Not small block but.
The last Custom Diamonds I purchased was at 1.32 which didn't need oil rail supports. The Current Wiseco's at 1.29 do need them. So somewere in between...

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]