LS7 World Products 6 bolt heads CNC'd by Kuntz&Co. with Jesel Y2K
02-12-2012, 01:18 AM
#1
LS7 World Products 6 bolt heads CNC'd by Kuntz&Co. with Jesel Y2K Category: Accessories
Price: $2850
Location (State): MO
Item Condition: Used
LS Engine?: Fits LS Engine
Can be used on any 6 bolt (RHS, LSX, Warhawk) or 4 bolt block arrangment with 4.125" bores (might work with a 4.100").
Copy and Paste link to read more about the original versions.
http://www.worldcastings.com/product...num-heads.html
From World Products website.
WARHAWK 12° LS7 Aluminum Heads
For maximum performance from an LS-series engine, World's Warhawk 12 Degree Heads are the answer. Using superior Port design featuring 285cc Intake & 106cc exhaust runners that flow incredible numbers.
If even more flow is desired World offers a CNC Ported version that boast 296cc Intake & 110cc Exhaust runners. They are Dyno proven to crank out the power!
An important feature of the Warhawk 12 Degree head is that it comes with TWO EXTRA BOLT HOLES per cylinder (same as Warhawk LS7X Blocks) to provided extra sealing for power adder-boosted high combustion pressure applications.
TECHNICAL SPECS
Casting ID Number: WOR-076A | WOR-076B
Material: 355-T6 alloy high density aluminum
Valve Seats: Intake (hardened), exhaust (hardened)
Valve Guides: Manganese bronze
Spring Seats: Machined for 1.560" (can be machined for 1.625")
Valves: Manley stainless steel valves in assemblies
Valve Diameter: 2.200" intake, 1.600" exhaust (5/16" stem) as cast, 2.200" intake, 1.600" exhaust (5/16" stem) CNC ported
Rocker Arms: Stock LS7 rockers and integral stands
Intake Runner: 285cc, standard port location
Exhaust Ports: 106cc, standard location
Combustion Chamber: 64cc or 72cc
Spark Plug: 14mm .750" reach gasket style, Accel P526S or equivalent
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised .A34600" for aftermarket valvetrain
Valve Angle: Stock 12°
Accessory Bolt Holes: Stock
HEAD FLOW@ .700 LIFT
336 intake, 193 exhaust (Super Flow 1050)
343 intake, 219 exhaust (Super Flow 600)
CNC Ported Head @ .800 Lift
386 intake, 265 exhaust (Super Flow 1050)
409 intake, 281 exhaust (Super Flow 600)
All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.
*Flow number peaks
- 409 cfm on the intake @ .800" valve lift and 281 cfm on the exhaust @ .800" valve lift (easily supports 850HP NA)
- 66cc chambers
- Manley Nextek 1.625" roller valve springs. 280# seat pressure. Currently set up for solid roller.
- can be switched over to hydraulic roller
- 1.950" installed height
- Titanium retainers
- 6 bolt for World Products Warhawk or LSX/RHS patterns
- Kuntz & Co. CNC program and hand finish
- Jesel Y2K Pro Series shaft rockers (complete) cost 2000.00 alone. p/n KPS 2092-126
- heads have been set up to run the Jesel system and cannot use stock LS7 rockers anymore
- minimum bore is 4.125" (LS7 bore), some consider this 'large' bore when shopping LS7 style heads.
These cylinder heads made 802 NA HP on this 454 12:1 engine with a smallish cam and restricted carb style intake.
Dyno time only on heads and rockers. Engine was never installed into anything, it is apart now and being converted to a MOZEZ head set up and twin TB's for All Motor racing
Copy and Paste Link:
http://www.streetfire.net/video/lsxt...-en_692669.htm
Jim Kuntz is huge in the Ford world and owns several NA heads up category class records. Google him or go to his website. Very knowledgable man when it comes to air flow. These heads have been CNC'd and hand finished by him. Custom valve job over what the heads from World Products come with. They are a one off set.
Cleaned, freshened and inspected.
Heads are currently being shipped back from Kuntz & Co. with freshened valve job for improved flow. 400+cfm heads.
Ready to go!
Serious only.
SOLD
Last edited by helicoil; 05-08-2012 at 01:42 PM.
