We have a 1966 Chevy C10 we plan on restoring and would like to find out what size the engine is. The current engine is not the original one and is actually from a '75 Nova. All I can remember about the original engine is that is was a straight 6. I have the original engine number. Can I tell by that?

My dad bought the truck brand new in 1966 so I have a ton of history with the little truck.

Di

Engine's for that years were 230 cubic inch , for 6, 283-327 V-8 cubic inch or if gmc a V-6 215

Are you looking to find a '66 block to install?
IMO it's probably not worth it, unless you are doing a concours perfect resto, which would be a bit unusual for a pick up.

The Nova engine will be visually identical to the original (if it's a six cyl.), but probably is a bit larger, at 250 cid. Also, the Nova engine has hardened valve seats for using unleaded gas; something the original engine probably did not have.

I think the 292 ( 6 cylinder ) was also available in 1966 . You can tell it from the 230 by the motor mount locations. The 230 mounts were straight across from each other where the 292 mounts were offset from each other . Hope this helps ?:smile:

Good point. I had forgotten about the 292.