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  1. Engine
    Hi I am new here and i am building building a chevy 307 with vortec heads for my brother. The question is; which cam should i use with these vortec stock valve springs? I have read that these heads have a limit, about the max lift they can handle, but i want to put a nice hydraulic flat tappet...
  2. Engine
    Tried to search for the answer, got hundreds of hits but nothing in the first two pages seemed to answer my questions. 1. Is there any difference in the pistons between a 1/2-ton specced Vortec 5.7L, and the 8,600+ GVWR 3/4--1-ton Vortec 5.7L? As far as I can tell, GM offers two...
  3. Performance
    New to the board. I have a 1971 Blazer that I am doing a frame off on, and found this board to be the best/informative when it comes to all things BBC! :thumbsup: I have a 1997 Vortec 454 with less than 2,000 miles. I've been doing a lot of research on this site looking on the best route to...
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