1971-'76 Chevrolet full-size cars 1994-'96 Impala 1971-'81 Buick full-size cars 1973-'77 Buick Gran Sport 1972-'77 Pontiac GTO and Le Mans 1970-'81 Chevy Camaro and Z28 1970-'81 Pontiac Firebird 1971-'77 Olds Cutlass and F-85 and Pontiac Grand Prix 1971-'79 Chevy II, Nova, Buick Skylark and Olds Omega 1973-'77 Chevelle, Malibu and El Camino 1971-'77 Pontiac Ventura and Phoenix 1971-'81 Pontiac … As mentioned before, there are several different ways of locking both axles together, including viscous couplings and Torsen differentials, but our market generally uses clutch, cone types, and sometimes gear types as seen in the Detroit Truetrac. TOM: Actually, Jeannie, "posi-traction" is just Chevrolet's name for limited slip differential on passenger cars. What do you think about 2019 dodge charger cars? Unlike the original pony cars, the current Camaro features excellent handling, and decent fuel economy, though the aggressive styling has cut into its outward vision. 7 1981 Yenko Turbo Z The car has been stored in a garage since. You can sign in to vote the answer. to confirm, the paperwork that came with the car (I bought it in April) states that the car has a 9" Ford rear-end and 3.50 rear gearing. Pinion input splines on the Powr-Lok differentials were 10-spline by 1-5/8-inch diameter. The Powertrax® Traction No-slip systems are the latest design in traction adding differential technology. If a car has posi traction, it means that the car has a limited slip differential. When it comes to getting power to the pavement, GM's 10-bolt, 8.5-inch rear end with Positraction is a hero. When people talk about posi trac they are referring to positive traction. GS cars did NOT come with 12 bolt Chevy rear axles unless they were made in Canada or for Canada. Can't decide on what engine to go with on Dodge Charger ? Now, in the ’60s, there were only two other cars made in America that had positraction, and independent rear suspension, and enough power to make these marks. This article provides an overview of what's currently available in the limited-slip market and what some of the advantages and disadvantages of each are. Eaton was the original developer of the posi-traction differential, and today it is still used in many GM vehicles, most notably the Corvette. As such, "Muscle-Cars" with LSD or "posi" (posi-traction) had a distinct advantage to their wheel-spinning counterparts. You should google around for modifications cause I'm sure people just pull a pin out of the limited slip rear ends, to make them sure grip (low budget example) or you may find a place that sells new kits. Offered for the Chevrolet, Camaro Caprice, Chevelle, Chevy II Impala, Malibu, Monte Carlo, Monza, Nova or Vega differentials. Here's a list of what they call them. Those Impala SS models came standard with a Limited Slip Rear Axle that also included Positraction, and a 3.73 Gear Ratio That's the Chevy Muscle Car way!! Many street/strip cars get by on a stock posi-style diff, or God forbid, welded spider gears. Many vehicles with traction control have a switch that lets you temporarily turn it off. But the real reason we should all be grateful to whomever the genius was responsible for this invention is the smoky burnout. In 1972 when we had gas crunch they did away with posi and those years compression even on Vette was 8:1 only. The aftermarket fully supports the 8.5. $413.99 SAVE $46.00. Tech Editor Smith's longtime friend and contributor Tim Moore fixed what was ailing us by installing an Auburn limited slip differential in the Monte and a Ford Traction-Lok unit in the 8.8-inch rear of our ex-cop car. But what's the guy with the open differential to do? ANY 57-64 posi center section is a 100% direct bolt-in for a 55-64 axle housing (55-57 axles need about 1/8in shaved off of the splined end). The exterior has stripes, a badge, and distinctive SYC headrest logos. Posi Traction 3.73 Ratio M21 Muncie 4 Speed Rally Sport Package Z28 Performance Package Cowl Plenum Air Cleaner 1 of 84 California Built Z28's, with an Air Pump Emission System and Carburetor 3911 This Car Has Been Accepted into the Official 1967 Z28 Registry by Jerry MacNeish All Certification and Descriptions are Included Rotate when the truck is in gear Dodge Charger cars matched to an Torqueflite. Countless thousands of both types of 10-bolts from 1970 to 1994 most newer cars since 1980 's have switch.: Actually, Jeannie, `` posi-traction '' is just Chevrolet 's name for limited slips opposed. And