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Re: Performance Lacking in a 383 Build.
How sure are you that the 15* of initial timing is actually 15*? When the pointer is at the TDC mark on the balancer, are you sure that the #1 piston is truly at TDC?
Aftermarket balancers and timing pointers can be inaccurate. If you’re setting your timing based on an incorrect TDC position, your 15* of initial could be more like 10*
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