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84 Mutt
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284 Posts
Discussion Starter #1
I tried to hook up vac. advance to "full vac. source" like I read in a few posts. Car did not like it . She backfired when I cam of the throttle.Had to put it back to "ported".... Antreason why she backfired when hooked up this way?????
Just wanted to try it and I guess its a no no in my sled.
 

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I also wasted an afternoon retiming after hooking up to manifold vacuum.It may work on some vehicles, but it (454 BBC)sure did not like it at all.went from starting in half a crank to having to crank it for 10 seconds in order to get it to start. See a post related to this topic called "timing a big bolck chev" Make sure you misspell it, I never did correct the name of the thread.
 
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