Brand New ProComp Cast Iron Chevrolet Small Block Engine Block, 4.125" Bore, Ready-to-Assemble (Part #13104). Block is finish honed and ready to assemble. Will accept up to 3.750" stroke crankshafts with no additional work and will accept 3.875" stroke crankshafts with a small amount of grinding. Fits: Pre-1986 Chevrolet Small Block 350 V8 Engine with 2-Piece Rear Main Seal Boring Examples: Standard 4.125" bore makes: 372" with 3.480" stroke crankshaft 381" with 3.562" stroke crankshaft 400" with 3.750" stroke crankshaft 414" with 3.875" stroke crankshaft 427" with 4.000" stroke crankshaft When bored to .020" over (4.145"), it makes: 376" with 3.480" stroke crankshaft 385" with 3.562" stroke crankshaft 405" with 3.750" stroke crankshaft 418" with 3.875" stroke crankshaft 432" with 4.000" stroke crankshaft When bored to .030" over (4.155"), it makes: 377" with 3.480" stroke crankshaft 386" with 3.562" stroke crankshaft 406" with 3.750" stroke crankshaft 420" with 3.875" stroke crankshaft 434" with 4.000" stroke crankshaft When bored to .040" over (4.165"), it makes: 379" with 3.480" stroke crankshaft 388" with 3.562" stroke crankshaft 409" with 3.750" stroke crankshaft 422" with 3.875" stroke crankshaft 436" with 4.000" stroke crankshaft When bored to .060" over (4.185"), it makes: 383" with 3.480" stroke crankshaft 392" with 3.562" stroke crankshaft 413" with 3.750" stroke crankshaft 427" with 3.875" stroke crankshaft 440" with 4.000" stroke crankshaft Specs: Weight: Approximately 198 lbs. Cam Bearing Bore: 2.00" ID Suggested Cam Bearings: Durabond DT-1-1T Cam Bearing Press: .002" Cam Journal: 1.869" O.D. Cam Plug: 2.375" diameter cup plug Cylinder Wall Thickness: .250" + at 4.185" Deck Height: 9.025" Deck Thickness: .625"+ Fuel Pump: Mechanical pump boss included Fuel Pump Pushrod Length: Standard Freeze Plugs: Press-in cup style Lifter Bores: .842" - .843" Main Bearing Bore: 2.641" Main Bearing Size: 2.450" (350) Main Cap Press: .004" - .006" Main Caps: Steel 4 bolt (5) Main Cap Bolts: Splayed 8740 Main Cap Register: Stepped, no dowels Oil System: Wet sump - priority main oiling Oil Pump Shaft: .481" O.D. (standard SBC 350) Oil Pan: Standard SBC Rear Main Seal: Standard 2 piece SBC Starter: Standard SBC Stud Holes: Blind head stud holes Timing Chain/Gears: Standard SBC Timing Cover: Standard SBC Torque Specs: 7/16" bolts - 65 ft. lbs. & 3/8" bolts - 35 ft. lbs.
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