Wade the M code in 1971 is the 351C 4V motor. The same motor qualification as a Q code in 1973. The higher output 351C choice than the standard 351C 2V.
(07-17-2011, 02:30 AM)Steven Harris Wrote: [ -> ]Wade the M code in 1971 is the 351C 4V motor. The same motor qualification as a Q code in 1973. The higher output 351C choice than the standard 351C 2V.
THanks Steven! Is there a place where these codes are documented so I can know what I am looking at before I buy something? Also what did you think of the car and the price he is asking for it on ebay..
Wade
M code I think the person is talking about the motor . But the M did not come out untill I beleave 75 and that was in a Ford 400 ci that was destrocked to a 351 in a 400 block . Do a little checking I may be wrong . C . L .
The engine code "M" should be in the fifth position of the Vehicle Identification Number (VIN). The information I have shows that there was a "Q" code in 1971, which is a 351-4V Ram Air and the "M" code is a 351-4V. The "Q" code is generally agreed upon to be more desirable, even though the "M" code is a great engine.
The sticker on the drivers door should have more data codes on it, including the transmission. A code "5" would be a Four-speed Manual (2.78:1) and a code "6" would be a Four-speed Manual (2.32:1)
I think the buy it now price of 8K is a little steep for that condition, but its hard to tell unless you see it in person. Good luck with your search!
My 71 Mach1 is an M code car. The engine is a 4v cleveland with 2 bolt mains and closed chamber heads.The rated compression is 10.75.It's a very strong engine.I've had it to 6000 rmp without any problems other than not enough fuel flow (with stock fuel system) at high revs.
(07-17-2011, 11:20 AM)Rare Pony Wrote: [ -> ]The engine code "M" should be in the fifth position of the Vehicle Identification Number (VIN). The information I have shows that there was a "Q" code in 1971, which is a 351-4V Ram Air and the "M" code is a 351-4V. The "Q" code is generally agreed upon to be more desirable, even though the "M" code is a great engine.
The sticker on the drivers door should have more data codes on it, including the transmission. A code "5" would be a Four-speed Manual (2.78:1) and a code "6" would be a Four-speed Manual (2.32:1)
I think the buy it now price of 8K is a little steep for that condition, but its hard to tell unless you see it in person. Good luck with your search!
M code was 70 and 71 351 C 4V hi compression closed chamber heads, 2 bolt mains [ unless it was a 71 Boss ]
Ram air was an option
At the end of 71 the Q code [ 72 motor ] was introduced lower compression but 4 bolt main.
Don