VPW Engine Block- BB Chevrolet, 4.275'' Bore, 9.800'' Iron Block

When building a Big Block Chevrolet performance engine, blocks from VPW offer strength,accuracy and peace
of mind that can't be assured in a rebuilt core.And, unlike so many of the used cores, nearly all of ours feature four-bolt main caps for
extra strength. Each cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications

Features:

• Deck Height : 9.800"
• Bore : 4.275"
• Main Bearing Size : Standard BBC
• Main Caps: All 4 bolt - Steel or Ductile Iron
• Weight: 4.250" bore = 280lb / 4.600" = 260lb
• Largest Recommended Bore: 4.625"
• Camshaft Bearing Diameter: Standard BBC
• Camshaft Position: Standard BBC
• Cylinder Wall Thickness, min: .300" @ 4.625" bore
• Deck Thickness, min : Adequate for all applications
• Torque Specs - Main Caps 1 - 5 1/2" bolts 100 ft lbs w/CMD #3
• 2 - 4 1/2" splayed 100 ft lbs w/CMD #3
• Dart’s inner head studs 3/8" – 7/16" stepped 50 ft lbs w/CMD #3
• Material:  Iron 
• Bore & stroke: 4.625" x 4.750" (max recommended)
• Cam bearing bore ID: 2.120" Std.
• Cam bearings: Coated, grooved, w/3 oil holes PN# 32210030
• Camshaft position: Standard 
• Cam Drive: Timing chain, Gear drive & Belt drive
• Cam Plug: Standard BBC 2.215"
• Cubic Inch: 632" (Max Recommended)
• Cylinder Wall Thickness: .300" min @ 4.625" bore
• Deck Height: 9.800"
• Deck Thickness: Adequate for all applications
• Dist. Tap Hole Valley: None
• Fuel Pump Boss: Mechanical pump provision
• Fuel Pump Pushrod: Std. BBC or +.200” for Raised cam/Big M² - P/N: PR200FP
• Freeze Plugs: Std. Press in cup plugs 1 5/8 “dia.
• Head Bolt Pattern: Std. BBC Big M Bolt Pattern
• Inside Head Studs: P/N: 64210240 (Not included)
• Lifter Bores: BBC .8427" - .8437" 
• Main bearing bore: 2.937" – 2.938"
• Main caps: Ductile Iron (Sportsman) 4 bolt
• Oil system: Wet or Dry Sump - Main Priority Oiling
• Oil Galley, main: Stepped, 9/16" – 1/2" – 7/16"
• Oil Cooler Holes: None (Can use aftermarket inline)
• Oil Galley, filter main: 5/8"
• Oil Filter: Stock oil filter location
• Oil Pan: Std. BBC bolt pattern & Stroker pattern at mains
• Rear Main Seal: STD 1 pc seal 
• Hyd. Roller Provisions: Yes
• Serial No. On main caps / Front passenger side below deck
• Starter: Mounts in standard location
• Stud & bolt holes: Blind tapped
• Tapped Holes: Imperial
• Timing chain / gears: Std. BBC 
• Timing Cover: Gen 6 stock 6 bolt cover 
• Torque Specs: All ½" bolts – 100 ft lbs w/CMD #3 high pressure lube
• Centre relief valve not to be used if not using an external oil cooler
• Bypass valve number GM25161284