Chevrolet Performance 19170538 - New 427 454 Bare Block
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Building a new 427 or 454 big block engine? Nothing compares to the rich history and engineering that Chevrolet Performance has poured into this new Gen VI bare iron block. This block comes in a 4.250" finished bore and equipped with heavy duty 4-Bolt main caps. There are several key features to this block that make it the number one choice by both machine shops and engine builders for Chevrolet Big Block engine builds; including a machined fuel pump pad for mechanical fuel pumps, new water jacket designs for use with Mark IV or Gen VI heads, lifter valley machined for factory designed hydraulic roller lifter retaining system, reinforced main webs, and machined for clutch bosses on the side of the block for older style manual transmissions and clutch linkage . We have a full in-house machine shop ready to turn this bare block into a short block or turn key big block engine from your mildest to wildest dreams!
|Block||427/454 Gen VI|
|Max Recommended Bore||4.310"|
|Oiling||GM Wet Sump|
|Rear Seal Type||1-Piece|
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427/454 Bare Block Features and Improvements
- New Tooling and New Casting
- 4-Bolt Mains
- 1-Piece Rear Seal
- Deck Surface and Water Jackets Support Mark4, Mark5 and Mark6 Cylinder Head Designs
- Designed for Clearence of Double Row Timing Sets
- Provision for Mechanical Fuel Pump
- Added Material to Key Stress Areas in the Block
- Additional Oil Pressure Ports in Front Timing Cover Area and Oil Filter Pad
- Block Casting #19165955
California Proposition 65
WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov
- Item Requires Shipping
- 247.0 lbs.
- W25.5000” x H22.8000” x L38.3000”
- Free Shipping* on Orders over $99
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