Does anyone know where I can find dimensions for small block buicks, example rod length, deck height etc
Deck Height - 10.18" Rod length - 6.38" Bore - 3.80" Stroke - 3.85" Not sure of the physical outside dimensions - if that's what you're also looking for.
My understanding is that the "small block Buick" has at least two different deck heights. The 350 is the tallest, all others are shorter. (but I don't know how much shorter) Bore centers are 4.24". I'm no help at all with rod lengths.