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Old 02-14-2013, 08:35 PM
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496CHEVY3100 496CHEVY3100 is offline
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Since you have a chevelle you might want to keep the 396 But if you choose one of these you will get More Horsepower Per Dollar with more cubic inches and more reliable also the more hp per cu in the more stress on parts,the first engine is a 66 /427 factory rated at 425 hp the second is a 496 tri power same block different stroke and compression, this 427 ahs solid roller 12.5 cr square port heads roller 850 quick fuel carb etc.etc. etc probably in high 550 or better at about 6800 rpm,the 496 is oval port alum trick flows ,hyd roller cam 10.1flat tops 3 holley 500 2 bbl carbs roller rockers .Very depandable High tourque,respectable hp probably 550 or better at about 5800 rpm .VERY Sreetable the 427 ir radical for street both make abiut same power but tge 427 has to turn much more RPM to do the same job which do you think will last longer with less parts breakage ,,Just my opimion im sure there are many more...also you can keep your valve covers a nd decals A Sleeper.
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Last edited by 496CHEVY3100; 02-14-2013 at 08:44 PM.
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