For sale i have a 350 4 bolt main block.
GM part #: 3970010 high nickel casting
This block is used and in good condition.
Was machined to clear a 400 sbc crank.
Bored 4.030
There is about 4,000 miles on this block since machine work was done.
No problems with this block, one cylinder wall has some slight rust or residue when i had the complete engine in storage.
Going with another combo, so i do not need this block.
ARP studs, washers, nuts for main caps.
New freeze out plugs.
Block is filled half way with jacket filler to strengthen cylinder walls, this was used for drag race application and some street time.
Never ran hot or over heated.
Hottest the engine ever got was 190F.
Asking $500.00 or best reasonable offer.
Email or text me for any questions.
t4carbsandparts@gmail.com
(908) 227-3308 Derek