Whether drag racing in NHRA Pro Stock, road racing in IMSA, or fielding four NASCAR Sprint Cup machines, Jack Roush has always been loyal to the Blue Oval. It takes a real Ford guy to appreciate the FE big-block, and Roush offers a killer 511ci variant of the often-overlooked family of Ford motors through his aftermarket parts division. The 511 has all the right stuff, including a Shelby aluminum block, Scat cast crank, and forged rods and pistons. The cylinder heads and dual-plane intake manifold are from Edelbrock, and a Holley 750-cfm carb supplies fuel. There isn’t much else you need to buy after ordering the 511, as it includes a road-race oil pan, carb, MSD distributor, alternator, water pump, and breathers. Roush even backs up their 600hp mill with a two-year, 24,000-mile warranty.
Bore/stroke: 4.375 x 4.250 inches
Compression ratio: 10.0:1
Camshaft: hydraulic roller (specs classified)
Output: 600 hp and 625 lb-ft
Let’s say you’ve just blown up your small-block Ford, but you want to reuse your current top end assembly. Dart’s 427ci turnkey short-blocks are the perfect solution. Taking advantage of the 351W’s generous architecture, the combo starts off as a Dart SHP block that’s been opened up to 4.125 inches, and fitted with an internally balanced and forged rotating assembly. You’ll have to come up with your own induction package, water pump, camshaft, oil pan, and ignition system, but most of that can be swapped over from your old motor. Dart reports that when fitting its 427 short-block with a set of Pro 1 heads, a single-plane intake, a 750-cfm carb, and a 236-at-.050 hydraulic roller cam, the setup puts out 550 hp.
Bore/stroke: 4.125 x 4.000 inches
Output: 550 hp and 545 lb-ft
Call it heresy if you wish, but from a numbers perspective, the Mopar Performance Gen III 426 Chrysler Hemi crate motor sacrifices nothing to its hallowed Gen II forbearer. That’s because it packs just as many cubes, even more power, and all in a lighter weight design. The Gen III combo utilizes a siamesed-bore aluminum block as its foundation, which is stuffed with an all-forged rotating assembly. Combined with high-flow aluminum heads and a healthy hydraulic roller cam, the product is 540 hp and 530 lb-ft of torque. The Gen III 426 Hemi crate arrives at your doorstep fully dressed with an oil pan, intake manifold, water pump, coil packs, and a balancer. The necessary wiring harness and computer are also available through Mopar Performance.
Bore/stroke: 4.000 x 4.125 inches
Compression ratio: 10.3:1
Output: 540 hp and 530 lb-ft
You’ve got to hand it to Ford. Instead of taking a breather following the success of the new DOHC 5.0L Coyote motor, Ford hopped it up even more to wring out another 32 hp. That brings the horsepower tally to 444 for the 2012 Boss 302 Mustang, and this same motor can be had through Ford Racing. The tricks applied to the 5.0-liter to create the Boss 302 mill are standard hot rodding tricks, but the results are impressive nonetheless. The primary changes include CNC-ported cylinder heads, a higher flowing intake manifold, and slightly larger camshafts. Moreover, the Boss 302 has been beefed up with a forged rotating assembly, and a bump in compression to 11.0:1. Motors ship complete from intake to oil pan, and include a water pump and balancer. Factory computers and wiring harness are sold separately through Ford Racing.
Bore/stroke: 3.623 x 3.653 inches
Compression ratio: 11.0:1
Camshaft: 221-at-.050 (intake); 224-at-.050 (exhaust)
Output: 444 hp and 380 lb-ft