'71 Boss 302

[fajr22]

This has been my point about the car, I think you will find it is probably the very car this gentleman drove...  Therefore as he said it was built long before the last 70 B2 was.. I am not knocking the car in any way, it has uncomparable history of what might have been. Though with the vin and paperwork discrepancy, this car may be trump in pursuit of the last B2 mustang, But may not be high Trump.. I have submitted paperwork to M-A-W and am currently working on the Last Jersey "Built"car and I believe Mike Sudek is doing the same for Dearborn.... I will Post the findings

FRED ASHMORE

[Wiking John]

I have a suspicion that this car may have been built long before the date stated on the door Patent Tag. 

Any datecodes on fenders, doors or the hood?

You might find a datecode wraped around some of the wiring under the dash.

John

[fajr22]

Was at the book store today while my daughter was swimming and came across this article, The article was about searching the salvage yards for muscle car  jewels.....and you will never guess what they found.....a 1971, Mustang H code four speed.. The car had ram air and they broke the vin down..they also went over the car with a comb determining what was original and what was not...  Talk about coincidense,,,,,, could this be another overlooked one off car??? 

FRED ASHMORE

[1F02G100053]

I will definitely look for that article.  That doesn't surprise me too much because my car was "off the radar" almost completely, so I wondered if that statistic included mine.  I think my car may not be included in any of the 1971 statistics, or perhaps that "1805/1806" Boss 351 production number discrepancy.

After all, how many 1971 Boss 302's are listed in the production guide?  I think the preface says there are 6 VIN's reserved, and none ever built.  Guess we will be seeing a revision.

Thanks for the "heads-up" on the article.
-Andy

[fajr22]

FRED ASHMORE,<<<<------------------Ignorant Jerk is good for something!!! LOL

[FordPromoBOSS302]

I have a suspicion that this car may have been built long before the date stated on the door Patent Tag. 

Any datecodes on fenders, doors or the hood?

You might find a datecode wraped around some of the wiring under the dash.

John

pretty much all the sheet metal will have date codes along with most other things that bolt on

[1F02G100053]

For those following the subject of my 1971 Boss 302 "G" code car, I thought I should post the rear axle and I.D. tag photo and data in this thread, since we got caught up in things over in the "Last Boss 302 Built" thread.



Hawkrod posted the following info concerning the I.D. tag, which is obviously crucial info to support the fact that the car was a "regular production 1971 Boss 302", and probably the last Boss 302 Built in Dearborn (August 3, 1970 build), if there were no other 1971 B2's built: Partial quote, as it relates to above only:

snip

Okay, that is the correct rear and now we have proof that your car would have been the last Boss built unless there are other 71's. The date code on your tag shows that it was from a very early 71 off of the regular production line AFTER 70 production ceased. The tag is dated after the end of the 1970 production cycle and line change. This means the car was built either very late in July (4th week) or more likely in the begining of August 1970. Hawkrod

It was also pointed out by Hawkrod, that according to the Ford documentation this rearend was only used on G, R, C and J code cars and nothing else.  That would be consistent with the car's documentation as a "G" code build.

Fred Ashmore has pointed out an inconsistency when comparing the tag info stated in the Marti Book on the subject.  However (and I hope I have this right) neither source shows this I.D. tag as correct for an "H" code car, as this car was later VIN'd in Los Angeles.  Feel free to correct me guys, if any of what I said is screwed up.

There's much additional info posted on the other thread concerning decoding the I.D. tag.  Just follow Hawkrod's quote back to that thread.  Thanks to everybody who pitched in to provide info about the I.D.  -Andy

[1F02G100053]

Donald Farr and the folks at Mustang Monthly have posted the 71 Boss 302 "Lost Boss" prototype story on the Mustang Monthly website.  The photos are much larger and sharper than they appeared in the magazine.

