https://www.hagerty.com/media/member-stories/1970-boss-mustang-427-cu-in-secret/
"Submitted for your approval."
Cool article, thanks for posting!
You're welcome. I was astounded that the shock towers would accommodate such an engine. I thought they had to be cut at the factory when a customer ordered the 428. Seemingly not. One size fit all. Also surprising that a G.T. 500 owner gave up this engine to put a K code 289 in his 500. Times were different then.
Quote from: deathsled on October 13, 2022, 09:54:41 AM
You're welcome. I was astounded that the shock towers would accommodate such an engine. I thought they had to be cut at the factory when a customer ordered the 428. Seemingly not. One size fit all. Also surprising that a G.T. 500 owner gave up this engine to put a K code 289 in his 500. Times were different then.
Yes, the FE engine except for the SOHC is a simple drop in. For a long time I thought of putting a 427 in my 1969 BOSS 302.
John
There is still time...John Slack... ;D ( Go with the Stroked Tunnel Port).... ::)
Quote from: deathsled on October 13, 2022, 09:54:41 AM
You're welcome. I was astounded that the shock towers would accommodate such an engine. I thought they had to be cut at the factory when a customer ordered the 428. Seemingly not. One size fit all. Also surprising that a G.T. 500 owner gave up this engine to put a K code 289 in his 500. Times were different then.
You must be thinking of the BOSS 429. They had to have their Shock Towers cut back into the Inner Fenders to fit the 429 Hemi style Engine.
Quote from: tesgt350 on October 13, 2022, 12:45:01 PM
Quote from: deathsled on October 13, 2022, 09:54:41 AM
You're welcome. I was astounded that the shock towers would accommodate such an engine. I thought they had to be cut at the factory when a customer ordered the 428. Seemingly not. One size fit all. Also surprising that a G.T. 500 owner gave up this engine to put a K code 289 in his 500. Times were different then.
You must be thinking of the BOSS 429. They had to have their Shock Towers cut back into the Inner Fenders to fit the 429 Hemi style Engine.
I thought they did it for all of them. I was wrong. I learned something today.
Quote from: deathsled on October 13, 2022, 08:31:50 AM
https://www.hagerty.com/media/member-stories/1970-boss-mustang-427-cu-in-secret/
"Submitted for your approval."
Mr E thanks for posting, great story on a kick ass car a BOSS 427 that never was not just maybe shoulda been
Cleaned the articles scrappy pictures
Quote from: JohnSlack on October 13, 2022, 12:27:23 PM
Quote from: deathsled on October 13, 2022, 09:54:41 AM
You're welcome. I was astounded that the shock towers would accommodate such an engine. I thought they had to be cut at the factory when a customer ordered the 428. Seemingly not. One size fit all. Also surprising that a G.T. 500 owner gave up this engine to put a K code 289 in his 500. Times were different then.
Yes, the FE engine except for the SOHC is a simple drop in. For a long time I thought of putting a 427 in my 1969 BOSS 302.
John
You could and mothball the 302, terrorize small towns and bedroom communities with the 427. I like how the owner mentioned that no one had a clue it was a mighty 427 when he opened the hood (something I would have expected with today's crowd and not so much from the gearheads of yesteryear).
The photo jeannie has granted your wish, abracadabra
The photo jeannie has granted your wish, abracadabra
The photo jeannie has granted your wish, abracadabra
The photo jeannie has granted your wish, abracadabra
The photo jeannie has granted your wish, abracadabra
Quote from: FL SAAC on October 13, 2022, 01:10:10 PM
The photo jeannie has granted your wish, abracadabra
How you do dat?
Here is some more clear pictures My Boss 302 with 427 sideoiler stroked to 482ci Just about finished.
Whoooodogie that's a nice ride !
Quote from: nctrucks on October 14, 2022, 12:03:35 AM
Here is some more clear pictures My Boss 302 with 427 sideoiler stroked to 482ci Just about finished.
