can you tell me what this is.... front pad #

tryin to decode the 350 and see what it came out of, and havin a hard time cause of that 3rd number/letter/symbol.... it cant be a 1 since it dosent look like the other 1's in the number right? dosent look like anything else i think, ive tried lookin up the how to's and look the number up but cant seem to find anything... help a brother out.

thanks in advance

 

maybe an I ??

 

Use the casting number on the left rear at the bell housing.

 

all you should need to look up is the suffix code of tax

<table border="0" width="99%"><tbody><tr><td width="14%">TAX </td> <td width="12%"> 1970 </td> <td width="12%"> 350 </td> <td width="15%"> 255 </td> <td width="11%"> 4 </td> <td width="36%"> convfwd cabs, a/t </td> </tr> <tr> <td width="14%"> TAX </td> <td width="12%"> 1972 </td> <td width="12%"> 350 </td> <td width="15%"> 175 </td> <td width="11%"> 4 </td> <td width="36%"> m/t </td></tr></tbody></table>
http://www.chevy-camaro.com/chevy-camaro-chevy-engine-suffix-codes.asp?group=12

click on the link and Go about half way down the page

took me about 20 seconds to find it

 

its a 1970 or 72 350 from a c-10 pickup

 

Titus beat me to it by a second

 

alright thanks guys!!! was just investigating and i guess the 3rd letter is an I

thanks for the help!!!

 

And again, the casting number just gives you a general idea of what it is, they used the same casting number on chev 350 blocks for years.

 

casting number is 3970010 i saw that this number was super common.

 

So, it's a 4-bolt main block...

 

Not sure , gotta drop the oil pan to find out, right ? which ill prob do the next couple days when I put this cal custom finned pan on,

 

It my experience that when I see a T as the first letter of the engine code part of the assembly code that its from a truck...in 1968 the first letter for trucks is Y...I dont know when it switched to a T for truck possibly early 70s..