Garage Sale

GM LS3 Stage 1 - Core Exchange

$1,399.95

! WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov

GM LS3 Porting Service

  • Reuse Factory Intake Valves: 2.165″
  • Reuse Factory Exhaust Valves: 1.590″
  • Intake Volume: 288cc
  • Exhaust Volume: 93cc
  • Intake Peak Flow: 390
  • Exhaust Peak Flow: 260
  • Seats: Stock Iron
  • Guides: Stock Powdered Metal
  • Minimum Bore: 4.000″
  • Intake Manifold Recommendation: FED Billet Low Pro
  • Stock Rockers or Jesel. Smith Brothers Trunnion Upgrade Kit Recommended
  • Springs: FED .660″ Dual LSX Spring Kit with Titanium Retainers

GM LS3 Porting Service

From a heads cam LS build to a moderate power adder street car.  Our Stage 1 GM square port porting services are EXACTLY what your ride needs to put the power to the ground.  Contact us now if you have any questions!

Tech Specs: GM LS3 – Stage 1

  • Reuse Factory Intake Valves: 2.165″
  • Reuse Factory Exhaust Valves: 1.590″
  • Intake Volume: 288cc
  • Exhaust Volume: 93cc
  • Intake Peak Flow: 390
  • Exhaust Peak Flow: 260
  • Seats: Stock Iron
  • Guides: Stock Powdered Metal
  • Minimum Bore: 4.000″
  • Intake Manifold Recommendation: FED Billet Low Pro
  • Stock Rockers or Jesel. Smith Brothers Trunnion Upgrade Kit Recommended
  • Springs: FED .660″ Dual LSX Spring Kit with Titanium Retainers

Also Includes:

  • Teardown
  • Wash
  • CNC Port
  • CNC Valve Job
  • FED Logo
  • Hand Blend
  • Surface 0.010″
  • Final wash and assembly
  • Pressure Test

Lead Times:

  • Core Provided: 7-12 business days from the time your head gets to our facility. You can drop off your heads or ship them to us. This form may be printed and shipped or emailed to sales@frankensteined.net. Frankenstein Engine Dynamics will not accept, nor work on any cylinder heads or manifolds without this form.
  • Core Not Provided: Same day shipping is determined by availability. If not in stock, lead time is typically 7-12 business days, though you will receive a call with a more accurate lead time on the next business day after purchase.
  • Core Exchange: You buy a “core not provided” head. As soon as we receive your heads in return, you will receive a refund on the difference. (If you Paid Cash – you will receive a check. If you Paid CC – we will process immediately and you will receive your refund within 3-5 business days due to processing.)
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