318 race engine 4104230-318 any info. on these engines?

I'm trying to find my source for this but I have 2 of the same engines:

on ends on 2, the other on 8.

The last number refers to the series in the casting, the amount of replications of the origional cast, so in your case it was the 11th copy.

If I'm not mistaken these are standard 318's out of a truck from 81 to 84.

BUT supposedly they come with factory flat tops specifically for the truck application. Willing to pull one of your heads to check for both of us?

Mine are both in cars and running ;)

I'll post that site as soon as I find it again...