Mustang MonthlyHow To Tech Qa
Vintage Mustang Concours Technical Questions Answered
Space-Saver InsertsI have a Boss 429 trunk detailing question. What was the original finish on the inserts that are used on the trunk floor to mount the space-saver tire and inflator bottle? Also, what was the finish on the mounting bolts? Did the bolts have any identification marks? Thanks!
The original finish on the inserts is clear cadmium. The finish on the bolts was bare steel on the “A” logo bolts and phosphate and oil on the “M” marked bolts. These were the most common bolts I’ve seen used. The inserts were installed after the Unibody was painted. Often restorers miss this detail.
Black Tape DetailsI have seen black tape over the taillight bucked on several 1970 Boss 302 Mustangs. Was this the same type of gaffer’s tape used under the door, scuff plates, etc., or something else? This is a detail we missed on our restoration.
The tape used on the taillight housing was a black masking tape. I believe this tape was applied by the supplier of the taillamp assembly to Ford. The gaffer’s tape used under the scuff plates was applied during the assembly of the car by assembly line workers.
Correct Hoodscoop SheenWe would like to know what product you use for the black finish on the 1970 Boss 429 hoodscoop. The PPG Hot Rod Black we tried seemed too flat. We tried to flatten some PPG Concept Black, but it looked milky—not black enough. We saw the two 1970 Boss 429s at the Kansas City MCA show and really liked the color and sheen. Please share the mix code. Thanks.
Fellow Boss Restorer
Via the Internet
The paint we use on the 1970 Boss 429 hoodscoop is factory pack Ditzler DDL 9423 acrylic lacquer. The scoops were originally painted in RM lacquer at Kar Kraft. We use PPG DP90LF as a base, or it may be used as a sealer if the scoop requires repair. It’s difficult to replicate the OEM lacquer finish with flattened urethane black.