Will go like the wind I would imagine
I just did a set of BU/BT dual 780cfm carbs for a member here who has a 427 medium riser in a Boss car.
Quote from: deathsled on October 13, 2022, 09:54:41 AM
You're welcome. I was astounded that the shock towers would accommodate such an engine. I thought they had to be cut at the factory when a customer ordered the 428. Seemingly not. One size fit all. Also surprising that a G.T. 500 owner gave up this engine to put a K code 289 in his 500. Times were different then.
Look at the 429 vs a 428. The 428 has the towers, the 429 does not
Quote from: nctrucks on October 14, 2022, 12:03:35 AM
Here is some more clear pictures My Boss 302 with 427 sideoiler stroked to 482ci Just about finished.
Very cool, that's my kind of ride!!
FL SAAC, I'd phrase that as "The Boss 429 has SHAVED shock towers". They weren't totally removed.
Drew Pojedinec did a fabulous job restoring the set of BU/BT dual 780cfm carbs for this project and my original 1967 GT350 carb.
Quote from: rhjanes on October 14, 2022, 10:13:55 AM
FL SAAC, I'd phrase that as "The Boss 429 has SHAVED shock towers". They weren't totally removed.
Actually the BOSS 429 shock towers were a completely different stamping and were installed on the assembly line at Kar Kraft. The BOSS 429 is a great story. If you are really not educated on the whole process it is worth being educated on.
John
QuoteActually the BOSS 429 shock towers were a completely different stamping and were installed on the assembly line at Kar Kraft. The BOSS 429 is a great story.
Hmmm, where can I find this information? I thought they were installed by Ford.
Quote from: Wedgeman on October 13, 2022, 12:33:00 PM
There is still time...John Slack... ;D ( Go with the Stroked Tunnel Port).... ::)
Wedgie,
Unfortunately after collecting an NOS 427, having acquired two pairs of Tunnel port heads, one NOS set, one set from Bill Ireland, a single Dominat or intake, and a Dual plane 2x4 Tunnel Port intake manifold. I started down the Dual Dominator BOSS 302 TA intake manifold rabbit hole. That trip took me to the end of the internet and back, eating all of my FE parts collection in the meantime. I'm quite sure that if I started down the 427 rabbit hole again when I came back out my house, my wife, daughter and cat would be gone when I came back out. However I will say that every time I see your car my heart skips a beat accordingly.
John
Quote from: Coralsnake on October 14, 2022, 02:34:40 PM
QuoteActually the BOSS 429 shock towers were a completely different stamping and were installed on the assembly line at Kar Kraft. The BOSS 429 is a great story.
Hmmm, where can I find this information? I thought they were installed by Ford.
Possibly, I know that some of the early cars left Dearborn with 428 engines as mule motors. The shock towers were a different stamping and as you say and as I say we're installed by FoMoCo whether at Dearborn or Kar Kraft I don't know.
Honesty, I dont know. I was under the impression that Ford installed the shock towers in the cars....off to find out! 🤔
Well that took two minutes to figure out. Boss 429 shock towers were done at the Dearborn assembly plant by Ford employees. Thank you for the opportunity to clarify that for people who care about the facts.
It is interesting to note that the BOSS 429; will bolt directly into the 1971 Mustangs without modification.
John
Quote from: FL SAAC on October 14, 2022, 03:17:40 PM
To achieve this goal, partially completed SportsRoof Mustangs were shipped to Kar Kraft in Brighton, Michigan. These cars were originally destined to receive the 428 SCJ engines, but the massive 429 with its exotic, aluminum cylinder heads would not fit into the Mustang body. Kar Kraft employees modified the engine compartment by hand relocating the shock towers outward. Specifically, the upper A-arms were moved out 0.5 inch and lowered 1.0 inch. The lower A-arms were moved outboard to increase camber and the front spring rates were stiffened, along with using Boss 429-specific spindles and control arms. This alone made the Boss 429 a formidable handler in contrast to other big-block Mustangs. It also cost plenty of money. Ford lost a substantial amount of money on every Boss 429 that left Brighton.
