Guest Anonymous Posted September 12, 2002 Share Posted September 12, 2002 I hear alot of things about the ford rear end, that its indestructible, and its pretty, and it can handle insane torque. is this true? i just got my LS1. im gonna make it push around 800 hp. whats the toughest rear-end for frequent hard launches? any help would be appreciated, and thx in advance Quote Link to comment Share on other sites More sharing options...
Jeff Posted September 12, 2002 Share Posted September 12, 2002 The Ford is the toughest next to Chryslers Dana 60. Both rear ends can withstand your 800 hp goal. Just FYI it's a 9" not a nine bolt. This refers to the diameter of the ring gear. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted October 9, 2002 Share Posted October 9, 2002 A 31 spline ford rear meets all specs for a GM 1 ton on the spinning parts the housing is the 1 thing that makes it a 1/2 ton part the ford rear is 100 lb lighter than a 10 bolt GM and this is do to the housing Quote Link to comment Share on other sites More sharing options...
Mike C Posted October 9, 2002 Share Posted October 9, 2002 The ford rear is NOT 100# lighter than a GM 10 bolt. They are very close to the same weight. In equivalent axle lengths. Also, which 10 bolt? THere is an 8.2" ring gear, 8.5" ring gear, 7 1/2" ring gear and 7 5/8" ring gear. THe smaller the gear, the lighter the housing. Give or take a few pounds. The GM uses a cast housing and stamped cover. The Ford uses a stamped housing and a cast center section. Axle tube thickness of both is equal at ~1/4". This changes depending on what vehicle the housing was designed for however. Both uses 3" axle tubes (8.5" 10 bolt and 9" late model cars use smaller axle tubes to get weights down but limit you to axle diameter spline count)The center of the Ford is larger than the GM and the lower pinion placement of the Ford requires more clearance above the "pumpkin" than the GM design in order to maintain same u-joint angles. It also costs about 1-1.5% in frictional losses compared to the GM. Stock-to-stock, strengths are approximately equal. Advantage Ford with their non-tapered axle and availability of aftermarket parts, but if you have to buy axles, differentials, and gears it's pretty much a wash except for having to pony up for the c-clip eliminator on the 10 bolt. 33 spline axles are max for the 8.5" 10 bolt while you can go at least 35 spline on the Ford. Quote Link to comment Share on other sites More sharing options...
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