See the link I posted above (post number 11). Read it all and make sure you hit the "next" button at the bottom of each page. Devon
I got it this time :TU: It's definitely a Pontiac. The casting numbers are on the back of the block on the right side just ahead of the bellhousing. Casting date should be down by the distributor base. Cylinder head numbers are just above the two center exhaust ports. Many, but not all of these engines had the cubic inch designation cast onto the side of the block. Look around the motor mount area. If this is one of them it would clearly have a '350', '400', or '455' on it. The casting numbers are about 1" high. What is the engine in? In the mid-late 70's GM was putting whatever they happened to have on hand into the full size cars. I've seen a Chevy in an Olds, a Pontiac in a Buick, etc. It's altogether possible that it be an original engine for the car.
They have told me went i bought the car that it was a 455 came out an old this is the car that the engine is in 68 Buick skylark
Even though it's a Pontiac, it could very well have come out of an Olds. The code for the engine is on the front of the block on the right side just below the cylinder head. VIN should be below that next to the timing cover, sorta behind the lower radiator hose.
Quite the contrary. If it came out of a mid-late 70's full size GM car it could very well have been the original engine regardless of what make the car was. Read my previous post.
Most definately a Pontiac. Follow the previous posts for identification of engine size and horsepower.:TU:
I was going off of the 400-455 that he was talking about. You might find a smaller displacement pontiac motor in another brand, but more than likely it would be an Olds or chebbie motor in there, 305, 350, 403.
I agree with that. After re-reading the thread I see that we are simply misunderstanding each others posts. ou: :grin:
Just to reinforce what the other guys have said, that engine is definitely a Pontiac. The sky blue color indicates it's a 70s vintage--looks to be original factory engine paint. Depending on which heads are on it (a quick way to know is to look at the center two exhaust ports on either side, and they will have raised casting numbers about 1" tall, one on each port). Then you can look up head casting number references to see which year they are. I would be willing to bet that whatever year and displacement heads you have, that's what the whole engine is as well. As was previously mentioned, when the engine is removed (it's hard to see when installed, with grease and dirt covering it) you will be able to see the displacement size cast into the block wall in the area of the freeze plugs on either side. As far as compression, if it's a '70 model year, it'll have 8.8:1 compression for a 350 or 400 2-bbl, 10:1 for a 400 and 455. The GTO engine from that year is a little higher. If it's a '71-'72 it'll have about 8.5:1 compression on all engine sizes. From '73 on, the compression dropped steadily to a ridiculously low 7.5:1 (yikes!!) in like 1977 or so. Hope this helps!