The Boss of Bosses - 1969 Mustang Boss 429 | Hemmings
https://www.hemmings.com/stories/article/the-boss-of-bosses-1969-mustang-boss-429
I no longer own a BOSS 429, I've had one 1969 and was partners in two 1970s therefore some of the details escape me in instant memoryland. However if you look at the pictures you can see the details of the shock tower installation. The final picture shows the shock tower to firewall brace that was added on the outside. These pictures go along with the explanation in the answer I've quoted. These pictures are of KK1383 when I owned her. I apologize for any doubts I caused.
John
Mr Slack, I apologize for not showing my work. I consulted Charlie Henry's book entitled Kar Kraft. As you know, Mr Henry was a Kar Kraft employee. On page 111, he clearly outlines the misconception that the shock towers were modified by Kar Kraft.
I also had Coralsnake University Graduate Students reach out to Mr "Special" Ed Meyers and the SAAC. Both confirmed the information in the Kar Kraft book as accurate. Ed has seen a few 429s and worked on a couple cars.
As professor emeritus, I have to often remind the graduate students, an internet search is not proper research, any clown can do a google search.
I appreciate your understanding and willingness to listen. Thanks for sharing the great photos
Bob Perkins says, "Kar Kraft, in its old location on Merriman Road in Livonia, Michigan, might have cut and beat on the shock towers of the preproduction Boss 429 Mustangs to figure out if it could fit the engine to begin with. Job 1 (KK1215) has the same shock towers as the last '69 built."
Similar to the Cobra Jet and Boss 302 shock towers, Boss 429 shock towers were also reinforced compared to a regular small-block V-8 or six-cylinder. Ford sold complete Boss 429 shock towers left and right. Kar Kraft didn't pull the front fenders off the Boss 429 on the assembly line. The engines were installed, but the shock towers weren't widened for engine clearance. Boss 429 shock towers are OEM and have Ford part numbers, D0ZZ-16055-B for the left side and D0ZZ-16054-C for the right.
What's Up With Boss 429's? - Classic Muscle Car - Mustang Monthly Magazine
https://www.motortrend.com/news/mump-0709-boss-429-mustangs/
Quote from: FL SAAC on October 14, 2022, 04:57:32 PM
Bob Perkins says, "Kar Kraft, in its old location on Merriman Road in Livonia, Michigan, might have cut and beat on the shock towers of the preproduction Boss 429 Mustangs to figure out if it could fit the engine to begin with. Job 1 (KK1215) has the same shock towers as the last '69 built."
Similar to the Cobra Jet and Boss 302 shock towers, Boss 429 shock towers were also reinforced compared to a regular small-block V-8 or six-cylinder. Ford sold complete Boss 429 shock towers left and right. Kar Kraft didn't pull the front fenders off the Boss 429 on the assembly line. The engines were installed, but the shock towers weren't widened for engine clearance. Boss 429 shock towers are OEM and have Ford part numbers, D0ZZ-16055-B for the left side and D0ZZ-16054-C for the right.
What's Up With Boss 429's? - Classic Muscle Car - Mustang Monthly Magazine
https://www.motortrend.com/news/mump-0709-boss-429-mustangs/
Correct and for the 1969 cars the part numbers were C9ZZ-16054-B (except BOSS 429) and C9ZZ-16054-C (BOSS 429) for the passenger side part that goes from the radiator support to the firewall including shock towers. In addition to C9ZZ-16055-B (except BOSS 429) and C9ZZ-16055-C (BOSS 429) for the Driver side part that goes from the radiator support to the firewall including shock towers. Reference the 1970 MPC.
If nothing else this thread has put a little life in the least used section of this website, 1969-1970 Boss (should be BOSS) 302/429.
