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Re: valve lash
Yeah, the feeler gage methode is good for solid lifters since on hydrolic lifters there is preload on the plungers. The diffrence here is about 14 hp and the life of valve train. (noise too) I guess its pretty important and the factory adjustment is good for 100 miles only.Also GM set the rev limmiter at 5700 because valves getting burnt not fully closing and hitting pistons as well (valve flosting) thats why perfomance people say that its better to set a greater lash for high reving engines.
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