You could check the block serial number at mortec.com, but it's probably 4 bolt.
70 ft lbs
1500--2 bolt, 2500 4 bolt
4
It is a small block Chevy 350 engine with 6 bolt main caps.
NO.
Main bearing torque on 98 Chevy 350 4 bolt main?? The main bearing caps should be torqued to 70 ft. lbs.
yes
None. The four bolt main block is thought to be more rigid at higher loads.
If it's the factory engine, then it will be a 2-bolt main engine.
most Chevy trannys made for small blocks will bolt some additional information .... Chevy never made a 305 with a 4 bold main only 2 bolt main
That would be a 2-bolt main in that truck for sure.
usually