Excellent use of the quote feature Mr Slack. You have preserved the integrity of the thread.
👍
Quote from: Coralsnake on October 14, 2022, 04:33:49 PM
Mr Slack, I apologize for not showing my work. I consulted Charlie Henry's book entitled Kar Kraft. As you know, Mr Henry was a Kar Kraft employee. On page 111, he clearly outlines the misconception that the shock towers were modified by Kar Kraft.
I also had Coralsnake University Graduate Students reach out to Mr "Special" Ed Meyers and the SAAC. Both confirmed the information in the Kar Kraft book as accurate. Ed has seen a few 429s and worked on a couple cars.
As professor emeritus, I have to often remind the graduate students, an internet search is not proper research, any clown can do a google search.
I appreciate your understanding and willingness to listen. Thanks for sharing the great photos
No apology necessary, it is I who was operating on the ages old misinformation outlined and corrected on page 111, I just went back and read that page. It seems that way back when I owned KK1383 I had learned a lesson that was incorrect. it is my belief that we all continued on with that particular misinformation due to the bubbling in a lot of the sheet metal around the apron areas both front and rear that was observed in used BOSS 429 Mustangs in the mid eighties to early nineties. This bubbling lead us to believe that the aprons were welded at Kar Kraft. Which as Charlie Henry points out would be an extremely inefficient procedure. My pictures will remain up as they are still a good reference of original BOSS 429 shock towers.
A funny story regarding KK1383, It was really a beautiful Raven Black "S" engine car, the paint was gorgeous and I had bought the car from Alan Root. The reason the car was taken apart to be painted was the paint was ruined when Alan's cat threw up all over one area.
The sad story of KK1383 was that it was my dream car. I loved owning that car and ultimately sold it because at that time I was stuck in the swan song of the quagmire of "MORE" syndrome, I continued to add cars to my collection of cars and should have been happy to have what I had.....But I wanted MORE, cars, parts, engines and stuff. I traded that car to a friend of mine for an "R" code 428 Drag Pack car, and a bucket of cash. The IRS was helping me deal with "MORE" syndrome and the bucket of cash was their way of forcing me to prioritize the ever growing collection of stuff. within a year I had shedded everything that I had acquired. If left to my own I'd still be chasing the more...lucky for me I have a wife that keeps me from that.
John
No worries we have all the too much stuff problems.
I never did care for the habits of cats! 😉
I am glad I could help. How would you like to come across those service parts? A pair of NOS Boss 429 frame assemblies...
Quote from: Coralsnake on October 14, 2022, 06:08:14 PM
No worries we have all the too much stuff problems.
I never did care for the habits of cats! 😉
I am glad I could help. How would you like to come across those service parts? A pair of NOS Boss 429 frame assemblies...
Over the years I had a driver's side frame assembly...that I didn't need, but hey I acquired it! I had an NOS 1969 BOSS 429 Hood that I acquired and didn't need. So now I try to find people who need parts when I come across items that are that rare. Karma is good, I've got what I need except for one 1969 grill support for my 1969 car.
I agree finding stuff (and information) is the best part
Quote from: Coralsnake on October 14, 2022, 07:15:30 PM
I agree finding stuff (and information) is the best part
The only thing that I was having trouble saying No! to was rare and exotic intake manifolds for the BOSS 302. I don't have that problem anymore because I have everything I want to run. Now I'm just building the noisy parts.
John
Rare speed parts alone are aesthetically pleasing never mind their functionality. I fully understand you.
Quote from: nctrucks on October 14, 2022, 12:03:35 AM
Here is some more clear pictures My Boss 302 with 427 sideoiler stroked to 482ci Just about finished.
Have you finished your car? Any new pictures you care to share?
Roy
The big change to the chassis came in 1967 when they moved the towers far enough to hold the FE.
Holman Moody came up with this fix for the 65 A/FX cars to fit the cammer. Eliminated the top of the tower and made a leaf spring that went between the lower control arm and chassis