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what do you think M code means?

1.1K views 8 replies 4 participants last post by  Qcodemachman  
#1 ·
i know not to many of you are in love with the 71-73 mustangs, but this is becoming a common thing now, i have been offered 3 cars M code from diffrent sellers and there is even one on ebay right know from a guy who id think knew mustangs, all of them telling me they have the M code Cobra jets, in 1970 and 1971 there where M code 351 4v engines and q code 351 cobrajet cars ran from 1971 to 1973 and in 1971 these where rare beasts 32 hard tops, 108 fastbacks and 5 convertables, so when i get a email that says i have 1971 351 cobrajet, then i drive 400 miles and its a M code i get a little disappointed! any way just leting anyone who dosent know know!
 
#6 ·
art you are correct the m code in 1971 was a standard 351 4 v and the q code was cobra jet the r code was boss in 71 and h.o in 72 , there was no difrence if the m code had ram air or not, the m code had closed chamber high copresson heads and the q code had low compression open chamber 4v heads. :wall:
and yes i did ask for the vin but he was AFRAID to give it out over the phone.
 
#7 ·
just fyi MARTIES by the numbers page 104
1971 q code fastbacks
42 4 speed
66 c-6 auto
sorry 390 my by the numbers book is copyright 2003 third edition first printing, naybe you have a diffrent one?