GM 14-bolt FF Rear End with 149k miles
Hi to all, Our TV is a GMT400 1997 GMC K2500 7.4L Burb with 149k miles. It is 8-lug, 3.73, GVWR 8,600, with GAWR RR of 6,000 lbs for the full floater rear axle. We believe the rear end also has 149...
Forum Discussion
Thanks BenK and ScottG.
ScottG, It definitely has RPO G80 and it is 3/4 ton full floater axle, 8600 GVWR and 6,000 GAVR on the rear axle. The owners manual is generic across all Burb models and doesn't mention any additive.
BenK, many thanks for the education on that diff. And so glad to hear that you have more than the 150k with hard mileage. I've always heard this diff was built tough, and in fact that it is also under many of the 1-ton trucks too.
Is this the recommended syn fluid"
http://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Fully_Synthetic_Gear_Lube_75W-90LS.aspx
Edit: Thanks BenK for the links to the educational videos. The first three were found but the last one wasn't. Great
ScottG, It definitely has RPO G80 and it is 3/4 ton full floater axle, 8600 GVWR and 6,000 GAVR on the rear axle. The owners manual is generic across all Burb models and doesn't mention any additive.
BenK, many thanks for the education on that diff. And so glad to hear that you have more than the 150k with hard mileage. I've always heard this diff was built tough, and in fact that it is also under many of the 1-ton trucks too.
Is this the recommended syn fluid"
http://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Fully_Synthetic_Gear_Lube_75W-90LS.aspx
Edit: Thanks BenK for the links to the educational videos. The first three were found but the last one wasn't. Great
