you need a 350 put the 305 in the junk yard How long has the 305 lasted? Is it strong enough for you? If you need/want more power, go for a 350. If it's going to get extreme service (racing, heavy hauling), you might need the 4 bolt main, but probably not if it's just normal driving.
There are no castings that were used exclusively for 4 bolt main applications.
NO.
usually
Almost certainly would be a four bolt main block.
it is a four bolt square pattern.
Are you referring to the main caps? If you are some had two bolt mains, and some had four bolt mains.
it should as they are the same year range it dossent matter if its a auto or a standard trand 2wd or 4wd
None. The four bolt main block is thought to be more rigid at higher loads.
What is the head bolt torque for a 1997 chevy lumina four cylinder?
A 350 with four bolt main caps is known as the "double-oh ten block." The last four numbers on the casting are 0010.
Probably.
The main bearing caps will have four ( 4 ) bolts instead of two ( 2 ) they will be side by side. A four bolt 350 engine is more common in the bigger truck series ?