Your BluePrint engine was dyno tested with the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet. Part Number: BPF4089CT Fuel Delivery Type: Carbureted, 750cfm ** Not included** Spark Plug: BPP7938 NGK 7938 BKR5E (.750 inch reach, 14mm thread, 5/8 hex, plug) Spark Plug Gap: .035″ Harmonic Balancer: BPP28 – 28.4 Ounce, 6.4″ Diameter Flexplate/Flywheel: 28.4 Ounce Weighted Stall Converter: 2000-2400 rpm Intake Manifold: Dual plane, satin aluminum Fuel Recommendation: 91 Octane Timing (Initial/Total Advance): Initial timing – 10-16° and Total timing 32-34° Firing Order: 1,3,7,2,6,5,4,8 Recommended Break in Oil : BPP710 (Click Here) Recommended Service Oil : BPP10W30 (Click Here)  Recommended Oil Filter ; BPP51515 (Click Here) Total Oil capacity with production oil pan, and Correct BPP51515 Filter : 5 Quarts Header Partners:  Click here for our Header Partners and recommendations. Click here to download a copy of the Installation Guide that came with your BluePrint engine.