454 engine id

I am trying to id my 454

block # 861959 GM11 j877

can anyone help?

I think you have the 1st number wrong as being an 8. There is a 361959 block, it is listed as a, 361959.....454.......73-90...2 or 4 bolt
My info came fron here,

http://www.mortec.com/bbc.htm

I have been to that site.
I have measured, cut and checked-the casting # is 861959 p

The block is out of the car-no mistake.

This is a question on the same block from 2005--but I don't see an answer.

79shortbed454
Club Hot Rod Member

Join Date: May 2005
Location: robstown, tx
Hot Rod Year, Make, Engine: 1979, chevrolet, silverado
Posts: 22

454 identification
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ive got a 454 and i am trying to find out evreything i can aboit it. my casting number is 861959 can anyone help. it also has a p next to the numbers. and on the other side it has gm11

I think moon is correct. What looks to be an 8 is really a 3. This was a popular 454block from '73-'85 an your block date is apparently '77.

There are no BBC engine codes beginning with 8 and there are no other _861959 numbers either.

Kitz

yep i do not get in to the number game much .i have had some 361959 blocks .thats what it must be i have one i just built in to a 496

It really has to be a 3 and not an 8, Sometimes the casting #s bleed together. Ive got a set of BBC heads that are questionable as to the last # on one of the 2 heads. but they are identical.

yep the numbers are in the sand core when they cast the block not hard to get a 8 to look like a 3 they are making them things at a fast clip

Thanks to all for the Help!!

I knew this was the place to go to.