Also, they uploaded a photo of the Ford Communications Memo concerning de-bossing the car:
http://www.mustangmonthly.com/featuredvehicles/mump_0802_1971_mustang_boss/photo_04.html
Their website prevents importing the image directly, so you will need to click on the above link to see it, or go directly to the online story. 
Many thanks again, to Donald Farr, Jim Smart and Mustang Monthly!!  -Andy

[Hawkrod]

The moving exposure engine shot shows your mystical air cleaner. It is a 351 Cleveland/429CJ (not SCJ) style and has a 429 snorkel (not to hard to find) that I mentioned before. I am actually quite pleased with myself as it was purely a guess on my part but it appears as if I was spot on! You can buy one of those repop 351 ram air units and put a 429 snorkel on it (I probably have a couple) and you will have pretty much what you need. If you do this you will not need the thermal vacuum switch that the 351 cars had. In fact, that may actually have been what Ford did. The Boss 302 ram air may have been the same as the 351 but with no switch in the base. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=130139640465 . Now that I look, I think it is more like the 429CJ unit: http://429mustangcougarinfo.50megs.com/information_2.htm . The difference between a Boss 302 and a 429 may have only been the rubber seal. Another thought came to me in the night, It can't be a 429 base because those were cut for Rochester carbs not Ford/Holley. maybe the Boss was a 351 style lower tin with the 429 seal ring welded on as that would definitely be a very specific application part and nothing like anything else but still easy to fake. Hawkrod

[FordPromoBOSS302]

Donald Farr and the folks at Mustang Monthly have posted the 71 Boss 302 "Lost Boss" prototype story on the Mustang Monthly website.  The photos are much larger and sharper than they appeared in the magazine.

Also, they uploaded a photo of the Ford Communications Memo concerning de-bossing the car:
http://www.mustangmonthly.com/featuredvehicles/mump_0802_1971_mustang_boss/photo_04.html
Their website prevents importing the image directly, so you will need to click on the above link to see it, or go directly to the online story. 
Many thanks again, to Donald Farr, Jim Smart and Mustang Monthly!!  -Andy

Andy,  SUPER COOL!  I really think you need to put in a boss 302 engine and restore the car to as left the factory!

Just think the original Boss 302 engine is probably still somewhere in southern california...

[1F02G100053]

The moving exposure engine shot shows your mystical air cleaner. It is a 351 Cleveland/429CJ (not SCJ) style and has a 429 snorkel (not to hard to find) that I mentioned before. I am actually quite pleased with myself as it was purely a guess on my part but it appears as if I was spot on! You can buy one of those repop 351 ram air units and put a 429 snorkel on it (I probably have a couple) and you will have pretty much what you need. If you do this you will not need the thermal vacuum switch that the 351 cars had. In fact, that may actually have been what Ford did. The Boss 302 ram air may have been the same as the 351 but with no switch in the base. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=130139640465 . Now that I look, I think it is more like the 429CJ unit: http://429mustangcougarinfo.50megs.com/information_2.htm . The difference between a Boss 302 and a 429 may have only been the rubber seal. Another thought came to me in the night, It can't be a 429 base because those were cut for Rochester carbs not Ford/Holley. maybe the Boss was a 351 style lower tin with the 429 seal ring welded on as that would definitely be a very specific application part and nothing like anything else but still easy to fake. Hawkrod

Hawkrod- Thanks for the detailed air cleaner info.  Couple of questions.  If the Boss 302 used a Ford/Holley carb, wouldn't the Boss 351 base be cut for the Autolite 4300D (isn't that a Rochester?)  I'm not very familar with the Boss 302 stuff yet, as most of my limited experience has been with the Boss 351.  AND since Ford took the darned Boss 302 motor out.....

To make matters more complicated, since Ford was planning both a Ram-Air and a Non R.A. version of the 71 Boss 302, I'm guessing mine was originally built with the NASA hood (it still has those springs), then had it removed for the L.V. Car show display and Ad-Photos.  None of the photos show the car with a NASA hood (if that's truly my car, which I think it is.)  When the car was "debossed", it seems doubtful they would have taken off the NASA hood, but then later painted the "Boss Blackout style" on the plain hood.  It was probably done as part of the Boss 302 package they wanted to display.  Just guessing though.  Thanks for the help.
-Andy

P.S. to FordPromo- it's probably been blown up, and recycled into little ash tray souveniers sold at Knott's Berry Farm about 30 years ago! 
Or, I'm picturing the last scene in Planet of the Apes, only instead of the Statue of Liberty, there's this old cylinder block sticking up out of the sand, and you can vaguely make out the "100053" on it.  Chartleton Heston says, "that's impossible!  Dammitt!! Ford never built a 71 Boss 302!!!"

