Originally Posted by redfish211
I will make this short and sweet.
I found a good vortec 880 block.. with everything included except for the crank and main caps. Will be purchasing it for about 100 bucks. Could I use mains from another 350 5.7 block? Thanks in advance!
Too much money for a block w/o caps! The caps are individual to each engine, the caps cannot be swapped from one engine to the next. Besides, you can find complete L31 engines for $150-$250.
If it was cheaper and you needed a strong bottom end you could convert it- IF it's a 2-bolt bottom end now- to a splayed cap 4-bolt by using caps available from the aftermarket. But the cost for the caps (especially the rear main cap), including the line bore and hone it will need, will be way more than you could buy a complete 4-bolt Vortec or earlier SBC.
Bottom line- PASS!