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Share This PageRegister now to get rid of these ads!Forum software by XenForo™ ©2010-2014 XenForo Ltd. What's better 4 bolt main or 2 bolt main?A 2-bolt main engine is better for power below 450 hp. If you are building for higher power, you will need a 4-bolt main. The higher the power you need to draw from an engine, the higher the load on the main caps. More bolts on the main caps are likely to hold on for long at higher output power and torque.
What does a 4 bolt main mean?Four bolt mains. What holds your crankshaft in place are the main caps which also hold the crankshaft bearings. A 2-bolt cap is fastened to the block by 2 bolts, and a 4-bolt cap has 4 bolts (2 on each side). When you increase the load on the crank, you also increase the load on the main caps.
Are LS engines 4 bolt mains?The LS was originally designed as an aluminum block engine with a deep skirt design, using four-bolt mains with a pair of horizontal cross-bolted fasteners. The blocks are fitted with relatively thin iron bore liners that limit maximum overbore to 0.010-inch.
Is the Vortec 350 a 4 bolt main?chevy 350 vortec engine 4 bolt main 96-00.
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