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This digitally remastered 370 cubic inch LS long block delivers a lot of bang for the buck. Our CNCs have machined these seasoned GM block, crank and heads to far beyond their original condition. Pairing these parts with superior quality aftermarket components allows us to pull out 630 horsepower on pump gas at a budget friendly price. 

The 6.0L iron GM blocks are bored and decked on our 4-axis which boasts a precision of 0.0002" and 1/1,000th of a degree. We also engrave and serialize the blocks here.  Their last machining step is on our CNC hone where the perfect surface finish is created to seat the rings and keep them lubricated. The crank is polished and rebalanced for its new forged rods and pistons. The rods may be Callies or Manley while the pistons are Manley or Diamond depending upon availability.

The heads are GM LS3's that have been milled flat and then CNC ported on our 5-axis mill.  The final machining operation is the valve job/bowl blend on our CNC seat & guide machine. The heads are assembled with GM valves and a Manley or comparable beehive spring kit.

If you want to see how all these machining steps are performed, check out this 

The valve train is centered on a BRE-custom, COMP hydraulic roller cam.  We use aftermarket pushrods, Isky or comparable lifters. The GM rockers are paired with a COMP trunnion kit to convert the stock LS Series rocker arms into captured roller trunnions for high-rpm stability and long-term reliability.

The net result is a rock solid engine that performs amazingly well and delivers great value doing it.  Want more power from this GM block? We offer a variety of other 370 and 408 cubic inch configurations for both naturally aspirated and boost applications.  Call us at 815-725-2727 with any questions.  We will be happy to help you select the build that is right for you.

Built for people who love motorsports by people who love motorsports

Payment Types Accepted: Cash, ACH, wire transfer, others with surcharge