Thread: Buying a 67 Mustang & questioning motor

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I am buying a rebuilt 67 fastback with casting code C5AE-A block. it's a 427 but I think from the "A" it's a galaxy motor. Is that a good motor, HP, ???? Help

Originally Posted by 73Strong

I am buying a rebuilt 67 fastback with casting code C5AE-A block. it's a 427 but I think from the "A" it's a galaxy motor. Is that a good motor, HP, ???? Help

More like a 390 engine than a 427 engine. The key to identification will be after your drop the oil pan and see whether or not it is cross bolted or not. I'd be curious as to what the casting numbers off the heads are. That and whether or not the freeze plugs are push in or screw in style.


Bill S.

Originally Posted by mrmustang

More like a 390 engine than a 427 engine. The key to identification will be after your drop the oil pan and see whether or not it is cross bolted or not. I'd be curious as to what the casting numbers off the heads are. That and whether or not the freeze plugs are push in or screw in style.


Bill S.

Not a Ford guy, but can't you see the spot-facing and bolt heads on the outside skirt of the block?

Originally Posted by techinspector1

Not a Ford guy, but can't you see the spot-facing and bolt heads on the outside skirt of the block?

Yup, and I sure do wish I had one of those crossbolted blocks in MY garage to get you a picture of!!!!!!! I've heard that a lot of blocks can be converted to the crossbolts, even found a place selling the main caps to do it.... Just not on my priority list right now, I guess...
But someday...........

The casting on the block is definetly C5AE-A. I though that was for a Galaxy? I don't think the seller is going to let me open his motor up to start looking for head stamps although it would eliminate some questions. Was the Galaxy 427 a good motor? What did it have for HP, torque? I assume that is easily rebuilt if you wanted to upgrade heads, crank, valves etc?

if it is a 427 block, hp wise stock will not matter if you rebuild it and put in upgraded parts. the early ford blocks were all very stout and can take a severe build. but if the guy will not let you properly identify the block, you might want to cut and run. there are still a alot of 429/460 cores available everywhere and parts might be a little easier to come across then the 427 anyway. I would not buy a motor if I did not know what it was!

Thanks Mooeye. That casting number could be for a 390 or 427, If car was straight all this would have been documented or at least aloow buyer to view engine.

Thanks for the help. I think I'll Let this car go. Keep your eyes open for a nice 67 fastback.

Your looking for one with a big block or are you willing to swap out the engine . I'm allways looking and watching the market on these cars some good money to be made . You have to be ready last Sept. this one got offered to me needs work but a S code 4 spd car it was well worth the 4k i gave for it . Would pull low teens easy on ebay as it sits . I found it to be a numbers matching also . Click on pic to enlarge

Here is a link to Vintage Mustang Forum i go too also . Scroll down to cars for sale some projects and some done cars for sale .

http://forums.vintage-mustang.com/fusionbb.php?

Unless the price is really steep, I would thing a 67 fastback in good condition might be worth as much or not more than the motor alone...regardless of size. If the price is right, might be a good idea to get it and replace or rebuild the motor to your desire. Obvioulsy your decision.

I wouldn't mind finding an nice 289 and yanking it as long as the rest of the car was clean. Ebay 67 fastback original w/ 289's going between 22-28K.

What is he best abng for the buck w/ regard to dropping in a new motor? I would like to be around 425-450 without boring or getting a high maintenane motor that can't survive three hour drives in the heat of Florida. Pulled along side a beautiful Camaro SS that was stuck in traffic and had to keep pulling over because engine kept overheating.

Originally Posted by 73Strong

I am buying a rebuilt 67 fastback with casting code C5AE-A block. it's a 427 but I think from the "A" it's a galaxy motor. Is that a good motor, HP, ???? Help

I would just take it out for a test drive. I had a 302 in a 68 mustang that was stock and if had some get up and go! Around seventy the front end would start to lift a little. At a hundred it started to float!. Any mototr that size is going to have pep. If it's recently rebuilt, you probably aren't going to dive in(I would guess), unless it currently doesn't meet your needs. Check it out, drive it, and take some photos for us, those are nice little cars(being a Ford guy I'm biased, but the front end will probably need suspension work if you plan on driving fast, the stock Firebirds and Cameros of that time period had much better front end suspensions and steerability at speed!)

Upgrades with cooling should help your over heats . Alot build the engine and never upgrade cooling so low speeds and idles are terrible .

73 i see alot of clean FB go in the mid to high teens well worth it . Redone with new complete sheet metal also . I'll keep my eye out since thats a past time hobby anyway and I'll pm you if i see something you should look at .

Thanks Bobby. I have a 67 fastback S code owner claimed it was a 67 date coded cobra jet. Obviously not theat motor since it came out in 68. Now owner not sure if its a 390, 427 or something else. That's why he sent me the "C5AE-A" block code. I thought it was from a Galaxy from my resarch. Maybe a 427 but who knows and I can't afford flying around opening motors to really identify them unless car is a steal.