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MAIN CAP WALK SPLITS BLOCKS!

DSS Racing Main Support System dampens the harmonics that make main caps walk. The pictures on the right are examples of what main cap walk can do if it is not controlled. Cracking the main webbing in a production block is common on engines without an Aluminum Main Support to dampen the harmonics. The DSS Main Support System adds an additional 3/4” thick main web to support the main and dampen the harmonics that crack blocks. This system has been race- proven in numerous 650+ HP production blocks.

• Includes custom ARP Main Studs and hardware • Fits most stock and aftermarket oil pans • Adds an additional 3/4” thick main web to your block • Bolts on, no costly machine work required • 650 HP capability from a production block • Makes your 2 bolt block stronger than a production 4 bolt main block • Constructed from 6061 T-6 Billet Aluminum to deaden the harmonics that cause main cap walk and block failure • Bolt on an additional 10 to 15 HP with the optional Pro Tray windage tray shown

WhyAreMainSupportSystems Important?

MSS1001 ........... 289, 302, 302 Boss 5.0 Production block also fits Dart Sportsman and Iron Eagle 8.2 deck fits most strokers MSS1002 ........... 5.0X Fits 8.2 deck Ford Racing 302 BOSS Fits most strokers MSS1020 ........... 351W/5.8W Production Block, Ford Racing 351 BOSS fits most strokers MSS1022............ 5.8 X fits 9.5 & 9.2 deck Dart Iron Eagle and Sportsman block MSS1032 ........... 4.6/5.4 Ford MOD 2V ,3V & 4V fits most strokers MSS1050 ........... 429/460 Big Block Ford fits most strokers

It seems that everybody today is trying to get more and more power from their engines. Increasing engine RPM, or adding nitrous, turbos or superchargers are some sure ways to increase power, but they can be very tough on durability. Additional stresses generated by running higher RPM or using power adders are transferred directly through the pistons, rods, and crankshaft to the block’s main webbing. Often, the reciprocating force can overwhelm the main bearing caps and the fasteners that hold them in place. Under heavy loads, the caps will shift or “walk” from side to side. This movement is transferred to the ends of the main cap fasteners, causing the threads to become fatigued. Eventually the main web cracks, leading to a loss in oil pressure and possibly total destruction of the block and internal components. To combat this problem, Ford Racing offers Splayed Four-Bolt main racing blocks. While excellent pieces, the price puts them out of reach for the average racing

Free up extra horsepower by reducing power- robbing oil windage! Also helps remove aeration from your oil, improving the quality of oil that is introduced into the oil pump!

enthusiast. This is where the DSS Main Support System comes in. Starting at just $329.95, the DSS Main Support System is a cost effective way to add strength to a production block without breaking the bank. Made of 3/4” Billet 6061-T6 aluminum, the DSS Main Support System effectively dampens damaging harmonics, virtually eliminating main bearing walk. The Main Support Plate is fastened to the main caps using custom ARP main studs (included), effectively tying all five main caps together. By adding another main web structure you dramatically increase the block’s strength, helping both block and crankshaft life. Our Main Support System makes it possible to produce 650- plus horsepower from a production block.

7005................................................. 289, 302, 5.0 For use with MSS # 1001 & 1002 7010 ................................................ 351W/, 5.8W For use with MSS # 1020 &1022 7015 ................................................ 429/460 Big Block Ford For use with MSS # 1050

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www.dssracing.com Phone : 630 -587- 1169

3550 Stern Ave. St Charles IL 60174