Originally Posted by MoonshineMattK
Originally Posted by mr_340
Originally Posted by AndyF
If the Mopar engineers had been thinking they would have cast the bosses in the side for the cross bolts and just left them unmachined on the production blocks. It would not have cost any more money but it would've made the blocks capable of being properly cross bolted down the road. They could sold cross bolted wedge blocks over the counter thru Direct Connection. They just weren't thinking that far ahead.

They did produce some cross bolted wedge blocks for NASCAR so they knew how to do it. They just never convinced the production guys to add the material for the bosses.


I have a 426 marine block that has the bosses cast in to the sides like a Hemi block. They are not machined, but the bosses are there.


That's a neat piece you've got there. Always something new. If you have pictures of the lifter valley I'm curious to see if it has bosses for the hemi style head stud.


Unfortunately, no. Just the standard wedge valley. This is about the only photo I took years ago that shows anything up top. It has bosses at the back for some sort of water connections. Maybe these were machined out for truck or industrial applications?

426 Block No 8.jpg426 Block Rear Boss.jpg

Floyd Lippencott IV