Mustang MonthlyHow To Tech Qa
Radiator Overflow Hose, Boss Voltage Regulators, and More Vintage Mustang Concours Technical Questions Answered
Radiator Overflow Hose
I have a 1969 G.T. 500 and a 1970 Boss 302. How should I route the radiator overflow hose. Does the hose go under or over the radiator hold-down bracket? I have mine routed on top of the radiator bracket. A well-known judge told me it should go under the bracket? What’s your opinion?
Typically the hose is routed on top of the bracket. I have several factory photos showing this routing. I am going to include the underhood photo from 1969 Super Stock Magazine for reference. The second photo is a 1970 Boss 302.
Boss Voltage Regulators
Did the 1970 Boss 429 use the C8AF-10346-A voltage regulator with silver lettering or the C8TF-10346-A with yellow ink? Most charts list if the car had a 55-amp alternator, it used the C8TF truck heavy-duty regulator. I noticed the white 1969 Boss 429 you restored used a silver-lettered C8AF-10346-A unit on it. What do you recommend for our 1970?
Mark (last name withheld)
The C8AF-10346-A with silver Autolite lettering was typical for all 1969-1970 Boss 302/429s. If the original failed, Ford parts and service called for it to be replaced with the Autolite GR-341.The GR-341 was always the C8TF-10346-A unit. The C8AF-10346-A was an assembly-line unit only.
Strut Rod Differences
I have a 1969 Boss 429. I noticed one of my car’s strut rods was damaged from what appears to be a previous owner jacking the car up on it. According to several reputable sources, I have been told the Boss 429 strut rods are unique to the Boss 429. Is this true? What is the difference? A picture would be very helpful.
Via the internet
The 1969 Boss 429 uses the Ford PN C9ZZ-3468-A/B strut rods. The 1969 Mustangs without F60x15 tires used the C80Z-3468-A/B. The C9ZZ-3468-A/B rods are bigger where they attach to the lower control arm, as you can see in the provided picture. For 1970, Ford used the C9ZZ-3468-C/D on all Mustang applications. The C9ZZ-3468-C/D strut rods were heavy-duty units similar to the 1969 C9ZZ-3468-A/B, but did not have the end double threaded for an extra lock nut. As a result, the 1970 version is about an inch shorter. The first photo compares the C80Z to the C9ZZ strut rod. The second photo compares the 1969 to 1970 strut rod.