Katech Introduces 'Sleeved' LT1 Cylinder Block - Engine Builder Magazine

Katech Introduces ‘Sleeved’ LT1 Cylinder Block

Katech's new "sleeved" LT1 cylinder block supports greater displacement Gen V LT1 engines and serves as the foundation for 427-cubic-inch (7.0L) engine combinations.

Katech’s new “sleeved” LT1 cylinder block supports greater displacement Gen V LT1 engines and serves as the foundation for 427-cubic-inch (7.0L) engine combinations – including Katech’s own 700-hp Street Attack 427 crate engine.

“We developed this sleeved block for our 427 crate engine package and now we are offering it to the public for your own build,” said Jason Harding, director of aftermarket operations, Katech. “It maintains an optimal bore/stroke ratio for high-revving performance and excellent durability. And with stronger sleeves than the originals, you can add power with the confidence the block will stand up to the pressure.”

Katech starts with a brand-new LT1 aluminum cylinder block and replaces the stock grey cast iron cylinder liners, which feature a 4.06-inch bore dimension, with stronger centrifugally cast ductile iron liners offered rough-bored to 4.120 inches or finish-honed to 4.125 inches or 4.130 inches.

Along with an approximate tensile strength of 120 ksi, the ductile iron sleeves flex more than the more-brittle original liners, which helps prevent cracking under very high cylinder pressures. Additionally, the bottom of the sleeves are machined to allow the use of a 4.000-inch stroke crankshaft.

With 4.125-inch bores and the 4.000-inch stroke, the enhanced LT1 block delivers the same dimensions as the previous-generation LS7 to create a 427-cubic-inch (7.0L) displacement.

Additional features of Katech’s sleeved LT1 block include:
* Double vacuum-impregnated
* Surface decked
* Camshaft bearings installed
* Machined for piston squirters
* Ships in a plastic tote (sold separately).

The block lists for $3,699.99 at katechengines.com. Katech also offers piston squirters to complement the block.

You May Also Like

Stef’s Performance Products’ 3-Gallon Truck Pull Dry Sump Tank

Stef’s Performance Products’ 3-gallon truck pull aluminum dry sump tank features a 9″ diameter, 19″ overall height, a two-piece design.

dry sump tank

Stef’s Performance Products' 3-gallon truck pull aluminum dry sump tank features a 9" diameter, 19" overall height, a two-piece design for easy cleaning, and the lower fitting is clockable in 45-degree increments. Part #4120 T also comes with a -16an inlet, -12an or -16an supply, 4" billet filler cap, and o-ringed sealed filler neck.

AMSOIL 5W-40 Synthetic Metric Motorcycle Oil

AMSOIL 5W-40 synthetic metric motorcycle oil is designed to excel in all areas unique to metric motorcycles, including high engine rpm, wet-clutch lubrication and extreme-pressure regions of gears.

AMSOIL motorcycle oil
Jomar 3-Piece Adjustable Pushrod Guide Plate Kits

Jomar’s kits are available for 5/16” or 3/8” pushrods, and for small block Ford and Chevrolet.

Jomar
JMS Daytona CD-1 Full Race Ignition System

This system optimizes the potential of distributor and crank trigger-based ignition systems on all 4, 6 and 8-cylinder engines.

Ignition
Fluidampr Toyota 2JZ Damper

Upgrading to a Fluidampr performance damper when engine mods are done further ensures long-term durability and optimum power.

Fluidampr Toyota 2JZ damper

Other Posts

AMSOIL Marine Engine Oil Now in Gallons

This new package size offers added convenience for owners of boats with larger sumps.

AMSOIL marine oil
Holley Terminator X Max EFI Kit for Godzilla Engines

This Terminator X Max EFI kit for Godzilla engines is latest in Holley’s growing portfolio of engine swap solutions.

Holley Terminator EFI
Cometic Duramax Top End Gasket Kit

Cometic’s Duramax gasket kit includes: 4.130″ bore, .047″ MLX cylinder head gaskets.

Cometic Duramax gaskets
ACL Oil Pump Catalog

ACL RACE Series oil pumps are designed with high output and high volume capabilities.