Need some ford knowledge!

[1974duster kev]

So the situation is, my buddy has a 72 mustang i believe? We took the stock 302 out, and we built a 351cleveland. My question is will the 351c bolt to the bell housing, do we need a 351c flex plate? also are the motor mounts the same between the two engines. I'm trying to get him a part list before we attempt to stick this thing in and realize things don't fit

Anything else I'm forgetting let me know!

Thanks Kev

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[CNC-Dude]

Yes, the 260, 289,302 351W and 351C all share the same bellhousing bolt pattern and will bolt up. As for the flywheel/flexplate, I think the one for the 302 will bolt on, but is balanced differently than the Cleveland's, and may be even a smaller diameter(starter engagement issues). If nothing else, take the flywheel/flexplate off of the Cleveland and have the 302 matched to it so you can use the 302 flywheel/flexplate. Have a machine shop look at both of them to verify though, Ford did some strange things and some things like this can create some sticky issues, but nothing you cant resolve with a little head scratching.

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There's no such thing as too much cam....only not enough engine!

[1974duster kev]

Ya i read somewhere about the different flex plates the problem is, when my buddy bough tthe 351c it was in pieces so flexplate is knowwhere to be found

Kev

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[slantzilla]

Get the proper flywheel or you'll be sorry. Ford did dumber things with engine balance than Mopar did.

You may need Cleveland motor mounts too. The 351C is kinda based off the 302 block, but not real close.

Also, is it a 2bbl or 4 bbl motor? The heads will be very different between the two, and intakes do not interchange. If he gets an aftermarket intake make sure it matches the heads. 4bbl intakes for 2bbl heads are harder to come by than intakes for the 4bbl heads.

Headers will also be different.

Sounds like a cool project. The later generation Mustangs were neat cars.

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Proud supporter of Mike Jeffrey Racing Engines since 1999.

[1974duster kev]

Ya we had to get the correct intake and headers for it awhile back it's ready to drop in besides the whole motor mount/ flex plate issues.

Kev

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[hantayo13]

kev
I asked Jim from fitts ford service dept and his reply:
Yeah thats an easy swap. The Flywheel for the 351 will work on the C4 trans in the mustang, Motor mounts are the same, You'll need all fron brackets for the Alt, P/S and A/C if it has it. Larger radiator would be a good addition too. I did this swap on a 67 cougar and it was a very nice bolt in. Good luck Jim
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[DusterIdiot]

Most of the 1971-1973 Clydesdale Mustangs got the FMX tranny, which is an ok midrange tranny. The C4 is a bit like our 904, if you build it right it will take the punishment the bigger engines can give...if it's stock it will wither on you.

Yeah Ford did some crappy stuff...I argue it with my inlaws all the time...usually it ends with: At least the 318 crank came neutral balance and not 8 lbs out of whack like the 302...or worse 15 lbs on the 5.0...

-D.Idiot

[Fopar]

The C4 clutches are a lot smaller than the 904 clutches, might be better to use C6 transmission.

Richard

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Part of Tyrde-Browne Racing

[slantzilla]

C-6 would be much better than an FMX. Those things were great until they broke, then they are a nightmare to repair.

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Proud supporter of Mike Jeffrey Racing Engines since 1999.

[Ceej]

The FMX was used behind the Cleveland. It's basically a beefed C4. The C4 can handle quite a bit. If your sticking with the 2bbl you will probably be OK. The 2bbl Clevland heads are very different from the 4bbl Clevland heads. Parts like intakes don't interchange. Be aware of that if your ordering an aftermarket manifold. You can get a 4bbl intake for 2bbl heads. If you order a 4bbl intake for the OEM 4bbl head and you have 2bbl heads, it won't fit.

The Clevland block isn't as strong as the Windsor. Before you get too carried away, know that the Windsor can be modified to use the Clevland heads. It's a coolant flow issue. Should be able to find lots of info on Google.
The Windsor with the clevland heads is almost as good as a Windsor with aftermarket heads. Not quite, but it'll pump it up a few ponies.

The Cleveland block isn't as strong as the Windsor, but it is heavier. Don't get all crazy with RPM. They are pretty famous for twisting oil pump driveshafts off, and bending the dickens out of pushrods. Keep your foot out of it when the engine is cold.

You are talking a Clevland, not a Mod, right? Unless you just like buying gasoline, I'd leave the 302 in there over a mod.

CJ

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Tyrde-Browne Racing

I'm off to find myself. If I should return before I get back, keep me here.

[1974duster kev]

Thanks for the info fellas, heres the lowdown on the engine.

351c bored .030 over 2v heads 9.9:1 compression
stock crank just had it machined
stock rods resized for arp stuff
new stock style pistons
218/222 @.050 could be other way around cant remeber like .510/.518lift
arp head bolts/arp mains
ported runners/ blended bowls/ valve jobs stock size valves
headers
rpm air gap 2v head alum eddy intake
750cfm holly vac secondary

My buddy wanted a 351c for whatever reason so I said okie dokie lets build this thing! I think that sum it up hopefully this makes some decent power it's built to be a daily driver for him or a weekend car. Just gotta drop it in hope all goes well the first ford motor i've ever dove into

Kev

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[hantayo13]

so how it going?????engine done/??? installed????/running?????