I have a Big Block Chevy Engine with casting numbers 3855961,
I would like to know if this is a 396 or 427 big block chevy?
How can i tell the difference between the two?
http://www.cartitlesforsale.com
2007-09-12 13:49:28 · 12 answers · asked by craftmaker2003 1 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
Daniel G is correct. This is one of the rare instances that GM used the same block casting to build both a 396 and a 427. There were also several 283/327 small block castings which they did the same thing. If the engine is not assembled and you have access to the cylinders a sure way to tell is to measure the bore. 396's were a 4.094" bore 427's were 4.250"
2007-09-13 06:04:20 · answer #1 · answered by Anonymous · 0⤊ 0⤋
That casting # could be for either one of them, in 66 was a 427 made with that casting # and also 65-69 396 carried the same casting #. If you look at the block on the side where the head sits further back there will be some numbers and letters. I would need the 3 letter block code i.e. CDJ or whatever it is.
2007-09-13 03:51:51 · answer #2 · answered by Daniel G 2 · 1⤊ 0⤋
Big Block Chevy Casting Numbers
2016-10-06 07:42:07 · answer #3 · answered by ? 4 · 0⤊ 0⤋
It's a 396 from a 1968-69 light truck.
This might be a 396 "tall block". If so, you may not wish to use it in a car as this is a long stroke motor.
If it's a truck engine it will have the word "truck" cast into the block behind the timing cover.
2007-09-12 14:02:56 · answer #4 · answered by Anonymous · 0⤊ 2⤋
It's a 427 2bolt main engine.
2007-09-12 14:00:35 · answer #5 · answered by Kiffin # 1 6 · 1⤊ 1⤋
427 2 bolt
http://www.mortec.com/bbc.htm
2007-09-12 14:07:34 · answer #6 · answered by Trump 2020 7 · 1⤊ 1⤋
Did you read the fine print at this site? According to their description its a 350 cu.in motor bored .030 which pans out to 355 cubic inches. It has double hump heads which by todays standards aren't even close to the hp. numbers you could get with either of the two new VORTEC small block heads.
2007-09-12 14:10:14 · answer #7 · answered by Country Boy 7 · 0⤊ 3⤋
if Mortec says its a 427, you can bank on it that they are correct.
2007-09-12 18:38:34 · answer #8 · answered by Anonymous · 0⤊ 0⤋
there is a serial number on the block which you can check with chevy Don't trust the seller or the title check the number on the engine.
2007-09-12 13:55:48 · answer #9 · answered by Captain 1 · 1⤊ 1⤋
Of which car do you speak?? take those numbers to a GM Dealer. Would have been alot easier if you would have given Make Model and Year of the car.
2007-09-12 13:56:34 · answer #10 · answered by reddcobalt07 3 · 0⤊ 1⤋