400 stroker or 440

Very interesting thread. I guess 72ScampTramp went 440. That is probaly the best pick given his application and situation.

Some additional information on the webbing of B vs RB blocks I got from 440 source. There is a lot of detailed explaination of these photos at that site that I have not included if you are interested.

First picture is a typical 440 RB block
Second picture is a typical 440 RB block built after 1976
Third picture is a typical B block (a 383 in this case)
Fourth picture is the 4230 Special 400 B block built in 71

As you can see there are not big differences in the first and third. And the post 76 440 had more beef. But it is obvious that the 4230 block is in a different league. This is why bracket racers run that block stroked to 451.

Happy Holidays

Ma Snart