Mustang MonthlyHow To Tech Qa
Boss 429 Fasteners, Playboy Gas Cap, and More Vintage Mustang Tech
Resto Roundup: Vintage Mustang Concours Technical Questions Answered
Boss 429 Fasteners
I recently purchased a 1969 Boss 429 Mustang. I have a minor detail question for you. Were the screws that attach the snorkel to the air cleaner painted blue or natural? Mine were blue, and I’ve seen several in magazines that were blue. However, I noticed the ones in the White Thoroughbred Boss 429 of Richard Boeye’s car were unpainted. What is concours correct? Thanks!
The screws that attach the Boss 429 snorkel to the air cleaner were unpainted. Phosphate and oil, clear cadmium, and yellow cadmium are all considered concours correct for MCA judging.
Leave it Stock or Not
I was referred to you thru Marti Auto Works. I have a 1971 Mustang SportsRoof, which is an all-numbers-matching car. I am in the process of restoring the car on a rotisserie. If I change the color of the interior to all black will it hurt the value of the car? I am also thinking of making it a Mustang Boss tribute car with NASA hood, grille, and such. Will this make it more valuable from the Marti report that I attached? I am restoring the original color of Grabber Green Metallic. Any help would be greatly appreciated.
I would not change the interior color if it was my car, Tom. A white interior with Grabber Green metallic exterior is a great color combo in my opinion. I would not suggest a Boss tribute, either, if your hope is that it will increase the car’s value in some way. Adding the NASA hood is an easy bolt on during the restoration process, if you really want the look of the hood on your Mustang. I would recommend you paint both the stock- and NASA-style hoods at the same time when you restore the car, then carefully place the stock hood in storage. This way, you could return the car to stock if you or the next owner wants to do so for originality purposes.
Playboy Gas Cap?
I believe I first met you, Bob, at the first MCA national West Coast show by the Pacific Mustang Club during June 1989. I also talked with you at some other shows afterward, including the 30th anniversary show at Charlotte when you judged my 1969 Mustang 390 GT convertible in the trailered concours class, inside the white wall that the president’s security detail required. I still have that convertible I entered in both those shows just sitting, covered in my shop. I have a 1969-1973 style screw-off gas cap with a stamped, radiused Playboy bunny face. The work looks professional. Any info or your thoughts would be appreciated. I’m 80 now, and am selling most of my 15 Mustangs, and few thousand parts that I’ve collected since 1977. I own a 1978 Tangerine King Cobra with 5,426 original miles, which I still show when possible.
Via the Internet
It’s certainly been awhile since we spoke. Your gas cap started as a 1970 Autolite cap for cars with evaporative emissions. The cap has been taken apart at some time by someone to insert the Playboy insignia. The hex head screws on the back of cap indicate it was tampered with. Please send us some photos of the 5,000-mile Cobra II!
Boss Suspension ID
Do you have a picture of a Boss 429 spring seat next to a regular 1969 spring seat to show the difference? I have been told Kar Kraft modified a standard spring seat to fit the Boss 429. Thanks!
Here’s a picture of the C9ZZ-3388-A Boss 429 and the C7OZ-3388-B standard spring seat. The Boss 429 is on the left. Note that the two ears seen on the C7OZ-3388-B seat are ground off on the Boss seat. The C9ZZ-3388-A has an orange paint ID like most of the Boss 429’s unique suspension parts.