ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1970 Boss => Topic started by: hopey on February 24, 2022, 04:50:32 PM

Title: 1970 BOSS 302 motor mount bolt arrangement
Post by: hopey on February 24, 2022, 04:50:32 PM

Try again. I am checking some details on my mid-Nov 69 Dearborn built BOSS 302, and one question I have is what would be the correct arrangement for the long motor mount insulator bolt.

Specifically was there a running change from the 1969 setup to the later 70 setup as detailed in the Osborn Assembly Manual which is effective 4-3-70? If anyone with first hand knowledge can advise or has details of an unmolested original mid-November Dearborn build, that would be appreciated.

Background: My car appears to have the earlier 1969 type arrangement of a 7/16 hex headed bolt (351989-S), washer (376102-S) and bolt (375918-S). However I have no way to verify if this is original, what I do know is this is how it was configured when I purchased the vehicle in 2009. The motor had been pulled at least once by previous owners according to the documentation.

The Osborn chassis assembly manual assembly drawing is effective 4-3-70 and shows the 3/8 flange headed bolt (56354-S4) with no washer and a flange headed nut (382802-S2).

Below are illustrations from Osborn Chassis Assembly Manual.

Title: Re: 1970 BOSS 302 motor mount bolt arrangement
Post by: J_Speegle on February 24, 2022, 05:48:46 PM

Not an easy place to get a picture of. Hope the following helps both you and other owners of these cars - the reason I'm including examples from other production periods.

0F02G1000xx
(https://www.concoursmustang.com/forum/gallery/17/6-240222163616-170242136.jpeg)


0F02G131xxx
(https://www.concoursmustang.com/forum/gallery/17/6-240222163610-170211745.jpeg)


0F02G142xxx
(https://www.concoursmustang.com/forum/gallery/17/6-240222163612-17022154.jpeg)


0F02G157xxx
(https://www.concoursmustang.com/forum/gallery/17/6-240222163612-17023320.jpeg)


0F02G169xxx
(https://www.concoursmustang.com/forum/gallery/17/6-240222163616-17024269.jpeg)


0F02G199xxx
(https://www.concoursmustang.com/forum/gallery/17/6-240222164721-170261113.jpeg)


0F02G206xxx
(https://www.concoursmustang.com/forum/gallery/17/6-240222164722-17027345.jpeg)
(https://www.concoursmustang.com/forum/gallery/17/6-240222164723-170281997.jpeg)

Hope this helps

Title: Re: 1970 BOSS 302 motor mount bolt arrangement
Post by: hopey on February 24, 2022, 06:15:57 PM

Jeff

Many thanks.

Is it safe to say the first 3 photos 0F02G1000xx, 0F02G131xxx & 0F02G142xxx would all be early 70 production (sept-Dec 69)? They all appear to show flanged headed bolts and nuts, so I think I have got my answer!

Title: Re: 1970 BOSS 302 motor mount bolt arrangement
Post by: J_Speegle on February 24, 2022, 07:08:01 PM

Quote from: hopey on February 24, 2022, 06:15:57 PM

Is it safe to say the first 3 photos 0F02G1000xx, 0F02G131xxx & 0F02G142xxx would all be early 70 production (sept-Dec 69)? .............

0F02G1000xx- Built 8/2/69
0F02G131xxx- Built 11/21/69
0F02G142xxx- Some time in Dec 69