Your Price: $6,760.81

Suggested Retail:  $7328.79


Product Details

Less weight and the same great horsepower are the benefits of a Chevrolet Performance Aluminum Race Block. Chevrolet Performance Aluminum Race Blocks provide the same competition level strength and reliability of our cast-iron Race Blocks, but their lighter weight improves chassis dynamics. The super-tough A-356 aluminum competition blocks are CNC-machined to +/- 0.001-inch tolerances. Chevrolet Performance Aluminum Race Blocks are ideal for road racing applications or high horsepower turbocharged engines.

Chevrolet Performance Aluminum Race Block Technical Notes:
• Extra-thick deck surfaces with blind-tapped head bolt holes for improved head gasket sealing
• Centrifugally spun cast-iron cylinder sleeves
• 2-piece rear-main crankshafts and pre-1986 oil pans required
• Enlarged cam bosses allow machining for larger cam bearings
• 2.000" O.D. (1.867" I.D.) cam bearings P/N 12370843 required
• Blocks may require clearancing at top of lifter bores (0.842") for some roller lifters
• Timing system clearance should be checked before engine assembly
• Extra-thick main bearing bulkhead machined at 5°
• Premium main studs and steel main bearing caps
• Priority main oiling system
• Billet wet sump rear main cap can be converted to dry sump with plugs
• Oil dipstick holes not drilled
• Comes with dowel pins

400 Aluminum Bare Block
• A-356 aluminum competition block
• CNC-machined
• Siamesed bores with increased wall thickness
• 4.117" rough-finished bore
• 4.135" maximum bore
• 3.750" maximum stroke
• Splayed 4-bolt steel mains
• 400 main size
• Dry sump use only
• Tested to more than 800 horsepower!

Part Number: 10134400
Casting Number: 10134398
Deck Height: 9.025"
Lifter Pattern: Standard
Cylinder Wall: Siamese
Bore Range: 4.117" - 4.135"
Main Bolt: 4
Main Bolt Degree: 20°
Cap Material: Steel
Crank Journal Size: 400
Oiling: Dry
Seal Type: 2 Piece
Max Stroke: 3.750"
Weight (lbs): 89
Max HP: 800
Usage: Pro

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