Technical Chevy engine ID

A friend of mine who is not very good with a computer picked up a Chevy V-8 at an estate sale. He wants to know what he has. My books are too old to help him. The casting number is 3970010. On the pad on the front of the engine it has T8J506298 and V1118TWY stamped on it. Thanks in advance for your help, Daryl

 

78 3/4 ton truck 165 horse

 

350 c.i.

 

....and the truck was built in Wisconsin.

Just another (most likely) 4 bolt main truck 350 block. They're getting harder to find these days.

 

010 is a 350 casting which was used for both 2 and 4 bolt blocks, look on the
sides of the block and by the bell housing for a casting S010 if so it a 4 bolt

http://chevymania.com/partsid/suffixresults.cfm
<TABLE cellSpacing=1 cellPadding=0 width=600><TBODY><TR bgColor=#eeeeee><TD align=center>TWY</TD><TD align=center>78</TD><TD align=center>350</TD><TD>Truck</TD><TD>165</TD><TD>LS-9</TD><TD>TH 350</TD><TD>4-Brl</TD></TR></TBODY></TABLE>

 

Another good reason to build a big block!

 

yes old well aged good 4 bolt cores are getting hard to find, but a 4 bolt 350 , not really if some one is willing and doesn't mind new chevy racing sells a all brand new casting low compression 2 piece rear main early 4 bolt 350 in 290 hp trim with a ls 1 like grind camshaft in it, long block though jegs and summit for just over $2.100.00 http://www.jegs.com/i/Chevrolet-Performance/809/12499529/10002/-1?parentProductId=755609

with todays junk for gas and our very light old cars it has been more then enough power for several builds I have done