I need mercruiser 260 serial number

I have a 1981 Sea Ray SRV225 that I purchased last year. It had a mercruiser 260 in it, but had no mercruiser serial number anywhere; it did have brass freeze plugs!
When I need to order parts I need a serial #. Anyone have any suggestions
I had water & oil issue and said to myself I know nothing about this motor, probably not a boat motor. I decided not to put any more $ in an unknown motor. So I got a short block, honed and re-ringed, new bearings, new timing chain, new brass freeze plugs, and new marine cam.

Here is what I have now:
Crank Shaft:
3932442
1969-85 350 cast 2.45 2.10 3.48 replacement

Motor:
Block #: 3970014
1970-1976 Chevy 350

Front Block Stamps
16R509192 and T0602CMJ

Date? E12 76 (5/12/76)

Intake: 346250

Heads: 333882
74-80...350/400......76cc chambers

Distributor
Mallory YLU624AV
Cap 2090

Re: I need mercruiser 260 serial number

red85k100rs said:

I have a 1981 Sea Ray SRV225 that I purchased last year. It had a mercruiser 260 in it, but had no mercruiser serial number anywhere; it did have brass freeze plugs!
When I need to order parts I need a serial #. Anyone have any suggestions
I had water & oil issue and said to myself I know nothing about this motor, probably not a boat motor. I decided not to put any more $ in an unknown motor. So I got a short block, honed and re-ringed, new bearings, new timing chain, new brass freeze plugs, and new marine cam.

Here is what I have now:
Crank Shaft:
3932442
1969-85 350 cast 2.45 2.10 3.48 replacement

Motor:
Block #: 3970014
1970-1976 Chevy 350

Front Block Stamps
16R509192 and T0602CMJ

Date? E12 76 (5/12/76)

Intake: 346250

Heads: 333882
74-80...350/400......76cc chambers

Distributor
Mallory YLU624AV
Cap 2090

Click to expand...

Ayuh,... So what's the Question,....

You've got very little left of the original motor, so the original serial number's abit obsolete,...

Re: I need mercruiser 260 serial number

Your original engine would probably have been a 260 GM 350 V-8 1978-1982 serial nummber between 4908850 to 6218461. Depending on what your wanting to build and end up with I suggest going to Mercruiser Schematic Part Diagrams and determine which one you want to build.

Re: I need mercruiser 260 serial number

AllDodge said:

Your original engine would probably have been a 260 GM 350 V-8 1978-1982 serial nummber between 4908850 to 6218461. Depending on what your wanting to build and end up with I suggest going to Mercruiser Schematic Part Diagrams and determine which one you want to build.

Click to expand...

Mercruiser Schematic Part Diagrams. That is just the info I needed, Thanks so much
The motor is all built, installed in the boat, and run for about 1/2 hour on a garden hose. Interior gets put back in today, in the water tomorrow.... I hope.