need help identifying my straight six?

hey guys me and one of my buds are working on his nova wagon and well were hasving some problems first of all we dont know what size it is anybody know how to identify ?....and its not the original engine?........and maybe some one can help when he baught it the guy told him the carb was to big for the setup and he wants to be more gas efficient its got a clifford manifold with a holley two barrel......anything we can replace with?

 

pics would help. chances are if its in a nova wagon is either a 230 or a 250

 

I had a 63 nova wagon with a 194 C.I. six with clifford manifold, small two barrel holley, clifford tube headers, stock ignition. It was a little finicky in the tune up department. when tuned well it ran killer. Let see some pics

 

get the numbers off the side of the block, there should be 3 seperate numbers and then someone can help as they did me. Found out for sure mine is a 230 out of a 67 chevelle on Nov 10 1966

 

I have had luck with calling my local dealer and giving them a casting number off of the block or the head. It has worked with a few ford parts that I traded for and did not know what they were. Good luck!

 

check in a "motors " repair manual. they will list the numbers on the pad that is on the block. that will tell you what cubic inch you have. good luck cadillac dave

 

like Tony said, there are some different numbers. stamped on a pad by the base of the distributor will be one or two sequences of letter and numbers, these will probably identify it most of the way. also near the starter are two cast number sequences, one is 6 or more digits, the other is a letter and 2 to 4 numbers.

find and post them, we'll see what we can find.

I'm not near my books now but there is lots of info on the net.