Brand:
Flotek
Manufacturer's Part Number:
Part Type:
Cylinder Heads
Product Line:
FLOTEK Jailbird 390cc CNC Big Block Chevy Cylinder Heads
UPC:
850134007747
Combustion Chamber Volume (cc):
133
Intake Runner Volume (cc):
390cc
Exhaust Runner Volume (cc):
135cc
Cylinder Head Style:
Bare
Cylinder Head Material:
Cast aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.375 in.
CNC-Machined Combustion Chamber:
Yes
CNC-Machined Intake Runner:
Yes
CNC-Machined Exhaust Runner:
Yes
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
Oval
Exhaust Port Location:
Raised
Spark Plug Style:
Angle
Intake Valves Included:
No
Exhaust Valves Included:
No
Exhaust Valve Diameter (in.):
1.850 in.
Valve Springs Included:
No
Damper Spring Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Rocker Arm Studs Included:
No
Rocker Arm Nut Thread Size:
7/16 in.-20
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
5/16 in.
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
24/4
Exhaust Valve Angle:
15/4
Valve Guides Included:
Yes
Valve Guide Material:
Manganese bronze
Valve Seats Machined:
Yes
Valve Seat Machine Style:
6-angle
Valve Seat Material:
Powdered metal
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Remanufactured:
No
Quantity:
Sold individually.
FLOTEK Jailbird 390cc CNC Big Block Chevy Cylinder Heads
FLOTEK introduces the Jailbird 390cc CNC big block Chevy cylinder heads. With CNC porting to offer superior performance, the Jailbird 390 will deliver for larger cubic inch engines of 565-640, allowing aggressive cam profiles to make maximum power. Touting an impressive 467 cfm at .900 lift with professional bowl blending and a competition 6-angle valve job to release its full potential, this is the right head for you!
Also offered as CNC without bowl blending, the Jailbird 390 produces 436 cfm at .700 lift with 4.625 in. bore fixture and 426 cfm on 4.50 in. bore fixture. Either way, you can't go wrong with the FLOTEK Jailbird 390—a perfect choice for Power Header, Nitrous Super Charge, Jacks, and Boosts. Models are available assembled or bare for a variety of engine applications.
NOTE: This item is not sold as a pair; this is a single cylinder head.
