1967 Ford Mustang-Straight 6 Engine Questions-Please help!
 

Hello all, I have a few questions regarding the straight 6 engine for my 67 mustang coupe. I was originally planning on hopping up my suspension and going with a 302 engine. I have decided though to devote most of my money towards the beautification of the interior and exterior, rather than focusing on speed off the line. Some questions though are as follows. Any and all help is greatly appreciated, and most welcome.

1) Can anyone recommend a site that has rebuilt straight 6 cylinder engines?
2) Are there any websites that specialize in chrome, fancy, performance parts for the straight 6 engine?
3) How difficult is it to change out the manual trans I have now for an automatic, keeping the same straight 6 engine?
4) My mustang did not come with air conditioning, how hard would it be to install this? Any site suggestions?
5) How do I tell what size straight 6 engine I have?

I am new to this, so please do not mistake my lack of knowledge for ignorance... Thank you again very much!

1) Can anyone recommend a site that has rebuilt straight 6 cylinder engines? No, not enough people want their 6 cylinder engines to begin with. Google could be your friend here. You may want to try a local machine shop to rebuild it for less.

2) Are there any websites that specialize in chrome, fancy, performance parts for the straight 6 engine? Clifford Performance currently makes intakes and headers for the 170ci and 200ci. I know they also makes camshafts, but I'm not sure for the Ford engines.

3) How difficult is it to change out the manual trans I have now for an automatic, keeping the same straight 6 engine? Not difficult at all. It is basically the same as swapping with a V8- the bellhousings should match fine.

4) My mustang did not come with air conditioning, how hard would it be to install this? Any site suggestions? Check out Vintage Air. They may have something, and it would be easier than piecing an original 'add-on' system.

5) How do I tell what size straight 6 engine I have? Casting numbers. There should be a casting number on the block and on the cylinder head. IE block C5DE-H = 1965 200ci (4 bolt bellhousing), head C5DE-B = 1965 200ci (4 bolt bellhousing) Ford 6 Cyl. Casting Numbers

Since you have a Mustang, I will safely assume you are referring to the 3rd generation 6 cyl. engines (144ci, 170ci, 200ci, 250ci).