Yamato 80/102

[rabbitears2]

My friend recently purchased a modified Yamato. How can we tell if it is an 80 or 102. There is no gas tank on it. There is however a 2 didgit number stamped on the back plate were the spark plugs are either a 14 or 15. I have a 102 stock that has a 14 or 15 also. What is the best way to determine if the modified engine is an 80 or 102? Any guidance would be appreciated. Thanks
We were hoping for a 102 so we could run it in the 500mod class.

[Ram4x4]

Y80 has two water intake holes on the snout, 102 has one.

[rabbitears2]

Thanks. Is there any other ways to distinguish between the 2?

[ZUL8TR]

Yes look at the cylinder head bolt pattern, the 80 has a slanted bolt pattern across each side of the spark plug as well as slanted pattern for the 2 bolts in the middle between cylinders. The 102 and 302 have no cross slant in the pattern. There are other differences.

[rsdfour]

If it looks like you're 102 that is what it is
Hope so

[Howie Nichols]

Post a pic of the new motor and people can tell you for sure....