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Cylinder Heads > BMP SMALL BLOCK CHEVY ALUMINUM HEADS > BMP SBC 23° Vortec-Style Aluminum Heads
BMP SBC 23° Vortec-Style Aluminum Heads
BMP SMALL BLOCK CHEVY ALUMINUM HEADS

ALL BMP CYLINDER HEADS ARE PRICED INDIVIDUALLY

Bill Mitchell Products has taken the Chevrolet’s Vortec-style cylinder head design to the next level with these superior-performing 23° BMP SBC Aluminum heads. Originally known as the Motown from World Products, these Heads combine high-flow ports with generous 2.080” diameter Manley stainless steel intake valves and you can see where the extra power comes from.

They’re available bare, or in three different assemblies that are designed to match your camshaft’s valve spring requirements. A multi-angle valve job and Manley stainless steel valves make the assemblies an excellent value and a real time-saver for engine builders.

PLEASE NOTE: These heads feature straight Vortec style Intake Manifold mounting holes in addition to the conventional sbc intake bolt pattern.

BMP Now Offers Heads in

Unassembled Kit Form !!


Any of the assembled heads below are now available in kit form. They are discounted $50.00 per head from the assembled pricing. If you intend to modify your heads in any way, or if your engine builder will disassemble your heads anyway, or you are perfectly capable of assembling heads yourself, this is the most economical way of purchasing your heads !! Just scroll down to the product list below and look for your desired part number and click the option box for your kit pricing !!!


TECHNICAL SPECS

Casting ID Number: WOR-077B

Material: 355-T6 alloy high density aluminum
Valve Seats: Intake (hardened), exhaust (hardened)
Valve Guides: Manganese bronze
Spring Seats: Machined for 1.560"
Valves: Manley stainless steel valves in assemblies
Valve Diameter: 2.080" intake, 1.600" exhaust (11/32" stem)
Guide Plates: BMP 702351-8
Rocker Arm Studs: Screw-in style
Rocker Arms: .150 ratio (use of 1.6 ratio may require elongation of pushrod holes)
Intake Runner: 215cc, standard port location
Exhaust Ports: 70cc, standard location
Combustion Chamber: 64cc, straight plug orientation, Vortec style chamber.
Spark Plug: 14mm .750" reach gasket style. Accel 416 or equivalent
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised w/ perimeter and center bolt pattern
Valve Angle: Stock 23°
Accessory Bolt Holes: Stock

024015 BMP 215cc Aluminum Head Flow Data

Valve Lift--.300 --.400 --.500 --.600 --.700 --.800
2.080 ------- 180 -- 227 -- 263 -- 279 -- 268 -- 268
1.600 ------- 141 -- 162 -- 177 -- 186 -- 194 -- 197

Methods used: Superflow 600, Flowed at 28" with a bowl blend 1" down, 1" radiused entry plate on the intake port, No exhaust tube, Using Manley RaceMaster valves.


MOTOWN 23 DEGREE ALUMINUM VORTEC
HEAD ASSEMBLY BUYING GUIDE

Use this guide to match your Cam Spring Specs to our Assembled Heads & choose which assembly you need from the choices below. Please Note: Bare Heads contain no Valves.

-1 Assembled Heads: Hydraulic Flat Tappet Cam
1.250": 100 lbs. @ 1.810", 300 lbs. @ 1.250", coil bind @ 1.200"
MAX LIFT @ .570"


-2 Assembled Heads: Mech. Flat Tappet or Hydraulic Roller Cam
1.437": 125 lbs. @ 1.850", 340 lbs. @ 1.210", coil bind @ 1.160
MAX LIFT
@ .600"


-3 Assembled Heads: Solid Roller Cam
1.550": 200 lbs. @ 1.900", 480 lbs. @ 1.200", coil bind @ 1.150", max lift
MAX LIFT @ .700"

BMP SBC 23° Vortec-Style Aluminum Heads
BMP SBC 23° Vortec-Style Aluminum Heads BMP SBC 23° Vortec-Style Aluminum Heads BMP SBC 23° Vortec-Style Aluminum Heads
 
 
product variations
 
024015 BMP SBC Vortec style Aluminum Head
215cc Intake, 64cc Vortec Style chamber
Straight plug
One bare cylinder head
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$354.72
Quantity 
 
 
 
24015-1 BMP SBC Assembled Aluminum Vortec style Head
215cc Intake, 64cc vortec chamber, straight plug
For hydraulic flat tappet cams, w/ 1.250" spring assy.
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" butto
Option
$511.37
Quantity 
 
 
 
24015-2 BMP SBC Assembled Aluminum Vortec style Head
215cc Intake, 64cc vortec chamber, straight plug
For mech. flat tappet and hyd. roller cams, w/ 1.437" spring assy.
TO PURCHASE: Please "click" the small box to the right of the "BU
Option
$531.82
Quantity 
 
 
 
24015-3 BMP SBC Assembled Aluminum Vortec style Head
215cc Intake, 64cc vortec chamber, straight plug
For solid roller cams, w/ 1.550" spring assy.
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
Option
$613.64
Quantity 
 
 
related products
 
070900BMP SBC Small Block Chevy, Polished Aluminum, CNC Painted BMP Logo, (One Pair)
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$225.00

Quantity