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maybe the old man had figured out that a thin wall would dissipate heat way back then , because my understanding is thats what brought about the thinner 350 castings that came later IDK......

i was always curious why there was no evidence of core shift on the 307 blocks , an old man that helped me years ago loved the 307 block because of this , he bored them to a 350 and swore they were...

the easiest way to detect core shift on a SBC is to look at the machined surface around the front cam journal where the gear runs , if that surface is the same thickness all the way around its...

lizard , from my experience , the early 350 casting with just 010 were the best , they had less core shift ( did your guy in the foundry explain this ) and could easily be bored .060 and have good...

i have herd of this before but i dont know about the nickle part , the 509 block with only 2 freeze plugs per side instead of 3 was the best IMO , and had less core shift and most can be bored .060...

its like every thing else over4t , its according to what you are trying to do with it , i did some work for a guy that asphalt raced a limited type car that required a bone stock crank shaft , every...

only time i have had to use a smaller base circle cam was with a 4 inch stroke , that 3,5 stroke should easily clear a standard cam.......

all that is good advice billet , one thing to add , i cant remember where we got them , my dad may have made them , but we used still spacers in the mains and aligned bored them to 350 size , we also...