What Makes the 9-inch Ford Rearend So Great?

From the archives: Legendary tech guru Marlan Davis explains why the 9-inch Ford is the strongest rearend out there—it’s all due to “hypoid distance.”
On this episode of Engine Masters presented by AMSOIL, we explore an ancient scenario but still one of the most-asked tech questions we are asked: What budget bolt-ons can be used on a stock small-block Chevy 5.7 to get more horsepower? Watch as we take the cheapest Chevy 350 crate engine you can buy and make mods that gain nearly 130 horsepower! It’s a dyno-proven, easy-to-install power combo that will give you the best bang for your buck.

Secrets of the Ford 9-Inch Rear Axle - The Technical Forum - The Autosport Forums

Moser Engineering Shows Steps To Effectively Narrow A Rearend

Ford Inch 3rd Member 9 Third Member Race Only Strange Pro, 60% OFF

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Video: Currie Enterprises Installs 9-inch Into Tri-5 Chevy - Street Muscle

What Makes the 9-inch Ford Rearend So Great?

JEGS 555-60686: Ford 9 Inch Posi Traction Third Member Assembly, 4:11 Ratio, 31-Spline, 1310 Series Yoke - 3 7/32 in. W x 4 1/4 in. L, 1 1/16 in. U-Joint Cap, Nodular Iron Housing, 8620H Steel Gears

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What Makes The Ford 9-Inch Rear Axle So Strong? - Holley Motor Life

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Speedmaster Ford 9-inch Housing & Axle Combo

Why The Ford 9 Inch Is Great And Why You May Not Want To Use One In Your Car. Pinion Height Matters