Engine Blocks

Billet Main Caps for GM LS Blocks (Will not fit LS7/LSX Blocks) Made in USA! With the influx of lesser quality goods and materials to the US, Pro-Gram Engineering solely uses materials certified as produced in the US. This helps guarantee the...

Chevrolet Performance LS Gen IV Valley Cover 12599296  

Chevrolet Performance Gen IV Valley Cover 12598832 Direct replacement LS2/LS3/LS7 engine valley cover. No provision for PCV, Includes O-Ring seals for DOD delete.

LSR Standard Deck Wet Aluminum Race Block FPE-LSR-SD10X   The FPE-LSR-SD10X is a premium aluminum Gen V LS Standard Deck Race Block designed for high-performance applications. Engineered with precision and built for durability, this race block...

Mahle Clevite P-Series Rod Bearing CB663P Clevite P-Series bearings were one of the first performance bearings available. Clevite® TriMetal™ engine bearings have been the industry standard since the first patent on the cast, copper,...

Mahle Clevite P-Series LS Rod Bearing Set CB663P(8) Clevite P-Series bearings were one of the first performance bearings available. Clevite® TriMetal™ engine bearings have been the industry standard since the first patent on the...

ARP Dart Iron LS Next Main Studs 134-5901 Works with DART Iron LS Next Block. (Use 234-5608 for Stock LS and LSX Blocks and use 134-5802 for Warhawk LS Aluminum Block.) ARP Main Studs are manufactured from 8740 chrome moly steel and heat treated...

ARP GM LS Main Studs 234-5608 Works with stock blocks, GMPP LSX blocks and most aftermarket blocks. (Use 134-5901 for DART Iron LS Next and use 134-5802 for Warhawk LS Aluminum Block.) ARP Main Studs are manufactured from 8740 chrome moly steel and...

Chevrolet Performance LS6 Valley Cover 12577927 This LS6 Valley Cover eliminates the two rear valve cover PCV hose connections as well as the PCV hose and PCV valve. Improves crankcase ventilation and decreases the quantity of oil and contaminants that...

Chevrolet Performance LSX 9.240" Deck Iron Bare Block 19417353 - 4.185" Bore Features: CNC Machined Cast Iron Block Siamese Cylinder Bores 6-Bolt Billet Main Caps 9.240" Deck Height 4.185" Finished Bore Max Horsepower 1500+  Note:...

Chevrolet Performance LSX 9.240" Deck Iron Bare Block 19417352 - 4.065" Bore Features: CNC Machined Cast Iron Block Siamese Cylinder Bores 6-Bolt Billet Main Caps 9.240" Deck Height 4.065" Finished Bore Max Horsepower 1500+  Note:...

Chevrolet Performance LSX 9.720" Deck Iron Bare Block 19417354 - 3.880" Bore Features: CNC Machined Cast Iron Block Wet or Dry Sump Capability Siamese Cylinder Bores 6-Bolt Main Caps Tall Deck 9.720" Semi-Finished Deck Height 3.880"...