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GM Chevy LS Competition Series

Your #1 choice for your next GM LS engine build.

LT2K - 2000HP+ Shelf Series

Diamond's New LT2K Series for the GM LT1/LT4 Platforms. The first 2000HP shelf stock in the world available for the LT1 and LT4 GM engines.

Hemi-2K - 2000HP+ Shelf Series

Diamond's New Hemi-2K Series for the 6.2L Hellcat and 6.4L Apache Platforms. The first 2000HP shelf stock in the world available for the modern hemi platforms.

News & Tech

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Behind the Wheel with Motorcity Jimbo See what goes on between the sub-5 second passes of Pro 275 drag racer Motorcity Jimbo and his Procharged '68 Camaro.

Keep Racing on Instinct What happens when you bolt-up a procharger to a 427-inch Small Block Chevy and run it on alcohol in Ultra Street class? Well, it's a bit more elegant than that, but Brian Keep of Keep Racing Team is here to tell 'ya.

Diamond Adds Chevy LT Engines to the 2K Piston Series Diamond’s highly regarded “2K” series of shelf-stock forged aluminum pistons for robust 2,000 horsepower power-adder builds has been expanded to include the LT2K model to complement Chevy Gen V LT1/LT4 cylinder heads.