IAC motor

[racer5039]

Q1
I have an older Full Throttle TB that didnt have a IAC motor on it.
I would like to add one to help in cold start up and idleing.
Can someone fill me in on a GM model & year that i can look for in the parts store. I have been told that there are 2 sizes .380" and .500"
This is on a SBC 406 N/A with Fast, 55's @ 52psi
motor made 710 with the carb on the dyno.
Drag only, not streetable


Q2
I have been running at about 13.4- 13.6 a/f's and it has worked well.
I would like to do some testing with a fatter A/F setting.
Is there an easy way to make some test programs with say 12.6 or 12.8 A/F's without spending a lot of time testing.
I would like to do an A-B-C test at the track and time will be vary limited.
thanks for the help.
Racer

 

[Spooled]

Just go into the A/F table and change the target ratio to whatever you want. It's as easy as that.

 

[racer5039]

Wouldn't I need to change the Inj. pulse times anso to keep the % of correction down?

I sure could use a "Fast" tuner here in Minn.
Racer

 

[Spooled]

Well, if your going a lot richer you might need to. But i wouldn't think your gonna go all that much richer. Your correction #'s should be low the way you're running. If they are, you should be good if you just richen the AF values. They'll probably go up a little, but no big deal.