V6 Engine Identification And Removal?

I have an engine block that I think is a 225 V6 but I am struggling to verify this.

On the passenger side there is a stamping with the letters KN H.

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The valve covers have the 'Firing ORDER 165432'

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How best to remove the engine block?

Should I put the intake manifold back on and attach a plate to the carb area for the engine lift?

Thanks!

 

On the block behind the intake manifold top of the bellhousing is the casting number

 

Wasn't this put in the tech forum at some point? https://www.nmr.mgh.harvard.edu/~reese/BuickV6CastingNumbersandInternalSpecs.pdf

I would just put a strong chain between two opposite corners of where the manifold bolts in and lift from that. The 225 is quite light as engines go. Just make sure you can lift high enough to clear the grille. The front clip comes off very easily, making engine removal very easy. You might want to do that if you have a little extra time.

 

KNH in that Sequence , doesn't seem to make any since in the number codes I have..........KH =1964 / LH=1965 / MH=1966 / NH=1967...........A single "H" can also mean 9:1 compression

Block #'s for a 225.............................Sorrow not a complete science in decoding these engines.
· 1358435

· 1396736

· 1381623

· 1375162

· 991503

 

It's all good info..........most of what Tim posted I also have but mainly covers the even fired later V6 motors.......the codes stamped into the block on the passenger side block surface are a little harder to decipher but point more directly to its origin.....Here are some more codes.............Normally the "N" followed by and "H" would be a 67 motor with 9:1 compression...............I guess the KNH would also work as a 2-barreled 225 / 1967 / 9:1 Compression. Just the Sequence is scrambled.................


· N-1967

· P-1968

· R-1969

· S-1970

· T-1971



Letter to designate Engine Compression Ratio:




· H-V6-225 9.0 to 1 C.R. (2bbl carb)

· Y-V6-225 9.0 to 1 Marine (Low Profile) (2 bbl carb)

· Z-V6-225 9.0 to1 Marine (High Profile) 2bbl carb

· K V6-225 7.6 to 1 (2bbl carb)

· L V6-225 7.4 to 1 (2bbl carb)

 

Thanks all for the information and where to dig through the grease!!!

Looks like it is the 225 V6 Oddfire that I was expecting!

1381623

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