Engine Numbers

[stovebolt_six]

Okay fellas, I've found two more  engine numbers for you "numbers gurus" to decode if you would and they are as follows:

1)   FI228 YS
2)   VII23WA

Thanks in advance...Clint

[1968RSZ28]

Clint -

Both are truck engines.  YS = 1966 or 1968 327 cid engine.  WA could be a 283, 307, or 350 cid engine depending on the block casting date.  If you know the block casting dates we can narrow it down for you.

Paul  

[bertfam]

"YS" was used in Chevrolet Trucks from 1965 through 1969 in a few configurations:

1965 - 283/185
1966 - 1967 - 327/220
1968 - 327/240
1969 - 396/310

The "WA" was also used in Chevrolet Trucks from 1965-1969 in the following configurations:

1965 - 1967 - 283/175
1968 - 307/200
1969 - 350/255

You'll need to get the date code to see which engine yours is.

Ed

[RAfbody]

I would have to think the F1228YS would be the 65  or 66 engine since the assembly plant code is "F" instead of "V".  I don't remember the date the flint engine plant changed from F to V but I know it had changed by 1967.

[JohnZ]

The Flint V-8 prefix changed from "F" to "V" at the beginning of the 1967 model year.