8.8 limits
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
How much torque does the 429 put out?
Regardless of your answer, 35's are pretty close to what the 8.8 can handle under reasonably stock power. Put a lot of torque under the hood and your 8.8" probably won't last too long.
There are a ton of aftermarket option for making your axle a lot stronger. A C-clip eliminator kit and some aftermarket shafts go a long way with this axle.
Regardless of your answer, 35's are pretty close to what the 8.8 can handle under reasonably stock power. Put a lot of torque under the hood and your 8.8" probably won't last too long.
There are a ton of aftermarket option for making your axle a lot stronger. A C-clip eliminator kit and some aftermarket shafts go a long way with this axle.
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Senior User
Joined: Sep 2007
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from what the internet states the 429 scj has 370hp @5200 and 450ft lb tq @ 3400, but back in the 70s they dropped the crap out of the engine rating so the insurance companys wouldnt charge people an arm and a leg.
its for an pre runner im looking into building, i just know the truck i want to buy has a dana 70U rear end and is drum brakes and is really heavy so i would like to put the 8.8 i have in my garage in the back since its lighter. but thats only if i know i wont be poppin gears.
my plans were some 300m axles and a c-clip kit with a spool so its not so much loading and unloading like a lunchbox locker.
its for an pre runner im looking into building, i just know the truck i want to buy has a dana 70U rear end and is drum brakes and is really heavy so i would like to put the 8.8 i have in my garage in the back since its lighter. but thats only if i know i wont be poppin gears.
my plans were some 300m axles and a c-clip kit with a spool so its not so much loading and unloading like a lunchbox locker.
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Joined: Nov 2008
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The 9" rear was used a long time and it went through a couple of improvements along the way. In it's last iteration it had a bigger axle bearing.
The 8.8 has a few weak points compared the 9", clip retainers, pressed in axle tubes and it's pinion is not fastened at the end of the pinion. There have been kits designed to improve upon those weaknesses. The rear I just had built had the stock axle bearings cut off and 9" big bearing ends welded on instead of using c-clip eliminators which have been know to fail from extended street use. Welding the tubes eliminate twisting or sagging from hard use and the 8.8 girdle supports the end of the pinion.
The 8.8 has a few weak points compared the 9", clip retainers, pressed in axle tubes and it's pinion is not fastened at the end of the pinion. There have been kits designed to improve upon those weaknesses. The rear I just had built had the stock axle bearings cut off and 9" big bearing ends welded on instead of using c-clip eliminators which have been know to fail from extended street use. Welding the tubes eliminate twisting or sagging from hard use and the 8.8 girdle supports the end of the pinion.
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Senior User
Joined: Sep 2007
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Yea i welded the tubes to the pumkin on my ranger 8.8 to after i.heard the plugs tend to spin, good idea on the axle bearings and thanks for the girdle idea i didnt know they did that.
Overall i think it would be a better idea to sell the dana 70 and 8.8 to buy a 9in lol
Overall i think it would be a better idea to sell the dana 70 and 8.8 to buy a 9in lol
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