Aeroflow AF96-1001 Cast S/B Chev Engine Block 4.125" Bore 9.025" Deck 4 Bolt Cap

Aeroflow

Cast Iron S/B Chev Engine Block, 4.125" Bore

9.025" Deck Height, 400 Mains, 4-Bolt Billet Splayed Caps

AF96-1001

SOLD AS EACH

Aeroflow Performance engine blocks are the ideal starting point for any street performance build that demands quality and precision at a reasonable price. Why start your engine build with a worn-out production block from decades ago that needs hours of machine work. When you can start with a new heavy-duty cast iron engine block that is a semi-finished bare engine block that requires very little machining to match your internal components. These brand-new aftermarket engine blocks are cast from premium high-strength Class 32B iron. It features Siamese cylinder bores and splayed billet steel four-bolt main caps with priority main oiling system which direct oil straight to the main bearings. The extra thick standard deck height ensures a reliable head gasket seal as well as allowing the use of off the shelf standard components such as camshaft, timing chain, oil pump/pan and oil filter etc. You can rest assured that these Aeroflow engine blocks have a great foundation for your next engine build.

Specifications

• Cylinder Bore Diameter: 4.125"
• Max Bore & Stroke: 4.185" x 4.000"
• Cam Journal OD: STD, 1.869"
• Cam Plug: 2.375" Press In Cup
• Cam Location: STD
• Cylinder Wall Thickness: .275". min @ 4.185" Bore
• Deck Height: 9.025"
• Deck Thickness: .675" Min
• Fuel Pump: STD Mechanical Provision
• Fuel Pump Pushrod: STD
• Freeze Plugs: 10 x 1-5/8" Press In Cup
• Lifter Bores: .842"
• Main Bearing Size: 2.650" (400)
• Main Bearing Bore: 2.849" (400)
• Main Cap Bolts: 7/16" & 3/8" on Caps 1 & 5, 7/16" Splayed on Caps 2, 3 & 4
• Main Caps: Billet Steel, 3 Center Caps Splayed
• Main Cap Register: Deep Stepped Register (no need for dowels)
• Oil System: Main Priority Oiling (can use dry sump)
• Oil Pump Shaft: 350 .481" Standard
• Oil Filter: STD, Uses 2-Bolt Adapter
• Oil Pan: STD 350
• Rear Main Seal: STD 400 2-Piece
• Serial No. Location: Left Front & Main Caps
• Starter: STD
• Stud Holes, Head: Blind Holes
• Timing Chain / Gears: STD
• Timing Cover: STD
• Torque Specs: 7/16" Bolts 65 ft. lbs., 3/8" Bolts - 35 ft. lbs.
• Weight: 92kg (205 lbs.)

Suggested Components

• Cam Bearings: Dart 32210020
• Main Bearings: Clevite MS1038P STD
• Rear Main Seal: Fel-Pro 2909
• Lifters: Melling's JB-817
• Welsh Plugs: Aeroflow AF3000-1002
• Timing Chain: Rollmaster CS1000 or JP 5981
• Timing Cover: Aeroflow AF1828-2000 or AF1827-2000
• Oil Filter Adapter: Aeroflow AF64-2185BLK
• Oil Pan: Aeroflow AF82-9005, AF82-9005BLK or AF82-9005C
• Oil Pan Gasket: Moroso 93150
• Oil Pump Drive shaft: Aeroflow AF37-2385
• Oil Pump: Melling M-55 or M-55HV
• Fuel Pump: Aeroflow AF49-1300
• Fuel Pump Push Rod: Aeroflow AF37-2495
• Starter Motor: Aeroflow AF4250-5323
• Engine Mounts: Aeroflow AF1200-1000
• Cylinder Head Bolts: Aeroflow AF37-2100
• Cylinder Head Studs: Aeroflow AF37-2000

Important Information

• Sizes in reference to Deck Height, Cylinder Bore, Wall Thickness, etc, listed in these instructions are Nominal. This Block must be professionally finish machined.
• Due to a vast difference of opinion among professional builders regarding specifications and procedures, all blocks, when purchased bare, are finished within factory +/- tolerances. Tighter than factory or OE specs when applicable.
• Cam bearing OD should be de-burred before installation.
• When initially removing main caps, the caps & block should be de-burred before reinstalling; this will insure that correct main size is maintained.
• This Block should be assembled by experienced, professional engine builders. Many parameters such as Cylinder Bores will need additional, professional machine work.
• Many pistons are oversized, and cylinder bore must be honed to correct skirt clearance. Very few aftermarket components are drop ins to any engine block, without additional checking/machining.