Pretty much as Tom said. I presume that it is not a numbers matching engine since you are inquiring. What, if any, motor is in it now? You can start with checking those engine numbers, both the stamped ones and the casting ones. This is a common subject and there are a couple of other clues: Look behind the fenders where the exterior engine identification emblems are. What holes are there? Have some been filled in so that new emblems could be placed? Obviously 396's didn't come out until early spring, but your June production would allow for that. Assuming that the trans is automatic, is it a PG or TH400. It is my experience that by late in the production cycle most 396's had the TH400.
Hi Mike and Tom, thanks for that. It has a 12 bolt with 4 trailing arms and fender badges are original so looks like an original 396. Now has a 454 with "built" TH350, not my choice, bought it like this, would have preferred a TH400, it does the job though. Needs a little work now but worth it! Thanks again, Dave
Dave, if you think it's original, it will have the partial VIN number stamped on the pad on the motor block (passenger side, front). Unless, of course, the heads have been decked by a machine shop with no regard to the ID's located there!
Thanks Guys, yes, it's a 454 so no match. A real shame. The car has been in the UK since 1968 so the original motor could have gone a long time ago. Apart from the engine and box everything else is original so still nice! Cheers, Dave.