street/strip engine question
 

hope you's dont mind me in this section. very healthy 496ci/auto, 67 chevelle. holley hp 950 carb. need to determine lean/rich conditions with 8'' of vacume @ idle. egt probes/system in the headers? tks a bunch for any suggestions.

Re: street/strip engine question
 

Put an O2 sensor and data logger in it.

Re: street/strip engine question
 

tks glen, who makes that system?

Re: street/strip engine question
 

Call him, you won’t be sorry...

http://www.motorsportsinnovations.com/

Re: street/strip engine question
 

Here is another option for an monitoring air /fuel ratio:
http://www.daytona-sensors.com/wego-...-displays.html
easy to install and has many options

Re: street/strip engine question
 

Ive used an Autometer wideband gauge and O2 sensor in my truck to get a tune out of it. Works great.

Re: street/strip engine question
 

With an idle with 8" vac. it must be fairly lumpy, so the wide band won't be very accurate at idle but will be useful above that,

Re: street/strip engine question
 

@ idle is the issue. way rich. have been all through the tuning to no avail.

Re: street/strip engine question
 

What have you tried?

Re: street/strip engine question
 

Does that carb have the holes in the butterflies?
On Dominators I've had success with restricting the idle feed holes.