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Vacuum leaks, power valve blown
These should wake it up a bit too.
I wish I would have done some back to back testing of headers. I built a set of 4-2-1 headers for the 421 I put in my Monte.
I had it on an engine...
Especially the smashed header tests.
Big gap is hard on the ignition system, forces it to produce more voltage. .035-.040 is all you need.
Use this shiftkit dual feeds direct.
Torque plate honed?
All the late ones are 800.
If you're talking about the vacuum modulator, it goes to manifold vacuum. Either into a fitting in the manifold or the base of the carb.
I'd like to know too.
No it won't.
I assume the kit comes with an extra friction for OD.
Did you put the GM additive in it?
Where is this plastic bushing? Never seen one.
Custom cam with a iron gear on it, if you care to go that route.