79 Bob Glidden Small Block Pro Stock

AMC we started out with 305 mules
then 360 blocks 4.060 bores with short stroke 4 bolt main hd blocks arrived shortly
then hd 401 blocks with 4.165>4.1875> 4.25> 4.315 bores and strokes under 2 3/4
rods connected the crank pins and pistons together
NASCAR progression was similar several versions = 427
love those small bore 273 guys me- I'd run the largest legal bore
thanks bighead