409 Chevy Aluminum

BMP 409 Chevy Aluminum Block
The first new W-Block since the Sixties! Limited Production has been underway & we are shipping them in the same order as the orders are placed.  So if you have not ordered one, you had better order one NOW! Future production runs will be produced in limited numbers. Developed in concert with the late great Lamar Walden. It is basically a standard BMP Big Block Chevy with a few differences. It accepts the following parts to assemble it…
1. BBC crankshaft up to a 4.250″
2. BBC harmonic balancer
3. BBC connecting rods
4. 409 pistons
5. BBC timing chain and cover
6. CUSTOM: BBC camshaft W/ 409 lobe positions cut for 45 degree lifter angles
7. 409 Lifters but a Chevy LS roller lifter allows for more lift
8. BBC starter
9. BBC oil pan
10. 409 style water pump
11. 409 pulleys and brackets with the exception of needing a BBC bottom crank pulley (Lamar Walden Automotive has a complete serpentine belt set up if needed )
 
TECHNICAL INFORMATION:

Deck Height: 9.600 Std
Bore Size: 4.240
Max Bore Size: 4.530
Cylinder Bore Spacing: 4.84″(stock)
Crankshaft: Standard BBC
Rods: Standard
Pistons: 409
Cam: 409 special w/BBC cam bearing journals
Cam Location: Standard BBC Lifter
Location: Standard
Lifters: 409 Lifters, LS lifters allow for more travel
Lifter Angles: Int.45°/ Ex.45°
Timing Chain: Standard BBC
Oil Pan: Standard BBC
Oil Pump: Standard
BBC Oil Pump Drive: Standard BBC
Timing Chain Cover: Standard BBC
Water Pump: Standard 409
Cylinder Heads: Standard 409
Head Studs: ARP 135-4002
Intake Manifold: Standard 409
Distributor: Standard BBC w/.300 spacer under the collar 
Cam Bearings: Durabond CHP12
Oil Restrictors: BMP 701802-2
Dowel Pin Kit: BMP 701582-K
Rear Seal: FEL2904
MORE INFORMATION:
BMP 409 Instruction Sheet  PDF – Adobe Reader Required

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