Technical > Roo Man's Room
Mopar 8 3/4 "
ricardo1967:
I agree with you George, not many cars are built with the Mopar 8 3/4" rear axle nowadays, unless it's a nostalgia themed car. Mine has it, but it's a 40-year old rail.
dreracecar:
If one is building a new car, then the choice would be a 9", If on has a car already with a working 8 3/4, then there is no real bennifit in changing it out. Now if one is building a med hp car on a buget, the mopar is a good unit
George:
--- Quote from: dreracecar on November 21, 2013, 06:41:13 PM ---They could take that years ago because traction was not as good as it is todays with todays tires and the cars were much lighter. The problem is that there is Pro-Gear material gearset available (softer to take the hit and still hold up) and you only have a hard street gear thats designed to last 200,000 miles- so now you must get them annealed a little to flex and take the impact, but then they dont last. 1500hp will get you about 20 passes (no more and maybe less). A customer running about what you have described (PG with brake)checks it every 10 passes gets about 40 passes and carries a spare with him.
--- End quote ---
Where is your customer getting the gear sets?
Paul New:
We ran hundreds of passes in our 1600 lb fed with a blown SBC running 7.40's this was with Richmond street gears
Paul New:
Oh yes but once we built a new chassis we did install a 9"
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