a stout four-bolt main block and vortec-style iron cylinder heads the vortec heads ... and unique dual-pattern camshaft help deliver more than 300 lb- ... ft of torque at 2000 rpm and hold it above that mark ... winning economical circle track engine vortec heads deliver big torque 350 hp 390 lb ... -ft torque installation notes · requires addition ... camshaft duration 050 in cylinder heads p/n 12558060 valve size in ... rpm 212° intake 222° exhaust vortec iron 64cc chambers 1.94 intake 1.50 ...
400 440 430 485 515 430 556 638 525 505 torque 347 365 395 400 404 424 475 469 424 551 ... engines as ls1 ls6 ls3 and l92 cylinder heads work well on it chevy ls series ... studs are also included all ls series heads will work withthec5rblock,butmaximu ... -main system and all ls small-block heads work with the engine crankshafts ... big 4.125-inch bores competition-proven heads and lightweight components such as ... iii-based engines gen iii and gen iv vortec truck engines although performance car ... built on this platform have been dubbed vortec they are generally distinguished by ... than car engines interestingly a 5.7l vortec ls engine has never been offered here ... block with 3.78-inch bores and aluminum heads · 5.3l themostcommonlstruckengin e, ... 6oraluminumblockl76andalu minum heads,withprovisionsforac tivefuelmanagement;someeq uipped with ...