TNOKE

Can someone tell me about this engine code (6764478)?
Also, what should the oil pressure be at normal running (warm) engine idle?
And what should it be at cold start?
Thanks,

svnt442

Where are you getting that number?

TNOKE

from the oil tube, where you put the oil in the engine

svnt442

Look on the shelf next to it for some raised numbers that are cast into the block.

MDchanic

The number you want is here:



- Eric

svnt442

That will tell him what year the engine is, the sequence number of the car and what plant the car was assembled at, but not what the engine is.

MDchanic

But the basic "What is it?" question can be answered by visual inspection:
If it's a small block, it will have a roughly 12" wide intake manifold, if it's a big block, it will be about 14". Any of us would be able to tell from a photo.

Pre-'68 cars have the ID number on the front of the passenger side head, post-'68 on the driver's side pad in the picture, so if he's got the pad, and the number on it confirms it's a '76, it's either a 260 or a 350 if a small block, or a 455 if a big block.

If it's a different year, then other displacements come into question, but confirming it's the original engine by looking at the engine number will provide a great deal of information.

The other important piece of identifying information is the number or letter on the heads, best seen at the front of the driver's side head.
If original, J will be a 455, 8 will be a 350, and 2A or 10 will be a 260.

- Eric

svnt442

Yes that is all true, but the casting number of the block will also, quickly, identify what the engine is without all of that. The heads may or may not tell what year it is as the car is 35 years old and who knows what has or hasn't been changed on it. Even if it's the original block the heads could have been swapped out for better ones than the 8's that would have come on it.

All good information Eric.

MDchanic

Agree with all, but they may tell what sort of performance or tuning specifications to expect from the engine (ie: original block with #5 heads), which is the important thing, in my opinion .

Of course, I usually collect far more information than I need about a car, then do nothing with it...

- Eric

442much

That is the engine number. The 6 means 1976 and the rest is the number given to the engine.