Performance Chevy LS Engine Comparison - LS Motors Decoded

Check out our in depth comparison of the best performance LS engines that are out in the market.Some hot rodders are reluctant to embrace the indisputable virtues of technology. Let's call them traditionalists. Others would rather push a Ford than drive a Chevy. Let's call them victims of brand loyalty. Then there are those who are more impressed by the number of valves an engine has, and the rpm it turns, than the tally it posts in the hp column. Now they're just out of their mind. In just a little over a decade, GM's LS engine platform has converted hoards of traditionalists and even Ford loyalists alike. These days, Gen III and IV small-blocks are popping up in everything from Chevelles to Mustangs, to BMWs, to Mazdas, to Jaguars, to Hondas, to Datsuns, and even Porsches. Staggering power, low mass, compact external dimensions, and excellent fuel mileage have made the Gen III/IV small-block the new King of engine swaps. Perhaps the most significant factor is the sheer number of LS motors now piling up in boneyards-which translates to cheap cores-and the constant influx of affordable aftermarket parts. Some of the cheapest and most potent hardware of all comes straight from the factory, as GM has continually updated the platform since its inception. There are now more than two dozen Gen III and IV variants in existence, so we've set up this guide to explain the differences between them to help you decide which is most appealing for your project car.inline_mediumwraptextright26491108/tech/engines_drivetrain/shortblock/0912chp_performance_chevy_ls_engine_comparison0912 chp_01_z+performance_chevy_ls_engine_comparison+en gine_faq.jpgTrue

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