The block will have a casting number on the right side (it's hidden behind the starter). Since (I believe) the 289s and 302s use the same basic block, that may not give you a positive answer. There should be a build date stamped onto a machined spot on the block just ahead of the left head which will give you some more info (again not a positive). The 302 heads used to have a cast "302" on the top of the heads. With all the engine rebuilds/swaps it'll be really difficult to tell for sure.

 

Look up under your starter, There will be a date code, You might have to pull to read it. Should be C80E- 6015-A or B for a 302

 

289 blocks will have the numbers C6TE-6015-Z or C8TE-6015-D D being the later block for 67

 

uh huh... well, pull the starter motor to write down the casting numbers you see above it on the block, front drivers side of the block right in front of the cyl head on the little ledge should be a stamped code, pull a valve cover, actually both, and see what kind of stamping numbers are there. you can then use google to get to cross-reference charts..or take good photos and come repost...there may be a small tag on the carb, on the side of the distributor will be some stamping numbers, a stamping number on the intake, and on the back of the block at the edge of the intake manifold, you may see a partial vin number stamped in the ledge...might be yours

 

Do I need to pull the intake manifold off? This is what I'm seeing in the rear...

 

 

I'm still having a hard time finding any numbers. Am I looking for the numbers on a horizontal surface, or rear of the engine on a vertical surface. Here's what I'm seeing at the rear of the engine from the top view:

 

From the bottom up. You have to look on the passenger side, bottom of the car. Look up past the starter and you should see some casting codes.

 

The intake shows C8DE so its a 68 Intake, more then likely. If the block matches I would say 68 302 but have to get the casting codes of the block.

 

Found them!

 

where did you find this??

 

February 25, 1970 351W.

Block

A source database for the mustang hobbyist. Find detail information for your Mustang and Shelby Fan Clutch. FE 352 390 406 410 427 428CJ, Small block 289 302 351, 385 series 429 460 block casting decode

www.mustangtek.com

.

 

So - it' not a 302, it's a 351W?

The "C9" indicate 1969?

Does the "O" in the C9OE mean it's from a 1969 Fairlane or Torino?

 

Yes, C9OE-B is a 351W.

The "O" in C9OE only means that the Intermediate Group (Fairlane/Torino) was responsible for that particular block casting mold... the block would be used across the Ford/Mercury line as needed.

 

It was created for that Fairlane/Torino line but can be used in any Ford Vehicle that had a 351W including the Mustang. Verified since I do see 8 intake bolts on one side, so you have 16 intake bolts vs the 302/289 with 12. That would be a nice surprise for me. More cubes.

Date code is 0B25 - so 1970 February 25th.

 

@Huskinhano you had this in the thread about resistor wires

Huskinhano
Registered
Joined Mar 6, 2001
20,633 Posts
#11 • a moment ago
Looks like a 289 block. Just behind the intake manifold, on the block between the two upper bellhousing bolts is a depression in the block. If it goes between the two bolts, it's a 288. If the driver's side is filled in half way with the depression on the other half, it's a 302 block. Functionality there isn't really anything different between a 289 and 302

 

Very interesting. So - does that mean the engine came in a 1969 model car?

My plan for my Mustang doesn't involve using this engine or the manual 3 speed. Any insight into what the engine/trans combo is worth? Is it considered desirable?

 

Very interesting. So - does that mean the engine came in a 1969 model car?

My plan for my Mustang doesn't involve using this engine or the manual 4 speed. Any insight into what the engine/trans combo is worth? Is it considered desirable?

No, it means that the block was DESIGNED, initially, for the '69 model year. Yours was actually cast in February of 1970. A partial VIN on the top rear of the block will tell you at which assembly plant to potentially narrow it down a bit to what it was originally installed in.

 

a used running, nothing special,289/302 is about 500 bucks 4 speed toploader maybe 700-900

 

@2nd 66 - Sorry, it's a 3 speed manual (I think), not a toploader.

 

Classic, so, you have a 351W, and a toploader ? And you're NOT going to use them ??! The 351W is well though of, and the toploaders are great. What are you thinking of instead ? LSG

 

Sorry, it's a 3 speed manual (I was told). I haven't actually inspected it closely yet either.

I'm planning on doing a Modular Crate engine (Aluminator 52XS) and 6 speed manual.

 

Classic, well, check if it is a 3 or 4 speed, after all even if you were told it was 3, the same guy told you it was a 302, and it is not. I'd skip the mod motor and build a 393 stroker from your 351W. MUCH more cost effective and the power is there at a lower and more street friendly rpm range, and you don't have to butcher the towers to get it in there. But I'd run a Tremec 5spd if it were me. Less hassle than putting 6 in. Of all the 351Ws that are out there, the 69 and 70 are the most sought after. The heads are a little nicer. LSG

 

ta da...you have to clean off that back of the block area on the horizontal pad to see if there is a partial vin. What year car do you have, what engine code letter is in the vin? If you don't want the engine, I will come to take it off your hands! Might as well get rid of old greasy as soon as possible, I'll haul off that old tranny for you to...you don't want some old tranny hanging around the garage do you? Where are you located?

 

Located in Gig Harbor, Washington.

 

Found it. It's a 3 speed toploader from a '67-'68 Mustang with a 289. (Source: Ford Transmissions)

 

Well, it's still a very Plain Jane 351W 2V so there's not exactly a lot of demand. Everybody who's building a 351 Stroker wants the later block that was set up for roller lifters. At one time the '69/'70 351W heads were extremely desirable for use on a 289 or 302 due to larger valves and relatively small combustion chambers but the cheap aluminum heads have killed that mod. If it runs you can ask $500 for it.

 

Ok, I pulled the engine and cleaned off the block to find this partial vin stamp. Any help narrowing down the details of this 351W came out of originally?

 

0- 1970
P- Twin Cities, MN assembly plant
155421 or 155790- sequential serial number of the car it was installed in at the factory.

It looks like Ford was assembling Galaxies and LTDs there at the time so your engine came out of one of those cars.

 

Awesome. Thank you!