I have a 77 D100 that I know the engine has been changed in. Is there a code on the engine for the year and displacement? On the left side just below the head is stamped 10310701 but that don't sound like anything :help:
This assuming you have a smallblock. The casting numbers are on the right (passenger) side of the engine block right below the head....the casting number may actually end with the engine size (ie. 4006830-360)
Folks I know I must be making this harder than it should be, but I've spent the last 30 yrs. working on Chevs so be easy with me. On the l.frt (drivers side) on a pad just below the head is stamped 10310701, on r.side is cast 10*10*77,on pad just above pan rail is stamped 8G176579,this is all I can find.HELP
On the right side of the block it should show the date it was made, it will be right blow where the head meets the block, towards the rear, sort of over top of the oil filter. There is also a little clock-looking thing that shows what shift it was made on, although I'm not exactly sure how you are supposed to read it.
On the left side it will have the engine size stamped in as the last 3 digits of the casting number, behind and a little above the starter. You should be able to look in between the inner fender and the frame and see it. It may have one more number after the engine size.
Thanks again Nate,never thought about looking on puter. From there listing they use the same springs on the 79 D200 360 ext.cab. Guess who has a slightly used low milage one sitting in the field? This may become a winter project.