Quick way to tell difference between 302 and 351 cleveland - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Rustyfords · 06-14-2004, 15:40

Does anyone know a quick way to tell the difference between a 302 cleveland and a 351 cleveland. Its out a 72 Fairlane, the Vin code is Q, which from my research shows it should be a 302, bearing in mind our codes here are totally different to any other countrie's codes. A 'C' would be a 351, the rocker covers are orange, the carb is a double barrel single deep throat stromburg, I think its a stromburg, looks like the one on our 302 windsor.
The only number I could find on the block was D2AE-CA, I have tried to check it out in all my V8 books, but they don't really cover a 302C.

brenx · 06-14-2004, 17:36

Pull a plug and put the dipstick in the bore with the piston on TDC. Mark the dipstick.Turn the engine over by hand. If 3 inches? It's 302 if 3.5 inches? It's a 351.

Brenden

SVO Pete · 06-14-2004, 18:07

Quote:

Originally Posted by brenx

Pull a plug and put the dipstick in the bore with the piston on TDC. Mark the dipstick.Turn the engine over by hand. If 3 inches? It's 302 if 3.5 inches? It's a 351.

Brenden

This is a good tip! Never heard it before but so simple.

leonbray · 06-14-2004, 18:45

Dayle - get Stephen to do it - note the "turn the engine over by hand" don't let him use the starter - don't want you to have your good hand screwed up as well

GS-0351girl · 06-14-2004, 21:22

thats called measuring the stroke. hence the names 302 (3in) and 351 (3.5in)

TyreToaster · 06-15-2004, 05:15

Quote:

Originally Posted by GS-0351girl

thats called measuring the stroke. hence the names 302 (3in) and 351 (3.5in)

don�t get confused by the coincidence here for example a 460 has a 3.85 inch stroke and not 4.6 inch, regardless though measuring with a dipstick is a sure way to get it.

The D2AE casting number means it was a block cast in 1972 intended for use in cars, I can explain how these casting numbers work if anyone is interested.

xacoupe · 06-15-2004, 05:22

302 = 302 cubic inches capcity, 351 = 351 cubic inches displacement ..nothing more, nothing less.

Tyre Toaster, post it up. I have it in a book somewhere but I am sure everyone would be interested.

xdclevo · 06-16-2004, 02:39

Quote:

Originally Posted by TyreToaster

don�t get confused by the coincidence here for example a 460 has a 3.85 inch stroke and not 4.6 inch, regardless though measuring with a dipstick is a sure way to get it.

If you have a 4 inch bore (or 4.030) it is a good rule of thumb.
3" stroke = 302
3.5" stroke = 351
3.75 stroke = 378
3.8 stroke = 383
4.0 stroke = 400
Its all good anyway........

TyreToaster · 06-17-2004, 02:30

i dont have a listing as such but i will compile a list and post it soon

Rustyfords · 06-17-2004, 15:47

Thank TyreToaster. And thanks to all for replies. Don't worry Leon, its a given that Stephen would have to do that cranking bit, and I think I will pop a straw in to check for TDC and length, my history of sharp metal objects and piston walls is not good, bit like my history with bent push rods. Had to order new valves as well as push rods for that little story now, dam engine is costing a fortune, told S it would have been cheaper to buy me a rev counter years ago. :D