Nitro Gear & Axle now offers the industry's first 3.23 ratio Aftermarket Ring & Pinions to suit the classic Mopar Chrysler's 8.75" “742” case.
Tuesday, December 27, 2011 at 3:31PM 
C8.42-323-NGThe Mopar 8.75" differential is a very popular and and robust 3rd member type rearend used in a vast array of Chrysler, Dodge & Plymouth Muscle Cars form the 60’s & 70’s. The growing popularity of classic Mopar vehicles has created a need for more gear ratio options. Nitro Gear is now offering 3.23 Ratio Ring & Pinion sets for the 8.75” 3rd members with the “742” casting. The new 3.23 Ratio is well suited for muscle car owners that want to “drive” their cars on the highway while still retaining good low-end performance. Until now, the tallest ratio readily available was 3.55 which many find to be less than suitable for highway use than Nitro’s new 3.23 ratio.
Nitro Ring & Pinions are among the best in the industry. By using better materials, machining, heat treating and lapping process, Nitro can ensure a strong, quiet running, long lasting setup. Every new application is put through multi point inspections and actually installed and set up by Nitro's in-house differential experts to ensure excellent fitment and easy setup. At Nitro we see strive to meet consumer demand for new ratios and applications, and we are continually developing new products to stay ahead of the competition.
C8.42-323-NG CHRYSLER 8.75" 3.23 RATIO RING & PINION SET, FITS “742” CASTING
Nitro also offers matching Ring & Pinions, Install kits etc for all other Mopar rearends including “489” & “741” castings