There's another approach to building a short stroke tight-winding engine. Find a 350 4-bolt main bearing block, and a 3.1" stroke crankshaft for a 75-76 Monza 262 cubic inch V8 Casting # 354431. You'll end up with 311 cubic inches with a standard-bore 350 block. Use a set of 6" long large-journal H beam connecting rods and a set of Speed Pro hypereutectic flattop pistons for a 350. It might be necessary to adjust the compression height a little by machining the top of the piston level with the top of the block- - - -it's been awhile since I've built one of those engines and I don't remember if the compression height comes out exactly right.

Use the same 58 CC 305 heads, and a good cam, with either a Quadrajet carb jetted for a 305 or a small-CFM Carter AFB. You'll have a very responsive street engine that will respond well to a low-geared rear end with some awesome acceleration.
Have fun!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!