383 stroker timing help - Team Camaro Tech
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post #1 of 9 (permalink) Old Aug 21st, 06, 10:57 PM Thread Starter
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383 stroker timing help

i cant seem to get the timing right what should be the best timing for this block? it was set at 8* retard and it doesnt ping but when you set it to 8*advance it pings? its at 1* advance and still pings? the more retard the timing the better? im so confused
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post #2 of 9 (permalink) Old Aug 22nd, 06, 02:51 AM
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Re: 383 stroker timing help

I think you either have the wrong timing tab/balancer combo, or else a slipped outer ring on the balancer. The thing shouldn't even start at 8* retarded. What cc's are the heads? Gasket thickness? Deck height? 2 or 4 valve reliefs? You could have more compression than you think. Did you verify TDC between the balancer and timing tab when you assembled the engine?

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post #3 of 9 (permalink) Old Aug 22nd, 06, 11:22 AM Thread Starter
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Re: 383 stroker timing help

how do i check top dead center? or cheack and see if the markers are in the right spot?

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post #4 of 9 (permalink) Old Aug 22nd, 06, 12:16 PM
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Re: 383 stroker timing help

There are other ways but this will work... Pull the plugs and put your thumb over the plug hole on the #1 cyl. It's the closest to the radiator on the drivers side of the car. Pull the coil wire and with your thumb over the plug hole bump the engine around until pressure builds up and blows past your thumb. If your mark is right and you have the right pointer you should find the mark just approaching the pointer.

If that is what you have then you can put a socket on the crank and turn the engine by hand and line the timing mark with the pointer. If the pointer and mark are not even close, then you'll need a piston stop to aid you in dialing in TDC from here but you should be real close at this point...

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post #5 of 9 (permalink) Old Aug 22nd, 06, 12:50 PM
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Re: 383 stroker timing help

Dennis, just for my information how does the piston stop work.

-Doug
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post #6 of 9 (permalink) Old Aug 22nd, 06, 01:14 PM
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Re: 383 stroker timing help

In a nut shell you screw the positive stop (piston stop ) into the plug hole and turn the engine over by hand until it stops (piston hits the positive stop) and you mark the spot on the dampener. Then you turn the engine over by hand the opposite direction until the piston hits the stop again now mark the dampener again. TDC is directly in the middle of the 2 marks.

If you were degreeing a cam you would use a degree wheel instead of marking the dampener for more accuracy...

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post #7 of 9 (permalink) Old Aug 22nd, 06, 02:43 PM
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Re: 383 stroker timing help

Here's what a piston stop tool looks like; you definitely have a timing tab issue.




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post #8 of 9 (permalink) Old Aug 22nd, 06, 03:35 PM
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Re: 383 stroker timing help

So do you have to set the piston stop? It looks like you can spin it.

-Doug
68 RS/SS Conv
Restoration started 5/2007.
Have it for 08 nope
Have it for 09? nope but it runs and moves
Have it for Spring 2010?
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post #9 of 9 (permalink) Old Aug 22nd, 06, 03:53 PM
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Re: 383 stroker timing help

Yes, you can adjust it in or out to narrow the range on either side of TDC. There are also piston stops that have a hole iin the center to allow the compression out as you near TDC.

...Dennis
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