Per my post on your Rod question ,,, I have run SB Chevys for over 20 years ( yea I'm Old
I have run all the different blocks ,,, The one I perfer , and as a matter of fact I still have one new , never been used ( along with a lot of other SB stuff ) is a 2 bolt Chevy Bow Tie ( 2 bolt was thicker in the main area ) that has been converted to 4 bolt steel caps , boered to 4.130 ( I never take them all the way out to allow for future re-builds and boering ) decked , cleared for Groden Alumin Bilet 6"rods with a 3.750 stroke and 350 mains ,,, it was for a one piece seal crank but converted over for a 2 piece seal , so it can use any style crank. --- I bought it over 10 years ago when Chey used real metal

--- My plans wer to build another SB for back up but the 421 never broke other than spining a bearing after 400 passes

--and now I'm a Big Block racer ( Sorry Jason ) 9.90 @ 168

---- In case you are interested ,, I'll probally sell this spring in parts or I might even put together and sell complete ,,,, Block above , 3.750 BRC used crank , New 6 " Groden Alumin rods , Wiesco Pistons , Comp Cam , lifters new Jeff Jackson aluim oil pan , external pump , new ATI Dampner , new rings etc...every thing need to build a real killer SBC and These are my pride and Joy Small Block Heads , a set of 18 Degree Intake , 23 Degree exhaust heads with Jessel rocker arms ,, these were the heads/top end that Tom Martino set the C/A record at 7.77 prior to running Pro Stock , with Tom's sheet Metal intake that he used !!
Colorful Used to be SB racer !!