does it really exist 351M

66StangGuy · 08-07-2003, 04:59 AM

a friend of mine at work is selling his old t bird. he says it has a 351M and a c6 trans. he says it runs good and the only damage to the car is the front suspention. i think he says it was a 79 or something. is the 351m a good motor. iv never heard of it before. Did this also come with a 9" rear end.

PKRWUD · 08-07-2003, 10:17 AM

They're okay for a truck, but that's about it. It's a 351 Modified, but not in a good way. It's a Cleveland 400 block with a 351W crank in it, which works out to 351ci. There are virtually no aftermarket parts for them, and they never came with a 4bbl. They were pretty much mid 70's smog motors.

Take care,
~Chris

gofastmercury · 08-08-2003, 12:27 AM

Doesn't it have a cleavland crank? I think the mounts are diffent, and it uses a big block trans bolt pattern. Basicly a no good for anything, because theres no parts, hunk of junk!

rwhite65 · 08-08-2003, 01:29 AM

I can not remember exactly what made it a 351m, I think the whole crank thing is right though, it does have a big block bellhousing ....so a 460 will bolt right up to the tranny depending on applitcation
I have a 79 ford 3/4 four wheel drive, decent power, HORRIBLE gas milage.....can u say 460?
The only reason I am going to keep my motor after the swap, is I heard you can use the crank too make a stroker motor....maybe someone in here can help us with that.
Ryan

gofastmercury · 08-08-2003, 08:24 PM

The 400 is the crank to use. It has the same main size. Some macheining has to be done to the nose to make it work. There is aftermarket cranks are readily available and are cheaper than trying to use the factory one.

rbohm · 08-10-2003, 02:44 AM

Quote:

Originally posted by gofastmercury
The 400 is the crank to use. It has the same main size. Some macheining has to be done to the nose to make it work. There is aftermarket cranks are readily available and are cheaper than trying to use the factory one.

to install a 400 crank in a 351M NO machine work needs to be done as they are the same except for the stroke. the blocks use the 429/460 bellhousing, and engine mounts.

08-07-2003, 04:59 AM	#1
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	does it really exist 351M a friend of mine at work is selling his old t bird. he says it has a 351M and a c6 trans. he says it runs good and the only damage to the car is the front suspention. i think he says it was a 79 or something. is the 351m a good motor. iv never heard of it before. Did this also come with a 9" rear end. __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.

08-07-2003, 10:17 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	They're okay for a truck, but that's about it. It's a 351 Modified, but not in a good way. It's a Cleveland 400 block with a 351W crank in it, which works out to 351ci. There are virtually no aftermarket parts for them, and they never came with a 4bbl. They were pretty much mid 70's smog motors. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

08-08-2003, 12:27 AM	#3
gofastmercury Registered Member Join Date: May 2001 Location: calgary alberta canada Posts: 366	Doesn't it have a cleavland crank? I think the mounts are diffent, and it uses a big block trans bolt pattern. Basicly a no good for anything, because theres no parts, hunk of junk! __________________ 93LXcopcarSOLD14.3@96 @ 4500ft 2.02 60ft on street tires. my 67 ranchero NOT A 390 ANY MORE! 460! 3.70's cast manifolds, comp cams 262H, performer, 750DP 100K out of 79 F250 NEW(oct20/02)14.58@95mph 2.3 60 ft corrects to:13.86@100 66 merc comet351w, isky roller 600 lift 268/260@.050, vic jr. 700DP, 5000stall, 4.56's c-4, 3400lbs with driver 12.3@110 @ 4000ft 1.69 60 ft corrects to:11.69@115

08-08-2003, 01:29 AM	#4
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	the 351m I can not remember exactly what made it a 351m, I think the whole crank thing is right though, it does have a big block bellhousing ....so a 460 will bolt right up to the tranny depending on applitcation I have a 79 ford 3/4 four wheel drive, decent power, HORRIBLE gas milage.....can u say 460? The only reason I am going to keep my motor after the swap, is I heard you can use the crank too make a stroker motor....maybe someone in here can help us with that. Ryan __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

08-08-2003, 08:24 PM	#5
gofastmercury Registered Member Join Date: May 2001 Location: calgary alberta canada Posts: 366	The 400 is the crank to use. It has the same main size. Some macheining has to be done to the nose to make it work. There is aftermarket cranks are readily available and are cheaper than trying to use the factory one. __________________ 93LXcopcarSOLD14.3@96 @ 4500ft 2.02 60ft on street tires. my 67 ranchero NOT A 390 ANY MORE! 460! 3.70's cast manifolds, comp cams 262H, performer, 750DP 100K out of 79 F250 NEW(oct20/02)14.58@95mph 2.3 60 ft corrects to:13.86@100 66 merc comet351w, isky roller 600 lift 268/260@.050, vic jr. 700DP, 5000stall, 4.56's c-4, 3400lbs with driver 12.3@110 @ 4000ft 1.69 60 ft corrects to:11.69@115

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