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

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When building a Big Block Chevrolet performance engine, blocks from VPW offer strength,accuracy and peace
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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
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extra strength. Each cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications

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Features:

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• Deck Height : 9.800″

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• Bore : 4.275″

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• Main Bearing Size : Standard BBC

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• Main Caps: All 4 bolt – Steel or Ductile Iron

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• Largest Recommended Bore: 4.310″

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• Camshaft Bearing Diameter: Standard BBC

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• Camshaft Position: Standard BBC

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• Deck Thickness, min : Adequate for all applications

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• Torque Specs – Main Caps 1 – 5 1/2″ bolts 100 ft lbs w/CMD #3

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• 2 – 4 1/2″ splayed 100 ft lbs w/CMD #3

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• Dart’s inner head studs 3/8″ – 7/16″ stepped 50 ft lbs w/CMD #3

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• Material:  Iron 

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• Bore & stroke: 4.310 x 4.375″

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• Cam bearing bore ID: 2.120″ Std.

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• Cam bearings: Coated, grooved, w/3 oil holes PN# 32210030

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• Camshaft position: Standard 

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• Cam Drive: Timing chain, Gear drive & Belt drive

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• Cam Plug: Standard BBC 2.215″

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• Deck Height: 9.800″

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• Deck Thickness: Adequate for all applications

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• Dist. Tap Hole Valley: None

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• Fuel Pump Boss: Mechanical pump provision

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• Fuel Pump Pushrod: Std. BBC or +.200” for Raised cam/Big M² – P/N: PR200FP

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• Freeze Plugs: Std. Press in cup plugs 1 5/8 “dia.

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• Head Bolt Pattern: Std. BBC Big M Bolt Pattern

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• Inside Head Studs: P/N: 64210240 (Not included)

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• Lifter Bores: BBC .8427″ – .8437″ 

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• Main bearing bore: 2.937″ – 2.938″

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• Main caps: Ductile Iron (Sportsman) 4 bolt

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• Oil system: Wet or Dry Sump – Main Priority Oiling

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• Oil Galley, main: Stepped, 9/16″ – 1/2″ – 7/16″

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• Oil Cooler Holes: None (Can use aftermarket inline)

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• Oil Galley, filter main: 5/8″

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• Oil Filter: Stock oil filter location

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• Oil Pan: Std. BBC bolt pattern & Stroker pattern at mains

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• Rear Main Seal: STD 1 pc seal 

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• Hyd. Roller Provisions: Yes

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• Serial No. On main caps / Front passenger side below deck

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• Starter: Mounts in standard location

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• Stud & bolt holes: Blind tapped

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• Tapped Holes: Imperial

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• Timing chain / gears: Std. BBC 

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• Timing Cover: Gen 6 stock 6 bolt cover 

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• Torque Specs: All ½” bolts – 100 ft lbs w/CMD #3 high pressure lube

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• Centre relief valve not to be used if not using an external oil cooler

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• Bypass valve number GM25161284

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