The 6 in 13637 tells us it was a V8. A six cylinder would have a 5 in that position=13537.
If you get the numbers from the block pad behind the alternator we can tell you what engine you have now and if it was original to the car.
Numbers on the left will tell us where, and when the engine was built and give us the engine prefix which tells us which engine you have.
Numbers on the right are known as the CON VIN or partial VIN. The first 1 in this string tells us it's a Chevrolet. Numbers that follow match the last numbers of the VIN on the dash.
Dutch, I know this is not the original engine. It is a Blueprint engine. Previous owner tells me it is a 383 Stroker. I have a sheet in the documentation PO provided that shows it Dyno'ed at 431hp.
I didn't get a chance to get the VIN number as a previous poster suggested. I had an appointment with a front end shop and they aligned the front end today. They said the alignment was not that far out, but the left front tire only had 13lbs of air in it... The front end seemed to be sagging on the drivers side, but airing the tire up and adjusting the toe in straightening the steering wheel made a world of difference in the way the car sits and drives. I'm a very happy Chevelle owner
Thanks for your help on deciphering the numbers on the body tag.
You guys on this forum are an amazing group. I've been reading posts and can't believe the wealth of info on this site.
Sure appreciate all the effort from you and others.