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Old 02-27-2005, 07:18 PM
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Dyno Tuning?

I am considering taking my car to one of those places that have chassis dynos. You know make a few pulls make a few improvements (basic stuff like carb tuning and timing) then make a few more pulls.

The car is a 66' Chevelle, 468BBC ~ 500HP, 700R4, 3.31 gears, 800cfm Edelbrock Carb, MSD / Mallory ignition

Does anyone have any experences in dealing with those folks?

Is it worth it?

How willing are they to offer suggestions?

Im basically looking to make the most of what I bring in the door, not necessarily start swapping gears, torque converters, cams or heads.

What are some basic rules and what can I expect?

And finally...How expensive are these services? I know I'll have to call around but I'm looking for a rough estimate of what this may cost.

Thanks

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Old 02-27-2005, 07:27 PM
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prepare to see numbers lower than expected. except when the bill comes.


racing the dyno is expensive ,but it does tell the truth. varies from place to place. like $135for a dyno block. its like 3 runs. they will try to sell you everything in the shop at prices that are hihger than summit. at school i got to use the chassis dynos on various combos, something everybody should at least expirience.

the gtech pro does not

i like to see the big motor with a reasonable gear,must be great fun on the street.

Last edited by spinn; 02-27-2005 at 07:37 PM.
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Old 02-27-2005, 09:08 PM
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Quote:
Originally Posted by 54 Chevy
I am considering taking my car to one of those places that have chassis dynos. You know make a few pulls make a few improvements (basic stuff like carb tuning and timing) then make a few more pulls.

The car is a 66' Chevelle, 468BBC ~ 500HP, 700R4, 3.31 gears, 800cfm Edelbrock Carb, MSD / Mallory ignition

Does anyone have any experences in dealing with those folks?

Is it worth it?

How willing are they to offer suggestions?

Im basically looking to make the most of what I bring in the door, not necessarily start swapping gears, torque converters, cams or heads.

What are some basic rules and what can I expect?

And finally...How expensive are these services? I know I'll have to call around but I'm looking for a rough estimate of what this may cost.

Thanks
A few things you want to make sure are available:
1) Wide band O2 sensor to measure fuel ratios
2) Timing light to make timing changes
3) Jets, to dial in fuel

One and two the shop should have, three you may need to bring your own.

Typically it's 100 to 125 for 3 pulls with wide band monitoring in our area. For a 1/2 day of tuning it can run around 500 bucks.

Make your first pull, if A/F ratios are in the 12.8 range your pretty well dialed in on wide open throttle. If your hard core you will jet up and down slightly to verify what the motor really likes and make additional pulls.

Next you verify total timing and adjust up and down to monitor trends in the power curve.

That's a pretty basic dyno session.

Assistance varies greatly from facilit to facility. Some shops will jump right in and some will stand by the computer screen and talk to your buddy while you sweat over a hot engine setting timing by yourself.

Rules are typically they drive it on the dyno and position on the wheels. They make the pull in the car.

It is one of the best tuning tools out there. Very worthwhile.
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Old 02-27-2005, 09:32 PM
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Track tuning

I prefer track tuning. $20.00 for 10 runs on the 1/8th mile. The timer doesn't lie.
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