So I've finally gotten around to mapping the timing events of this new HEI style distributor. This morning I just measured with the vacuum can connected. Tomorrow morning I will measure with it disconnected and the hose plugged. I started at about 700 RPM as this was about as low as I could drop it and keep the engine running reliably.
RPM Timing
----------------
700 16
800 16
900 16
1000 16
1250 20
1500 25
1750 34
2000 39
2250 42
2500 45
2750 47
3000 50
I have an timing light with a built in tach and advance adjustment. Obviously all measurements here are approximate.
This seems a bit aggressive to me but obviously I don't know for sure what this profile should look like otherwise I wouldn't be here. I'm pretty sure my curve is off but that's based off of a gut feeling that I feel like there's more power to be had with my current setup. She just feels a little mushy. Am I right in my assumption here or are things looking ok? Do I need to take some more measurments with vacuum connected?
Pertinent info: idle currently set at 1000, Holley 1940 carb, stock exhaust, unknown cam (let's assume stock), C4, unknown rear-end (again, let's just assume stock)
I still plan to measure how much vacuum I have but haven't gotten that far yet. I've got a guage but I just haven't taken the time to do it. I should just do that tomorrow when I plan to disconnect the can and check to see how much mechanical advance I'm actually looking at.
RPM Timing
----------------
700 16
800 16
900 16
1000 16
1250 20
1500 25
1750 34
2000 39
2250 42
2500 45
2750 47
3000 50
I have an timing light with a built in tach and advance adjustment. Obviously all measurements here are approximate.
This seems a bit aggressive to me but obviously I don't know for sure what this profile should look like otherwise I wouldn't be here. I'm pretty sure my curve is off but that's based off of a gut feeling that I feel like there's more power to be had with my current setup. She just feels a little mushy. Am I right in my assumption here or are things looking ok? Do I need to take some more measurments with vacuum connected?
Pertinent info: idle currently set at 1000, Holley 1940 carb, stock exhaust, unknown cam (let's assume stock), C4, unknown rear-end (again, let's just assume stock)
I still plan to measure how much vacuum I have but haven't gotten that far yet. I've got a guage but I just haven't taken the time to do it. I should just do that tomorrow when I plan to disconnect the can and check to see how much mechanical advance I'm actually looking at.