[455Grandville]

Originally Posted by Ragtop Man

Nope, the "HD 301" blocks were leftover 303's that had been stacked in the shop, someplace.

I do wonder this: would hard-blocking a 301T block help with some of the strength issues?

Anxious to see how this one turns out. Have always regretted that Pontiac killed the traditional V-8 for the SBC in the Third Gen Firebird. The lighter V8 with the turbo woulda been a killer in that one.

Likewise, always wondered what a true 303 Turbo in the last of the Second Gen Firebirds would have been able to muster... with real Pontiac heads, a good crank and decent rods.

I have a complete Turbo 301 and a couple stocker 301s at my property but never tore 'em down; I'm told the 301 had fillet radius cranks and a beefed up block -