Dwell Angle, Timing, and CHT sensor questions, Timing way off (well above 27 Deg) but runs...??? Options

[NJ914]

Looking for inputs from those who know...

Situation: Engine runs but timing is way off. 27 degrees is at 1800rpm[b]. 3500rpm is in the mid to upper 30's. When attempting to adjust the distributor to spec, engine dies. Only runs at higher timing angle. Not sure what the cause is.

1: Distributor gap is currently at 0.018" and dwell is 50-51 degrees through speed range.
Per the Haynes book, 1 degree of dwell can change the timing by 3 degrees.
Spec is 44 to 50 degrees.

Is this correct?

If I open the gap larger to bring the dwell down to 44 degrees, will this help bring the timing closer to spec?

2: Measured the CHT sensor cold and it was 3100 ohms. I believe it is supposed to be more in the 2000 - 2500 ohm range...?

What is the correct range for the CHT sensor cold?

It is supposed to drop below 100 ohms when up to temp. Is this correct?

Could the higher than spec resistance of the CHT sensor be contributing to the timing issue?

[914_teener]

It is not necessary to remove the engine to replace the pushrod tube seals and valve cover gaskets. Difficult to the novice but not necessary.

However...it is necessary to remove the rocker shafts to replace the push rod tubes and if not done correctly and not adjusted correctly....could screw up the valves. HOWEVER....if off by that much or if done incorrectly to affect the timing... you would defiantly know it either audibly or by inspecting and measuring the valve lash.

Should not affect the gear timing unless you didn't know the car or the "New Cam" is one that doesnt' work very well with the stock FI.

"New Cam"...interesting spelling.