The 1960s were an amazing time for domestic auto manufacturers. Virtually everyone that was in the business was working at full speed to fill orders and meet demand levels from a country that was booming financially and wanting cool cars in their driveway. One of the interesting phenomena of that period was the marketing of things that were essentially the same between multiple brand and platform models and across different manufacturers. Limited slip rear ends were one of those things that EVERYONE offered but all had a snappy name for. How good a muscle car guy are you? Can you call all of the different names used by manufacturers.
Ford, Chevrolet, Buick, Cadillac, Chrysler, AMC, Olds, and others all had different names for their differentials. We all know the ever present “posi” terminology that generated from one of these companies but do you know the others? This is a hardcore question and we think that it will take a real muscle car freak to answer it correctly and first so the first guy that can correctly name the limited slip differential from all of the major American manufacturers in the 1960s will win some hot sticker action. If we missed anyone above, make sure to put them on your list. First, most accurate and complete list wins the prize.
BangShift Question Of The Day: Can You State EVERY 1960s Manufacturer’s Name For A Limited Slip Differential?
Ford – Traction-Lok
Chevy Positraction
Amc Twin Grip
Pontiac Safe T track
Chrysler Sure grip
I cheated.
In the 1950s and 1960s many manufacturers began to apply brand names to their LSD units. Packard pioneered the LSD under the brand name “Twin Traction” in 1956, becoming one of the first manufacturers. Other factory names for LSDs include:
Alfa Romeo: Q4, Q2
Audi: Quattro, Quattro with Sport Differential (rear axle)
American Motors: Twin-Grip
Buick: Positive Traction. Gran Sport models used the term “Limited-slip (differential)”
Cadillac: Controlled
Chevrolet/GMC: Positraction
Chrysler: Sure Grip
Dana Holding Corporation:Trak-Lok or Powr-Lok
Ferrari: E-Diff
Fiat, Lancia: Viscodrive
Ford: Equa-Lock and Traction-Lok
Hyundai: HTRAC
International: Trak-Lok (clutches only) or Power-Lok (clutch and ramping engagement process)
Jeep: Trac-Lok (clutch-type mechanical), Tru-Lok (gear-type mechanical), and Vari-Lok (gerotor pump), Power Lok
Lincoln: Directed Power
Maserati: Equ-Tor
Oldsmobile: Anti-Spin
Pontiac: Safe-T-Track
Porsche: PSD (electro-hydraulic mechanical), Porsche Torque Vectoring/Plus (PTV/Plus, combined electro-hydraulic mechanical and brake-based type; rear axle only)
Saab: Saab XWD eLSD
Studebaker-Packard Corporation: Twin Traction
Toyota: LSD
TVR: Hydratrak
Yukon Gear & Axle: Duragrip
Mercedes: ASD, AMG Rear-Axle Differential Lock (active differential on select FR-based AMG/S models; pure mechanical variant also present on select non-S AMG models)
You forgot Detroit Locker (Ford Drag Pack).
thems fast interweb ninja fingers C1BAD66 Malibu!… you mind sharing some of your well deserved stickers
The only LSD I was interested in those days didn’t have anything to do with a car’s rear end…..