What peak torque is shown on this dyno sheet?

The green trace shows 412.9 lbft at 4413 RPM (90 mph); the yellow trace shows 358.2 lbft at 4398 RPM.

What air/fuel ratios are recorded?

The yellow trace shows 11.43 AFR at 5626 RPM / 115 mph, and the green trace shows 12.21 AFR at 4286 RPM / 87 mph. The AFR curves drop from about 18 at low RPM to roughly 10.8-12 at higher RPM.

Where and when was this dyno run performed?

At Xact Dyno in Tempe, Arizona, on a Dynapack chassis dynamometer, dated 26-Apr-2007 at 12:10:42.

What correction method and settings were used?

Fly wheel torque was measured with SAE correction, a ratio of 3.448, and a torque correction factor (tcf) of 1.00; gains listed are 54.6 (torque) and 0.8 (AFR).

What vehicle/run is this dyno sheet for?

The Run ID is 'KOVACH STG3 SRT4-2' in folder 'UMS', indicating a Stage 3 SRT4 run.

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Dodge SRT-4 Stage 3 Dynapack Dyno Sheet - 412.9 lb-ft Torque & AFR Graph

Dynapack Xact Dyno Chart Flywheel Torque and Air-Fuel Ratio vs RPM (Petrol)

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Dynapack chassis dyno graph overlaying flywheel torque (peak 358.2 lb-ft at 4398 rpm) against petrol AFR sweep dropping to ~11.4:1 under load.

AI caption April 2007 · Photo 517 of 664

This document is a chassis dynamometer results sheet produced on a Dynapack dyno at Xact Dyno of Tempe, Arizona, dated 26-Apr-2007 (12:10:42). The run ID is "KOVACH STG3 SRT4-2" in the folder "UMS." The sheet shows two graphs plotted against Engine RPM (approximately 1775-6000 RPM). The left graph shows fly wheel torque (UMS, SAE correction method) in lbft, with peak values noted in the data boxes: 358.2 lbft at 4398 RPM / 90 mph (yellow trace) and 412.9 lbft at 4413 RPM / 90 mph (green trace). The right graph shows air/fuel ratio (AFR Petrol) versus RPM, with AFR values ranging from about 18 down to roughly 10.8-11.5 at higher RPM; data boxes list 11.43 AFR at 5626 RPM / 115 mph (yellow) and 12.21 AFR at 4286 RPM / 87 mph (green). Both tables display a gear ratio of 3.448, a torque correction factor (tcf) of 1.00, and gain values of 54.6 (torque) and 0.8 (AFR). A reader can learn the torque curve shape (torque climbing sharply from ~3000 RPM, peaking near 4400 RPM around 412.9 lbft, then falling toward 6000 RPM) and the fueling behavior of this Stage 3 SRT-4 build.

This document covers 2007, which may differ from this 1996 Ford Probe.

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Frequently asked questions

What peak torque is shown on this dyno sheet?: The green trace shows 412.9 lbft at 4413 RPM (90 mph); the yellow trace shows 358.2 lbft at 4398 RPM.
What air/fuel ratios are recorded?: The yellow trace shows 11.43 AFR at 5626 RPM / 115 mph, and the green trace shows 12.21 AFR at 4286 RPM / 87 mph. The AFR curves drop from about 18 at low RPM to roughly 10.8-12 at higher RPM.
Where and when was this dyno run performed?: At Xact Dyno in Tempe, Arizona, on a Dynapack chassis dynamometer, dated 26-Apr-2007 at 12:10:42.
What correction method and settings were used?: Fly wheel torque was measured with SAE correction, a ratio of 3.448, and a torque correction factor (tcf) of 1.00; gains listed are 54.6 (torque) and 0.8 (AFR).
What vehicle/run is this dyno sheet for?: The Run ID is 'KOVACH STG3 SRT4-2' in folder 'UMS', indicating a Stage 3 SRT4 run.