Not many companies know how to get more horsepower out of a Ford V8 engine than Roush Performance. It’s been the case ever since founder Jack Roush was building hot Fords for the famous Gapp and Roush Pro Stock team back in the 1970s.

Roush uses its drag race, road course, and NASCAR engine experience to build its small block, FE, and 429/460 big block crate engines. All Roush crate engines are dyno-tested and guaranteed to make within 2 per cent of the advertised horsepower ratings.

Summit Racing carries 108 versions of Roush Performance crate engines in several series. All are fully assembled with intake, distributor, plug wires, air cleaner and valve covers, water pump, and alternator (most versions).

331 Series

Rated at 350bhp, these 331 cubic inch engines feature a seasoned 5-litre block, forged reciprocating assembly with H-beam rods, a hydraulic roller camshaft, and as-cast aluminium cylinder heads. Your choice of a four-barrel Holley carburettor or throttle body EFI. One year/12,000-mile limited warranty.

347 Series

Based on a new four-bolt iron block, these 347 cubic inch engines have a forged bottom end, hydraulic roller cams, and CNC-ported aluminium cylinder heads. Two year/24,000-mile warranty.

  • 347 SR: 410 horsepower/400 lbs.-ft. of torque, dual plane intake with Holley carburettor
  • 347 R: 450 horsepower/420 lbs.-ft. of torque, single plane intake with Holley carburettor
  • 347 IR: 465 horsepower/425 lbs.-ft. of torque, individual runner EFI

427 Series

These 351 Windsor-based engines are a big step up in the power department. They have all-forged bottom ends, hydraulic roller cams, and aluminium cylinder heads, and are covered by a two-year/24,000-mile limited warranty.

  • 427 SRX: 480bhp, as-cast heads, dual plane intake with Holley carburettor
  • 427 SRXE: same power and features as the SRX engine but with throttle body EFI
  • 427 SR: 510bhp, CNC-ported heads, and dual plane intake with Holley carburettor
  • 427 R: 550bhp, CNC-ported heads, single plane intake with Holley carburettor
  • 427 IR: 560bhp, CNC-ported heads, individual runner EFI

511 FE Series

These are some badass FE motors. The 511 cubic inch engines feature aluminium cross-bolted blocks, forged bottom ends, hydraulic roller cams, and CNC-ported aluminium cylinder heads. Two year/24,000-mile warranty.

  • 511 SR: 525bhp, dual plane intake with Holley carburettor
  • 511 R: 575bhp, single plane intake with Holley carburettor
  • 511 IR: 600bhp, individual runner EFI 

588 Series

These 588 cubic inch big blocks are based on Ford Racing A460 four-bolt iron blocks. They have forged bottom ends, hydraulic roller cams, and Ford Racing as-cast aluminium cylinder heads. Two year/24,000-mile warranty.

  • 588 SR: 540bhp, dual plane intake with Holley carburettor
  • 588 SRE: same power and features as the SR but with throttle body EFI
  • 588 R: 630bhp, single plane intake with Holley carburettor

Summit Racing also stocks Roush 5-litre Coyote crate engines, plus crate engines for specific applications like Factory Five, Superformance, and Backdraft Cobra replicas.

SEE ROUSH PERFORMANCE CRATE ENGINES AT SUMMIT RACING ENDS.