Engine Blocks

Katech Gen V LT AFM/DI Delete Valley Cover Billet KAT-7672 Description This completely flat cover, eliminates AFM & DI on Gen 5 LT style engines (Excluding LT4) Requires non-AFM lifters Oil Port requires -4AN fitting with crush washer...

Katech Gen V LT AFM Delete Valley Cover Billet KAT-A6742 Description Eliminates AFM on most Gen 5 LT1 style engines (Excluding LT4 & L84/L87's) Requires non-AFM lifters Requires transfer of some parts from old valley cover: oil pressure...

Katech Gen V LT4/LT5 AFM Delete Valley Cover Billet KAT-A6851 Description Part Number KAT-A6851 Eliminates AFM on Gen 5 LT4/LT5 engines Requires non-AFM lifters Requires transfer of some parts from old valley cover: oil pressure sensor, PCV...

"Engine Builder Special" Chevrolet Performance Gen V LT1/LT4/L86 Aluminum Bare Block 12619168 **CALL FOR MORE INFORMATION ABOUT THESE "ENGINE BUILDER SPECIAL" BLOCKS** These "Engine Builder Special" blocks have minor imperfections/blemishes that make...

Mast Motorsports Black Label 650hp LS7 7.0L 427 Long Block 4.125 x 4.000 Type: LS7 7.0LDisplacement: 427 Cubic InchesCompression Ratio: 11.4:1Bore x Stroke: 4.125 x 4.000Rev Limit: 7250 RPMCrank: Callies...

Mast Motorsports Black Label 685hp LS7 7.0L 427 Long Block 4.125 x 4.000 Type: LS7 7.0LDisplacement: 427 Cubic InchesCompression Ratio: 11.4:1Bore x Stroke: 4.125 x 4.000Rev Limit: 7250 RPMCrank: Callies...

Mast Motorsports LSX 454 Short Block -25cc Dish 4.185 x 4.125 LSX 454 Short Block Engine - 600 - 1500 HP 58X or 24X Reluctor Wheel 4.185" Bore x 4.125" Stroke Torque Plate Honed Cylinders True Surface Decked Align Honed Block Coolant and...

Mast Motorsports LSX 454 Short Block -4cc Flat 4.185 x 4.125 LSX 454 Short Block Engine - 600 - 1500 HP 58X or 24X Reluctor Wheel 4.185" Bore x 4.125" Stroke Torque Plate Honed Cylinders True Surface Decked Align Honed Block Coolant and...

Mast Motorsports LSX 440 Short Block -25cc Dish 4.185 x 4.000 LSX 440 Short Block Engine - 600 - 1500 HP 58X or 24X Reluctor Wheel 4.185" Bore x 4.000" Stroke Torque Plate Honed Cylinders True Surface Decked Align Honed Block Coolant and...

Mast Motorsports LSX 440 Short Block -4cc Flat 4.185 x 4.000 LSX 440 Short Block Engine - 600 - 1500 HP 58X or 24X Reluctor Wheel 4.185" Bore x 4.000" Stroke Torque Plate Honed Cylinders True Surface Decked Align Honed Block Coolant and...

Mast Motorsports LS7 427 Short Block Flat 4.125 Bore 58x Dry Sump LS7 427 Short Block Engine 58X Reluctor Wheel 4.125" Bore x 4.000" Stroke Torque Plate Honed Cylinders True Surface Decked Align Honed Block Coolant and Oil Plugs Dura...

Mast Motorsports LS7 427 Short Block Dish 4.125 Bore 58x LS7 427 Short Block Engine 58X Reluctor Wheel 4.125" Bore x 4.000" Stroke Torque Plate Honed Cylinders True Surface Decked Align Honed Block Coolant and Oil Plugs Dura Bond Cam...