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: BP3505CTF Fuel Delivery Type: Fuel Injected Spark Plug: BPP7938 NGK 7938 BKR5E (.750 inch reach, 14mm thread, 5/8 hex, plug) Spark Plug Gap: .035″ Harmonic Balancer: Not included, recommend BPP350 – Non Weighted, 8″ diameter Flexplate/Flywheel: Not included, recommend Late 350 Weighted BPP871006 Stall Converter: 2000-2400 rpm Intake Manifold:  Dual plane, aluminum  BPP350VINT Fuel Recommendation: 91 Octane Timing (Initial/Total Advance): Initial timing – 10-16° and Total timing 32° Firing Order: 1,8,4,3,6,5,7,2 Recommended Break in Oil : BPP710 (Click Here) Recommended Service Oil : BPP10W30 (Click Here)  Recommended Oil Filter ; BPP51061 (Click Here) Total Oil capacity with production oil pan, and Correct BPP51061 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.