Lingenfelder Performance Engineering

Question .. when you’re faced with a decision to stay with your tired LT1 or do a LS1 swap?  Which do you do ? Do you want to keep the car original and juice up the motor?

I faced the same question — If you’re thinking that at some point in time, over the next x number of years, the C4s will finally come into their own as I did – I turned to Lingenfelter Performance Engineering’s (LPE) shop in Decatur, Indiana, for one of its 383ci LT1 440hp engine upgrade kits, capable of 1/4 mile times of 12.2/116mph (street tires). Keep in mind that the C5 Z06 LS1 was rated 405/400.

Engine Modifications:

  • Engine removal, inspection and disassembly
  • JE 2618 alloy forged aluminum pistons – 10.8:1
  • Callies 4340 forged steel crankshaft – 3.750″ stroke
  • Oliver 4340 billet steel I-Beam connecting rods – 5.850″ length
  • Total Seal file fit rings, heavy duty rod & main bearings
  • Computer balanced rotating assembly
  • Lingenfelter CNC ported & polished LT1 or LT4 cylinder heads
  • Stainless steel 2.00″ intake valves
  • Stainless steel 1.56″ exhaust valves
  • Lingenfelter double valve springs, titanium retainers, 10 degree locks & seals
  • Three angle valve job, checking of spring tensions and heights
  • Lingenfelter designed Competition Cams hydraulic roller camshaft
  • Ported and polished LT1 intake manifold
  • Competition Cams High Tech stainless steel full roller rocker arms – 1.6:1 ratio
  • 58 mm aluminum throttle body
  • LPE engraved throttle body cover
  • Professional installation, testing and tuning
  • Stainless steel exhaust by Corsa
  • Lingenfelter modified air box lid and K&N air filter
  • Chassis dyno testing after installation
  • LPE’s 2 year / 24,000 mile warranty

Additional Modifications:

  • Ceramic-Coated Shorty Headers
  • Ron Davis Heavy-duty Radiator
  • New Hoses & Belts
  • Performance Cats
  • MSD Vented Opti
  • MSD Conductive Plug Wires
  • AC-Delco Platinum Plugs (41-906)
  • Replacement AC-Delco ICM
  • Flow Kooler High Flow Water Plump
  • ZF6 Trans – Short Throw Shifter
  • Brakes, drilled & Slotted Rotors
  • Modified LPE ECM High Performance PROM Tune

DYNO RESULTS – (April 2024)

Photos

VIDEO – Dyno Tested

Port of Nice, France 2022