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Discussion Starter #1
I have a problem with my timing moving as rpm's increase.

At idle I have 36 degrees, when I increase the rpm to 4000 my timing reduces to 28 degrees. I have no vacuum or mechanical advance, both are locked out.

As the engine returns to idle, the timing slowly creeps back up to 36 degrees.

The distributor is and HEI, I have tried a unilite as well and the same thing happens.

My question.. Does this sound like a strentch timing chain? Although its a new motor, less than 2000 miles on it, I believe that is the problem. I included the engine specs.

383
cam 260 duration @ .50 625 lift
10 to 1 compression
220 cc 2.02/1.6 valves
 

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Isn't this the same question that was asked in another post by you yesterday?
 

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If you have to run the timing at 36 degrees to get it to run, I would say your timing chain has jumped.

Did it run good before?
 
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