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- - 7.5 or 8.5? (https://chevroletforum.com/forum/trailblazer-27/7-5-8-5-a-94448/)

Curbfeeler327

March 1st, 2019 1:07 PM

7.5 or 8.5?

1989 S-10 Blazer. RPO codes {GU6} rear axle-3.42 ratio,{G80} locking differential. I'm trying to determine whether it's a 7.5 or a 8.5. Code on axle tube is (PML C 327 2), # cast on pumpkin is 14030352. Can anyone help?

mountainmanjoe

March 1st, 2019 3:10 PM

Differential Identification | Gearhead Diva

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