Allstar Performance Ring and Pinion Set — GM 7.5in 3.23 Ratio | ALL70110 1979-pontiac-firebird-esi7949282 25 IN(O)/OUT(O) SUPER 44 409S

25 IN(O)/OUT(O) SUPER 44 409S Description_ASC Universal Muffler - Some adaptation may be required

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Allstar Performance Ring and Pinion Set — GM 7.5in 3.23 Ratio | ALL70110 1979-pontiac-firebird-esi7949282 25 IN(O)/OUT(O) SUPER 44 409SThis Allstar Performance ring and pinion gear set is built for GM 7. 5in 10 bolt rear end housings using the 3 Series carrier. It uses a 27 spline pinion and a 3. 23 ratio ring and pinion pair that is lapped together at the factory as a matched set for quiet operation. Suitable for race, street, and off road use. Allstar Performance Ring & Pinion Spec Sheet (PDF) Compatibility Fits GM 7. 5in 10 bolt rear end housings, 3 Series carrier, 3. 23 ratio, 27