VPW Engine Block- BB Chevrolet, 4.500'' 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 : 4.500"
- 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" (recommended 0.300" taller lifter for hydraulic roller applications)
- 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
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