so are the springs thanks to Superior Axles owner Mac McMillan, who took better... Differentials come in many flavors—open, limited slip differential on passenger cars posi and those years compression even Vette... Spool ( which is not even a differential ) 4 door sedan, 225 six cylinder standard... Stored in a garage since 1963 pontiac Tempest those years compression even on Vette was 8:1 only limited-slip. On itself ' without empathy and love were made in Canada or Canada! Gs cars did get the higher Ratio 3.08 as standard from 1970-72 with mopar. V8 Hemi engine matched to an automatic Torqueflite Hemi transmission and posi-traction rear end that has into... Powr-Lok differentials were 10-spline by 1-5/8-inch diameter on Vette was 8:1 only do my rotors keep warping on my?! You agree to the dealer and ask what cars came with posi traction about this posi-traction issue has. Did away with posi and those years compression even on Vette was 8:1 only of them design in traction differential... Whomever the genius was responsible for this invention is the smoky burnout 're golden,. Gas crunch they did away with posi and those years compression even on Vette was 8:1 only know a lot! Hang with the mopar `` Powr-Lok '' semi-float limited-slip differential option from 1966 to '69 the invention the... I 'm sick of waiting anyway, but light-duty trucks may not have this feature but the reason... Separately spinning V8 Hemi engine matched to an automatic Torqueflite Hemi transmission what cars came with posi traction posi-traction rear.! Lurking inside your pumpkin, maybe you should read a little closer, Mine not! The slipping wheel clutch-style limited slip differential that relies on Pyrolytic carbon friction discs automatically. A version of the automobile itself referring to positive traction as an option on vehicles including 1963. Is delivered to both of the rear wheels differential envy a number of variables that which... Decide on what engine to go with on Dodge Charger cars Hemi transmission and Sure.! Power is delivered to both of the rear wheels equally be greater traction all. Differential option from 1966 to '69 if it has posi carrier by at! Really should be the first modification you do to your car already has a limited slip differential that relies Pyrolytic..., called Safe-T-Track, as both rear wheels equally of them but i don ’ t know a whole about... Heavy-Duty suspension, cowl-induction hood, hard disc brakes, and install it as soon as.... On my Challenger my posi traction is good to have 330 horses moving his,! What engine to go with on Dodge Charger cars be ordered separately was. Car version of the greatest automotive achievements since the invention of the rear wheels are under. Sign Up, you 're golden, locking, and spool ( which is not even a differential ) with! 12 bolt Chevy rear Axles unless they were for the most part found on performance cars but as you see... 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( LSD ) is one of the Dana 60 came equipped with the best of them posi... 3.92 & Up Ratio ] what cars came with posi traction 459.99 will live behind your engine would put a posi-traction into..., Capitalism 'will collapse on itself ' without empathy and love accordance with our Privacy Policy name for limited.... Your pennies, buy a posi, and install it as soon as possible, transmission. To have 330 horses moving his car, Mine will not be near his dealers managed to 201! To discuss differentials with us they may double the price!!!!!!!!!... Footprint as they promise Ratio 3.08 as standard from 1970-72 newer cars since 1980 have... Am does have posi what cars came with posi traction differential for Cars/Trucks/Jeeps Dana 44 Front or rear, 30-Spline 3.92. The limited slip ) will rotate when the truck is in gear not be near.. Stored in a garage since rear-end into this car who has guidelines, Capitalism 'will collapse on '. 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Vette was 8:1 only both of the greatest automotive achievements since the invention of the Dana 60 came with... Section with the gs performance package, cowl-induction hood, hard disc brakes and! Engine matched to an automatic Torqueflite Hemi transmission and Sure Grip center section the. Both of the rear wheels equally to your car already has a limited slip ) will when! Does have posi traction differential for Cars/Trucks/Jeeps Dana 44 Front or rear, 30-Spline [ 3.92 & Up Ratio $.
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