t stop thoughts/debate

[Bill Baer]

Originally Posted by sc7667

When starting out I was told and tried to set up the stop RPM so that you have a 2 to 2.5:1 ratio. even the stop manufacturers recommend this. I have had cars that it is 4000rpm and cars that that is closer to 5,000. I was told by Sherman Adcock once that you never want to go below 4000. I think it is because the convertor makes the car inconsistant.

Roy

I too have heard that and believe it's true.
Previously I tried to go back to near idle so my F.I. barrell valve would close but it wasn't consistent so some time ago I started to take it down to ~4500 and I found that to be much more consistent.
The type of stop you use can make a difference also, if you get too low rpm with a blade type of stop it possible to get a lean stumble when it opens because you won't get an accelerator pump shot. Which of course is not a problem with an in line type stop.