c-1 block numbers

[Greg Pic 39571]

need help with the following numbers heads 3703523, date k64,block 3703524 date B138,pad reads 0037254T55G. On the block no place for draft tube and no place for oil filter. The bore for the cylinder are .374

[William C.]

Re: c-1 block numbers

1955 (only) block I'd look at the block date again, unless it is a service block. Heads are also 1955, correct for 4-bbl Corvette or pass car. 1955 oil filters (if installed) were external to the engine.

[Tyler T.]

Re: c-1 block numbers

55 Chevy pass car 3 speed manual. I think the block date code is B135 rather than B138. Its an early 265 ci. All corvette motors are F55F, whuch were cast in SAGANAW and machined/assembled in Flint. Yours is a Towanda machined/assembled.

Tyler

[Mike M.]

Re: c-1 block numbers

isn't it interesting that the 55 cast in tonowanda sbcs used the single digit numeric for the year in the casting date. i've seen this on several occassions. mike

[Greg Pic 39571]

Re: c-1 block numbers

thanks guys, the date code on the block using a magnifying glass is B138

[Joseph T.]

Re: Tonawanda

Mike..I thought all Tonawanda castings used two digits for the year code. Blocks, heads etc..

Joe

[John H.]

Re: c-1 block numbers

Greg -

That block was only used for one year (1955), and the pad stamp format you noted wasn't used after 1956.

[Mike M.]

Re: Tonawanda

apparantly some 55 265's got out of new york state with a single digit cast date year. got one or two of them in the barn.they're pass car blocks. mike

[Tyler T.]

Re: Tonawanda

I have a motor in my 55 that is a Tonawanda machined/assembled and saganaw casting ie D185 date(Its a T55F block not original to the car, anyone have a April or earlier 55 block?). It appears saganaw cast blocks that were machined/assembled in both Flint and Tonawanda with the Flint ones going to the Corvette plant.

Tyler

[Tyler T.]

Re: c-1 block numbers

I think what happened was the blocks were cast at Saganaw and shipped to Tonawanda for assembly/machining because the Towawanda foundry could not furnish enough to meet demand. Threw me on my motor too because it had a T55F on the pad I assumed it was a Tonawanda casting and the single digit were the Tonawanda blocks. Lost a bet on that one after doing the research.

Tyl;er