ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1969 Boss => Topic started by: bgp429 on July 03, 2016, 05:24:21 PM

Title: Boss 429 coil marking
Post by: bgp429 on July 03, 2016, 05:24:21 PM
Almost every Boss 429 has the number 10 on the coil bottom. Anyone know what it means?
Title: Re: Boss 429 coil marking
Post by: J_Speegle on July 05, 2016, 05:41:30 PM
Have not found anyone that could explain the purpose of that marking.

Were they all mark with the same number originally??   Don't know but would guess (looking at other marks and patterns) that these have simply been copied and repeated over and over


This might be the origin of the mark - 69 Boss 429 engine installation picture

(http://www.concoursmustang.com/forum/gallery/5/6-050716164054-5978196.jpeg)

(http://www.concoursmustang.com/forum/gallery/5/6-050716164055-59791575.jpeg)
Title: Re: Boss 429 coil marking
Post by: specialed on July 05, 2016, 07:58:23 PM
timing  10 tdc  ? the timing decal wasn't on the engine like most as it was on the snorkel & that was installed at kk,  just guessing
Title: Re: Boss 429 coil marking
Post by: bgp429 on July 05, 2016, 09:51:43 PM
timing  10 tdc  ? the timing decal wasn't on the engine like most as it was on the snorkel & that was installed at kk,  just guessing


That's certainly a good guess. Timing on a 69 is 10, not sure if 70 is the same. Don't think I ever saw any other number.