J35A1 Cylinder Block with CSS installed rated at 1000 WHP!
Does not include decking or bore & hone. 
CSS Blocks must be bored and use over sized pistons such as the P2R Traum 89.5mm pistons.

Street Cars - Race Cars - Drag Racing - Road Racing

The CylinderSupportSystem is simply the Best way to strengthen your OEM Aluminum Open Deck Cylinders, without the need of  full replacement sleeves.  Our proven method has racers around the world running incredible amounts of power reliably, while eliminating common issues associated with the aftermarket sleeving process. When running our CylinderSupportSystem you will no longer worry about full replacement sleeves sinking, leaking or shifting!

No Sinking - No Leaking - No Mainline Distortion - No Heat Soak

Our Support Rings are made from aircraft grade 6061-T6 aluminum which actually pulls post combustion heat away from the chamber, decreasing intake charge temps. Unlike thick cast iron replacement sleeves you will not have to worry about heat soak cutting your raceday or street cruise short.

Quality - Precision - Reliability - Proven Results

The Cylinder Support System process is NOT to be confused with the industry known “blockguard.” Why? Because it does not rely on the loose tolerance and taper(draft angle) of the factory casting. The Cylinder Support System process involves precisely machining the water passage, to accept our precision machined billet 6061 support rings. Our precision fit gives equal support pressure around the cylinders from the top of the support ring to the bottom of the support ring. Even the most finely filed/sanded blockguards cannot compete with the precision of our high quality CNC milling machines.