70 Judge RAIV and V continuation

[Steve_Hoog]

Tom

This is way out of my league, I can only go on what you and Lance say. I just called it RAV to be calling it something, it's definitely not a normal motor if it has crossed mains.

The numbers Lance has may help Mike, I don't know. I'm going back through my books tonight, but I don't ever remember seeing anything like Mike posted.

Steve

[pontiac6269]

The numbers on the front of the block are part #. Numbers on the back are the casting #. 1969 numbers are, part #545686, casting #9792968. 1970 numbers are part #545686, casting #481708. The ram air experimental 428 block is cast GME 9792968 and stamped RA-38. Angle bolt428 block cast #545887 dated (F309)June 30, 1969. All Ram Air V blocks would have a distributor hole that is larger then all other Pontiac blocks.

[tjs44]

Super duty 455 blocks have the larger dist hole also.FYI,Tom

[sixtiesmuscle]

Thanks, but, still no info on a part number 545687. Any idea what that is? There are no other numbers on this block.

[JLP]

Can't help on the # you gave. However, most of the other numbers are here. It is regarded as a good web site for pontiac number crunching info. It has the 2 letter codes for the RA V but no casting #'s.
[img]/ubbthreads/images/graemlins/frown.gif[/img]
http://www.wallaceracing.com/cgi-bin/engine3.cgi

[Steve_Hoog]

Totally my bad on Lance's motors, he did say that he let go of the torn up block. That may have been the 428. His others are 400's.

Mike... I am on page 214 of McCarthy's Performance book. There is a 400 block he talks about with "545686". Very close indeed. I think some of the info that pontiac6269 guy posted may be right off this page.

My question would be, do the production numbers run sequential on your block like the WY's I've been getting info on. Difference may just be the year usage intended.