Dad's AFR Meter Mounting - Help
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
Gary, I hope this will not be construed as a "hijack"...
Since you already have everything hooked up on "Rusty", how about driving up the hill near your house [you mentioned it recently] at a certain speed and record the readings [AFR/vacuum/?]. Then, when the test on the 300 is done, the same conditions can be repeated [IF the 300 can climb the same hill???
]. It would be a neat comparison as to what goes on when performing the same amount of work with two very different engines.
What do you think?
Since you already have everything hooked up on "Rusty", how about driving up the hill near your house [you mentioned it recently] at a certain speed and record the readings [AFR/vacuum/?]. Then, when the test on the 300 is done, the same conditions can be repeated [IF the 300 can climb the same hill???
]. It would be a neat comparison as to what goes on when performing the same amount of work with two very different engines.What do you think?
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FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Not a hijack at all. And, a good idea. Once I get the Windows laptop, which is supposed to be tonight, I can download the current data from the AFR meter and clear it. Then I can make some runs up the hills - there are actually two. One is steep, probably 1/4 mile long, and the speed limit is 40 MPH. The other is long, maybe almost a mile, and in a 65 MPH zone, and while not terribly steep it is a known load.
So, I can make some runs on those while the meter is recording and see what that looks like. However, Rusty is running a C6 and 3.50 gears, so the RPM we see on the chart won't be the same as your truck at the same road speed, which will complicate things a bit.
So, I can make some runs on those while the meter is recording and see what that looks like. However, Rusty is running a C6 and 3.50 gears, so the RPM we see on the chart won't be the same as your truck at the same road speed, which will complicate things a bit.
Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
Running mine in 3rd gear [1:1] with the 3.08 rear gears would make the RPMs closer, for comparison purposes.
Also, you might do a WOT run [short distance] to see how low the vacuum goes. The six cylinder with 1 barrel is known to have very restrictive intake and some have reported that the vacuum does not go below something like 3-4" HG.
Also, you might do a WOT run [short distance] to see how low the vacuum goes. The six cylinder with 1 barrel is known to have very restrictive intake and some have reported that the vacuum does not go below something like 3-4" HG.
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FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Guys - I started a new thread called Carb Tuning w/AFR Meter to carry on the discussion of tuning, using the meter, hills, etc. I thought it would be good to let others see what we are talking about and not many opted to subscribe to this thread. See you there.
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