If you’re diving into the world of performance engines, you’ve probably heard of the Eagle Competition Rotating Assembly. This isn't just some off-the-shelf kit; it's a thoughtfully crafted solution that pairs perfectly with Eagle's "ESP" H-Beam Connecting Rods, a rock-solid 4340 Steel Crankshaft, and top-notch forged pistons from brands like Arias, JE, and SRP. If you're pushing your engine to the limits, this assembly is designed to keep up with the most demanding applications.

Now, if you're not looking to break the bank but still want a solid performance boost for engines under 500 hp, the Eagle Street Performance Assemblies are worth a look. They strike a nice balance between performance and reliability without emptying your wallet. Each kit comes with a cast steel crankshaft, "SIR" I-beam connecting rods, and your choice of forged or hypereutectic pistons. Plus, you get plasma-moly rings and Clevite77 bearings, which are pretty much the gold standard for durability.

For those who want a bit more muscle on the street, the Eagle Pro Street Assemblies are designed for those who crave that forged 430 steel crank. This kit includes a beefy 4340 steel crankshaft, "SIR" I-beam connecting rods, and the same quality piston options—either forged or hypereutectic—along with plasma-moly rings and Clevite77 bearings. It's all about delivering a reliable performance without the hefty price tag.

If you’re really serious about horsepower, the Eagle Competition Assemblies are where it’s at. With a 4340 steel crankshaft and H-beam rods that can take a beating, you know you’re in good hands. The premium forged pistons are made specifically for forced induction engines, which is a game changer if you’re looking to crank up the boost. And let’s not forget the plasma-moly rings and Clevite77 "H" series bearings—they're designed for internal balance and can handle extreme horsepower without flinching. Standard bore is 4.000", so you know it’s ready for action.

Features:
• Pro Street assembly
• Displacement: 408
• Pistons: KB
• Dome volume: -27.5CC
• 4.000" Forged 4340 Steel Crank
• 6.200" 4340 I-Beam Rods
• 7/16" ARP 8740 Bolts
• Hypereutectic KB-27.5cc Inverted Dome 4.030" Pistons
• Plasma-Moly File-Fit Rings
• King XP Rod/Main Bearings

Fitment:
• Ford Bronco 1979-1996
• Ford Mustang 1968-1970
• Ford Thunderbird 1977-1979
• Ford Torino 1970-1976

Note:
• Assembly must be balanced by a qualified machine shop before use!

This assembly fits a variety of classic Fords, including the Bronco from '80 to '96, the Mustang from '68 to '70, and the Torino from '70 to '76. Just make sure you get it balanced properly, and you’ll be ready to unleash some serious power.