[FordPromoBOSS302]

The moving exposure engine shot shows your mystical air cleaner. It is a 351 Cleveland/429CJ (not SCJ) style and has a 429 snorkel (not to hard to find) that I mentioned before. I am actually quite pleased with myself as it was purely a guess on my part but it appears as if I was spot on! You can buy one of those repop 351 ram air units and put a 429 snorkel on it (I probably have a couple) and you will have pretty much what you need. If you do this you will not need the thermal vacuum switch that the 351 cars had. In fact, that may actually have been what Ford did. The Boss 302 ram air may have been the same as the 351 but with no switch in the base. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=130139640465 . Now that I look, I think it is more like the 429CJ unit: http://429mustangcougarinfo.50megs.com/information_2.htm . The difference between a Boss 302 and a 429 may have only been the rubber seal. Another thought came to me in the night, It can't be a 429 base because those were cut for Rochester carbs not Ford/Holley. maybe the Boss was a 351 style lower tin with the 429 seal ring welded on as that would definitely be a very specific application part and nothing like anything else but still easy to fake. Hawkrod

Hawkrod- Thanks for the detailed air cleaner info.  Couple of questions.  If the Boss 302 used a Ford/Holley carb, wouldn't the Boss 351 base be cut for the Autolite 4300D (isn't that a Rochester?)  I'm not very familar with the Boss 302 stuff yet, as most of my limited experience has been with the Boss 351.  AND since Ford took the darned Boss 302 motor out.....

To make matters more complicated, since Ford was planning both a Ram-Air and a Non R.A. version of the 71 Boss 302, I'm guessing mine was originally built with the NASA hood (it still has those springs), then had it removed for the L.V. Car show display and Ad-Photos.  None of the photos show the car with a NASA hood (if that's truly my car, which I think it is.)  When the car was "debossed", it seems doubtful they would have taken off the NASA hood, but then later painted the "Boss Blackout style" on the plain hood.  It was probably done as part of the Boss 302 package they wanted to display.  Just guessing though.  Thanks for the help.
-Andy

P.S. to FordPromo- it's probably been blown up, and recycled into little ash tray souveniers sold at Knott's Berry Farm about 30 years ago! 
Or, I'm picturing the last scene in Planet of the Apes, only instead of the Statue of Liberty, there's this old cylinder block sticking up out of the sand, and you can vaguely make out the "100053" on it.  Chartleton Heston says, "that's impossible!  Dammitt!! Ford never built a 71 Boss 302!!!"

to add a little bit. My guess is in pic when first built it would have had a Holley as autolite carbs would not have had a smog pump. Same with 429cj to scj. no pump on a 429cj because a quadrajunk carb but the 429SCJ had smog because of the Holley Carb.

[Hawkrod]

Yes, a 71 Boss 302 carb is a Holley, there are plenty of them out there so that bit is easy to ID. The 71 SCJ air cleaner should be danged close but the Boss 351 has the offset that all Clevelad units did. I am really starting to confuse myself on this danged thing! LOL Hawkrod

BTW, the Rochester Quadrajet and an Autolite 4300D are two totally different carbs

[1F02G100053]

Here is a picture of the Toploader I.D. tag on the 71 B2.  Any ideas as to what the numbers under the "RUG AV1" mean, or translate into??  Is it a date, or just a serial #. Thanks! -Andy

[Hawkrod]

RUG AV1 is the trans ID code. That translates to a 71 Mustang/Cougar Boss 302, 351 4V, Boss 351 wide ratio trans (2.78 first gear). The number low it is the serial number of the trans itself and has nothing to do with the car or anything else and is just the order it was assembled it at the drivetrain plant. Hawkrod