Bloque de motor de hierro desnudo de 4 pernos con cigüeñal principal de palanquilla para Chevy SBC 350 B-4.125 M-350 DH-9.025

Si su bloque Bowtie estándar pudiera soportar más de 1500 HP, sería el bloque de motor H1 de Speedmaster. Diseñado desde cero, basado en su bloque Bowtie favorito, con capacidad para aplicaciones de aspiración natural, sobrealimentación, turboalimentación y óxido nitroso.

Brand:	Speedmaster
Part Number:	1-286-002-01
Part Type:	Engines, Bare Block
Cylinder Bore Diameter:	4.125 in.
Bore & Stroke:	4.185 in. x 4.000 in. Max Recommended
Cam Journal OD:	Standard SBC - 1.869
Cam Plug:	2.375 in. Dia. Cup Plug
Cylinder Wall Thickness:	0.275 in. min @ 4.185 in. Bore
Deck Height:	9.025 in.
Deck Thickness:	0.675 in. Min
Fuel Pump :	Standard Mechanical Provision
Fuel Pump Pushrod:	Standard Length
Freeze Plugs:	10 x 1-5/8 in. Press In Cup Plugs
Lifter Bores:	SBC 0.8427-0.8437 in.
Main Bearing Size:	2.450 in. (SBC 350)
Main Bearing Bore:	2.649 in. (SBC 350)
Main Cap Bolts:	#1 7/16 in. (2) 3/8 in. (2) #2, 3, 4 7/16 (2) Splayed (2) #5 7/16 in. (2) 3/8 in. (2)
Main Cap Press:	0.005 in.
Main Caps:	All 5 Billet Steel. 3 Center Caps Splayed
Main Cap Register:	Deep Stepped Register (No Need for Dowels)
Oil System:	Wet Sump - Main Priority Oiling (Can Use Dry Sump)
Oil Pump Shaft:	350 0.481 in. OD - Standard
Oil Filter:	SBC, Uses 2 Bolt Adapter
Oil Pan:	Standard 350 SBC
Rear Main Seal:	Standard 350 SBC
Serial No. Location:	Laft Front & Main Caps
Starter:	Standard SBC
Stud Holes, Head:	Blind Holes
Timing Chain/Gears:	Standard SBC Components
Timing Cover:	Standard Cam Location SBC
Torque Specs:	1 - 5 7/16 in. Bolts 65 ft. lbs. 1 & 5 3/8 in. Bolts - 35 ft. lbs.
Weight:	205 Lbs @ 4.0 in. Bore
Quantity:	Sold individually.
Notes:	Cam Bearings not Included, Replaces Dart 31131211

The Speedmaster H1 is the perfect starting point for a powerful and reliable engine build suited for the street or race track. Precision pre-machining is the perfect starting point for a powerful and reliable engine eliminating time and expense of blueprinting a stock block or ''semi-finished'' factory casting. Best of all can be used with standard off the shelf small block components.

Speedmaster H1 Chevy SBC bare blocks feature: 
 

• Cast from premium high-strength Class 32B iron
• Standard deck height allows the use of off the shelf parts
• Uses standard small block Camshaft, Timing Chain, Oil pump, Oil filter, Motor Mounts.
• Priority main oiling system directs oil to main bearings
• Blind tapped head bolt holes prevent water leaks
• Extra thick decks ensure reliable head gasket seal
• Billet steel 4-bolt main caps (splayed for extra strength)
• Front and rear external oil feed, crossover and restrictor provision
• Simplified plumbing for external pumps
• Used in 1500+HP Applications