World Products Gen VI Compatible Big Block - Engine Builder Magazine

World Products Gen VI Compatible Big Block

World Products is offering a new Gen VI Big Block compatible design. This block uses a one-piece rear seal, and has the Gen VI style oil pan rail and front cover bolt pattern. The block can utilize either the OE type roller lifters or +.300″ tall tie bar lifters. It also features a Mk IV style fuel pump boss and oil filter pad. The water jacket and deck surface will accommodate either Mk IV or Gen V-VI style cylinder heads, making this block extremely versatile.

The World Products Gen VI is available in either the standard 9.800″ big block deck height, or the tall 10.200″ deck. Cylinder bore sizes of 4.245″, 4.495 or 4.595″ are standard, with bores semi-finished to allow final honing to suit the specific pistons and ring packages chosen by the engine builder. Cylinders can be safely bored to 4.625″ and with slight clearance, the 9.800″ deck block can accept up to a 4.375″ stroke crankshaft and the 10.200″ deck can accept up to a 4.750″ stroke.

World Gen VI BBCSiamese cylinder bores and .600″ thick decks provide superior rigidity and strength. The World Gen VI is cast from high-strength iron alloy and precision machined on CNC machining centers for dimensional accuracy. World’s priority main oiling system delivers lubrication to the critical main bearings first for increased reliability. Nodular iron 4-bolt main caps are used for maximum strength.

Head bolt holes are blind tapped and do not go through into the water jackets. The valley has bosses machined for four extra head bolts to accommodate cylinder heads which utilize this feature.

Part numbers for the new blocks are:

081103  4.250 bore, 9.800 deck, cast cap  1pc rear seal

081105  4.500 bore, 9.800 deck, cast cap  1pc rear seal.

081115  4.600 bore, 10.200 deck, cast cap  1pc rear seal

Like all World’s blocks and heads, The Gen VI is 100% American made. World’s new digital inspection equipment and quality verification procedures ensure dimensional accuracy and mean you can be assured of total quality and performance.

You May Also Like

Wiseco 3.900″ Stroke Pistons for Chevy LS Engines

Forged in-house from race-proven 2618 aluminum alloy, these Wiseco pistons are available with a variety of dome configurations.

Wiseco has developed 3.900” stroke pistons for Chevy LS engines for use with aftermarket crankshafts. With bore sizes ranging from 3.780” to 4.185” it offers potential displacements from 350 to 429 cubic inches. Forged in-house from race-proven 2618 aluminum alloy, these pistons are available with a variety of dome configurations providing a compression ratio of 9.1:1 to 13.4:1 – ideal for naturally aspirated and boosted applications.

Summit Racing Camshaft Bearing Bore Alignment Tool

The Summit Racing Cam Bearing Alignment Tool fits Gen III and Gen IV LS engines.

cam bearing tool
Kaase Racing Engines’ P-51d Cylinder Heads

Kaase Racing Engines’ new P-51d cylinder head includes concepts developed from three years of revisions and testing.

Elgin Chrysler Hemi Engine Hydraulic Lifter/Guide Assemblies

Elgin Pro-Stock OE-quality hydraulic roller lifter/guide assemblies for 2004-newer Chrysler Hemi engines without MDS cylinder deactivation.

Isky Dual Valve Spring Set

These sets feature drop-in installation and are wound from chrome silicon wire.

Other Posts

ProCharged 572 cid Big Block Chevy Engine

Inspired to build a hot rod with all its systems exposed, Leroy Edwards used his 50 years of mechanic experience to build this cool-looking car himself. Powering this hot rod is a ProCharged 572 cid big block Chevy engine with nitrous adding an extra kick. Check it out!

big block Chevy engine
Exposed Hot Rod Features a 572 cid ProCharged Big Block Chevy Engine

In the weeks leading up to Sick Week 2024, we caught glimpses of Leroy Edwards’ custom-built yellow hot rod. With its unique look, even for drag-and-drive, we knew we had to know more about this build and the ProCharged big block Chevy engine Leroy put in it. We got the details in this episode of

A Deep Dive on Crankshafts at Callies Performance Products

We made a visit to Fostoria, OH recently to sit down with Callies President Heath Norton, Sales Manager Brook Piper and engine builder Billy Briggs of Billy Briggs Racing Engines to discuss the latest in crankshaft technology, trends and manufacturing. Check out this episode of Intellectual Horsepower brought to you by Callies Performance Products. Related

Why Oil and Fluid Analysis Makes Your Engine and Transmission Healthier

Much like a doctor’s visit for your own health, there’s no better way to understand what’s going on inside your engine and transmission than by having a fluid analysis performed. The process is not difficult, but having an expert discuss the results with you can be a game changer for the health and life of