote in message
...

Tom- If it's the same as the 165hp mercruiser then it's a chevy/GM 250
cubic inch inline or straight six, very popular in the seventies, but
I've never heard of a 200hp version, I think the 200hp would be the
292cu. in. chevy/GMC I'm not sure if the balancer would be the same, but
you could check in the local auto parts. The 292 came in chevy/GMC vans
from 75' thru 78', probably came in trucks too. Good Luck. Tom.