decoding a 283 chevy

I only have 5 numbers on pad on the block,, t107d if I'm reading it right. Can anyone decode this for me? The only thing I figured out is T=Tonawanda, 1=Jan, 07= 7th day ?. Not sure if that is right and I can't figure out what the d stands for. Thanks

 

First letter generally denotes the month A=Jan B=Feb.... so t=??? If it read A107d it would translate to jan 10, 1957,,, the use of d in model year 1958 was for a two barrel 283 powerglide 185 horsepower for cars and trucks.

 

Is t the first letter T for tonawanda Ny?

 

D means 58 thru 64 283 Impala powerglide 2bbl carb
OR
55-56 265 TRUCK 4bbl carb and manual ******

Kinda weird but they reused the letter codes a lot back then

 

No side motor mounts it's a 265, 58 and up blocks were cast for side mounts.

 

I am pretty sure the T is for Tonawanda, and the D would be a 58- 283 or as said possibly a 265 if no side mounts.

 

It does have side mounts and it did have a 2 barrel so it must be a 58 to 64 283. Where are you guys getting the Impala part from? Thanks again.

 

I've used Lutty's Impala Bob's.and a lot of online searches.

 

Should there be more then 5 numbers ?

 

no.

 

Thanks again for the decoding guys.

 

Check the numbers on the back of the block for more info.