what commonly breaks first in our difs?
04-23-2002, 02:35 PM
#1
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Car: 1987 IROC
Engine: Vortec 350 TPI
Transmission: 7004r
what commonly breaks first in our difs?
A friend just blew his diff, I'm going to take a look at it tonight after work. what usually breaks on our 10bolts? If the spider gears go, do you lose both wheels? his is an open end dif.
I'm just hoping that if he lost his center gears it might be an easy fix by replacing them with another set or with an E-Z locker/powertrax setup...
I'm just hoping that if he lost his center gears it might be an easy fix by replacing them with another set or with an E-Z locker/powertrax setup...
04-23-2002, 03:24 PM
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Car: 04 GTO
Engine: LS1
Transmission: M12 T56
All the gears in our rears are w-e-a-k weak. Pinion, ring, spider, they all break in these rears. Just pull the cover and you'll have your answer, no point in playing guessing games
04-25-2002, 02:22 PM
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Car: 82 camaro SC
Engine: 350
Transmission: 700r4
If you do alot of one-wheeled burnouts, the spider gears wear out pretty fast--mine were worn sharp when I removed them. The ring gear is also fairly weak since it's not very big. A common problem I've seen is the start to leak without anyone seeing the leak, then it runs out/low of fluid, then it self-destructs. Measure how much fluid you get when you pull the cover.
04-25-2002, 04:20 PM
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Car: 1999 Pontiac T/A Firehawk
Engine: ***'s Engine
Transmission: T56
They're all weak.
I blew the posi in mind 'cause I had the gears set up for strength (yes, they whine on decel). The previous set of gears on the posi chipped 3 teeth on the ring gear.
7.5"/7.625" 10-bolts are pieces of crap.
I blew the posi in mind 'cause I had the gears set up for strength (yes, they whine on decel). The previous set of gears on the posi chipped 3 teeth on the ring gear.
7.5"/7.625" 10-bolts are pieces of crap.
04-28-2002, 06:17 PM
#7
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lower gear ratio gear sets like 3.32 and 3.73 and 4.11 etc are weaker, mainly because of how frickin smal the pinion head diameter is, that means less tooth contact patch between teeth of ring and teeth of pinion, compared to contract patch of higher ratios sets where the gears are closer to same diameter ansd teeth will intermesh alot more
tradeoffs, tradeoffs, speed = weaker
tradeoffs, tradeoffs, speed = weaker
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04-28-2002, 10:45 PM
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Car: 1987 IROC
Engine: Vortec 350 TPI
Transmission: 7004r
dude is the luckiest guy, the person who put the diff together earlier, only put 3 center gears in 
he ended up shattering the other top gear, nicked up his pinion gear a little bit too, he just wanted to put new spiders in and keep runnin it.
so i slapped it together with some old spiders.
he ended up shattering the other top gear, nicked up his pinion gear a little bit too, he just wanted to put new spiders in and keep runnin it.
so i slapped it together with some old spiders.
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