Small Block engine # Is it a 283, 327 ??

[George C.]

Is this number on block in front of pass head a good number ? Is it a Corvette Block ? 0121186F56F Thanks for your help.>George

[William C.]

Re: Small Block engine # Is it a 283, 327 ??

What is the casting number on the behhlousing flange at the rear of the engine? (drivers side)

[George C.]

Re: Small Block engine # Is it a 283, 327 ??

Bill, A friend just gave me these numbers. He's going tomorrow to look the car over. I'll try and get the casting # from him. I was looking at the codes in the NCRS spec guide and I can't find anything. Thanks for fast reply.>George

[George C.]

Re: Small Block engine # Is it a 283, 327 ??

Just talked to him again. He's going to try and go later this afternoon.>George

[Fenwick B.]

Re: Small Block engine # Is it a 283, 327 ??

According to the "1953-1967 Corvette Buyer's Guide", all of the 1956 Motors were 265's. The engine numbers ended in FK, GV,FG,GR AND GU. The G* blocks were 3 speeds, and the F* were Powerglides. The block that you have is probably a passenger car block.

[Jimmy J.]

This web site might be helpful

http://www.nastyz28.com/sbchevy/sblock.html#casting

[George C.]

Re: Small Block engine # Is it a 283, 327 ??

Hi Fenwick, Thanks for your input. Still waiting to hear from my friend on casting number.>George

[Robert Willis]

Re: Small Block engine # Is it a 283, 327 ??

1956 Chevrolet 265 cu. in. 2 barrel passenger car engine, Flint Engine.

[George C.]

Re: Small Block engine # Is it a 283, 327 ??

Robert, Thanks you !. Will post the casting number when I get it.>George

[Joe L.]

Re: Small Block engine # Is it a 283, 327 ??

Robert-----

The "F" suffix code was also used for some 1957 283 cid engines in passenger cars and light trucks, too. The thing I don't understand is why there appears to be a VIN derivative on the pad. I didn't think that any Chevrolet cars had the VIN derivative stamping as early as 1957.

[Joe L.]

Re: Small Block engine # Is it a 283, 327 ??

George-----

Very likely it will be "3720991" if it's a 1956 265 and "3731548" if it's a 1957 283.

[Jack H.]

Don't think it's a VIN derivative, Joe...

From the '56-57 JG:

"1956 engines were serial numbered in sequence starting with 0001001...."

[Robert Willis]

Re: Small Block engine # Is it a 283, 327 ??

1955 "F" 265 cu in , 2 barrel, pg trans. block casting "524"

1956 "F" 265 cu in , 2 barrel, pg trans. block casting "991"

1957 "F" 265 cu in , 2 barrel, pg trans. block casting "548"

Pass Car Engines . I was into 55s awhile back.

Bob

[Philip C.]

A little knowledge is a dangerous thing *NM*

[John N.]

Re: Small Block engine # Is it a 283, 327 ??

Early Flint 56 265 for pass car with 2 bbl powerglide. Curious as to cast date.