According to 1968ss.com the 3814480 head is 70 cc and the 3884520 is 60 cc. Both have the same valve size.
SimS
Yeah, I need to find another 520 head. It’s a huge bummer.
I called Jasper today and they didn’t have any info on the number I gave them. Apparently records only go back 8 years or so. I was hoping to find out some more info on the 283 engine. But all is not lost.
I would think that Jasper would have noticed the difference in heads.
Oh well.
