Ultima 298-274 El Bruto 127ci Evolution-Style Engine Polished Finish

Demon’s Part # 101695 Mfg. Part # 298-274


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El Bruto 127ci Evolution-Style Engine Polished Finish

Ultima has put together their first high output engine package for the most demanding performance enthusiast. The El Bruto Series 127ci 4.25" bore engine is factory assembled in the USA and features heavy-duty C355 casting and dynamic balanced press pin crankshafts. Features a large bore breather for increased crankcase vacuum and less blow-by, ' alignment dowels for true line bore, prime C355-T6 aluminum casing, one-piece heat-treated 4140 steel flywheel, and machined fins for an excellent cosmetic appearance. Twin cam styling means 30% more fin than most Evolution style heads for cooler running.

It comes complete with carburetor, ignition MSO, and warranty.

El Bruto 127ci Evolution-Style Engine Polished Finish features:

  • 4.25" bore
  • 4.5" stroke
  • Mahle forged pistons
  • 10.2:1 compression ratio
  • 140RW HP rated power
  • 145 lb/ft torque
  • Chrome nose cone/rocker boxes
  • Billet oil pump/tappet blocks
  • Ultima R1 carburetor
  • All fins are machined for excellent cosmetic appearance
  • Twin cam styling
  • 30% more fin than most Evo style heads for cooler running
  • Camshaft: 264 duration: .625" Lift
  • Pushrods: Ultima
  • Valve spring: Ultima
  • 2.100 stainless int valves, 1.700 stainless ex valves
  • Manganese bronze guides
  • High silicon wire valve spring w/ chromoly retainer