How can you tell a 10-bolt from a 12 bolt?
First, the 10-bolt’s pinion shaft diameter is 1.438 (25 splines) while the 12-bolt is 1.625 (30 splines) which makes the 12-bolt 13 percent larger in diameter and therefore stronger. But it’s rare to see pinion shafts twist. The weak point is actually out at the axle splines.
What is a 10-bolt axle?
The GM 10-Bolt semi-floating rear axle has been in use for over 40 years. It’s been used in passenger cars, and light duty pickups and SUVs over the decades. The rear axle is a C-clip design unit, meaning the axleshafts are retained using a metal C-clip in the middle of the differential.
What is a 12 bolt axle?
The General Motors 12 bolt axle was used in GMC and Chevrolet pickups from 1964 to 1982. It is a semi floating rear axle with a 8.875″ ring gear. Its most notable weakness is the fact that it uses C clips to hold the axle shafts in place, but this can be remedied by an aftermarket C clip eliminator kit.
How can you tell if a bolt is 10?
The easiest way to identify the 8.2-inch rearend at a glance is by the shape of the housing and the spacing between the lower bolts on the cover. The 8.2-inch 10-bolt has a smooth, round, lower-case area (no cast-in protrusions), with an 11-inch cover that has a diagonal protrusion at the top.
How can you tell a 12 bolt posi?
The easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover onto the axle housing. The pinion shaft on passenger-car differentials is 1-5/8-inch in diameter and the cover is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall.
How much horsepower can a 8.2 10 bolt handle?
Roughly 550 to 600 HP total. No slicks, drag radials. No problems with the 8.2 at all.
How much HP can a 12 bolt handle?
The 12 bolt is usually good to around 600 HP. You should be fine with it at 500 HP and the automatic.
How much horsepower can a 10 bolt handle?
Here’s what I’ve been lead to believe: 7.5” 10 bolt GM rear: It will take up to about 450 HP IF the axle tubes are welded to the housing and either a differential cover with preload bolts is installed or straps are installed over the carrier bearing caps along with longer bolts.
How much horsepower can a Chevy 7.5 rear end handle?
Weak pinion gears. The 7.5 can take about 250 hp with a auto trans and last a good long time.
How much power can a 12 bolt rear end handle?
How much power can a 10 bolt rear end handle?
7.5” 10 bolt GM rear: It will take up to about 450 HP IF the axle tubes are welded to the housing and either a differential cover with preload bolts is installed or straps are installed over the carrier bearing caps along with longer bolts.
How big are the bolts on a 10 bolt Chevy?
The distance between the bottom center bolt in the cover and its adjacent bolts is 3 1/4 inches. Inside, the ring-gear bolts are the same as the 8.5 corporate unit, but the pinion-shaft diameter measures 1.438 inches. Like most 10-bolts, the axles are held in place by C-clips on the inner end of the axles.
Is the rear end of a 12 bolt truck interchangeable?
Early truck 12-bolts had axles with 12 large axle splines. The differential carriers are also narrower than those in passenger-car units. They are not interchangeable. That doesn’t mean the truck rearend is not capable of receiving performance upgrades. To the contrary, aftermarket 30-spline differentials and axles are available.
What’s the difference between a 10 bolt and a 12 bolt?
With the exception of truck differentials with 30-spline axles, and those carrying 2.41 and 2.73 gears (series two), the differentials will support all gear ratios without having to change carriers. The 8.5-inch 10-bolt also shares the same pinion shaft diameter as the more expensive 12-bolt.
How can you tell if a truck is a 12 bolt?
At a quick glance, you can also tell when you’re looking at a truck 12-bolt, because the rearend cover has an irregular shape. Early truck 12-bolts had axles with 12 large axle splines. The differential carriers are also narrower than those in passenger-car units. They are not interchangeable.