It's a 361. It's a coffee table base.Looks like a complete rebuild is in order.
Sometimes it's nice not seeing the same typical engines in cars,like got a hot rod,lets just put a small block Chevy in it! I'm all for having something a little unique and out of the ordinary.
SBC's are about as exciting as watching grass grow. The only thing that the magazines haven't shown is how build one under water. I had a 361 and the 383 does look identical though. Speaking of different engines, I think the poly 318 is a cool and different engine. Very reliable as well...
My 70 Custom Suburban's 318 just turned 100k miles (I just got the wagon in October and I only got to drive it 100 miles before it went into winter storage) and I hope it is as reliable as the one that my Dad bought new in 1970 and passed on to a new owner in 1987 with 180k miles.
I had a 361, and the 383 does look identical though..
A 361 is identical in every way to a 383-2 bbl, other than the pistons. I've been 13.95 @ 102 mph in the quarter with my 3.23-geared 361-powered '66 Coronet, with a Direct Connection purple-shaft cam, stock '68 383 cast intake with Carter AFB carb.