The Camaro Z28 (late 70's) used the 3:42 rear end with the T350 transmission.

If I remember correctly my 90 Suburban with an OD automatic had a 3:42 rear end since I did not have the towing package.

I hope that helps.


1946 Chevy Half Ton
('56 235, '86 T5, '79 Camaro Z28 rear end, working on the '85 Jaguar XJ6 IFS)
1976 Margay Panther X, MC91B