Hey guys, I'm new here and am going to look at a 67 coupe tomorrow. They say that it has a 302 in it, but I'm trying to find out if its a 302 and not a 289 for sure. I know its not easy to tell unless you know what to look for. I know they didn't put the 302 in until a little ways into 68, but they didn't say it was the original engine either. I've also heard that if its a 5 bolt bell housing that its not a 302, only the 6 bolt is a 302, but I'm not sure I'd be able to tell by myself. Another one I've heard is in regards to the dipstick placement, but Idk about that one. This is the only engine picture they have posted. I'll definitely check the casting number and if its 67 or earlier, I'll know its a 289, but if its 68 or newer, it could be either.
It's a dealership and I'd like to go in there with some ammo if at all possible, otherwise I'd just ask them straight up. Thanks guys!
Count the bolts holding the bell housing to the block ,if it has 5 it is an early 289 .If the heads are correct for the block ,take a valve cover off ,in between the valves it will say 289 or 302 . Check the numbers above the starter ,if they start off with C7 -C6 or C5 it is a 289 .A 289 was available for a short time in 68 and then it was changed for the 302 so a C8 could be 289 or 302 .
Interesting story, My dad and I bought a '68 mustang for me to drive as a first car back in '85. It was an early '68 car. It had a 302 stamped block, but was a 289 car. (289 crank and heads) So... good luck. haha