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BoP Lab / Portland International Raceway

AS at Portland International Raceway

No mapOregon 2025

Track map: sectors and speed trap

Track map with timing sectors and speed trap
Shown for: Oregon 2026 (qualifying, race)
Class · click a class to switch, + to compare alongside
Track configuration
Events

This track has been raced on 2 configurations (19 Scoring Sidebar, 1.88 mi; 19 Scoring Sidebar, 1.97 mi). Laps on different configurations are not comparable, so only events on the 1.88 mile layout are shown; switch above to see the others.

PosCarDriverClass#LapTheoreticalQualRace5-lap stintConsistencyTrapS1S2S3
1Ford MustangRoss MurrayAS741:24.009 A-Q21:23.7371:24.009 A-Q21:25.102 A-R21:25.602 A-R2+0.835 A-R2139.5 A-Q131.509 A-Q228.557 A-Q123.671 A-Q2

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

Rule changes between these events

Oregon 2025 → Oregon 2026 2025-05-10 to 2026-05-09

AS Errors and Omissions

#38234 from American Sedan Committee · Rule change · TB 25-06 (2025-06 Fastrack)

neutralAS Ford Mustang GT 05-14 Restricted Prep Engine gains alternative gear ratios: 3.66, 2.43, 1.69, 1.32, 1.00, .65

In AS Spec Lines, Ford Mustang GT (05-14) with Restricted Prep Engine, add to Gear Ratios the following:
"or 3.66, 2.43, 1.69, 1.32, 1.00, .65"

Applies to Ford Mustang on this page: Ross Murray

AS RE: Previous Letter 37695 Update

#38245 from Michael Kamalian · Rule change · TB 25-07 (2025-07 Fastrack)

fasterAS Ford Mustang GT 5.0 2018- weight reduced from 3600 to 3525 lbs.

In AS Spec Lines, Ford Mustang GT 5.0 (2018-), change Weight as follows:
"3600 3525"

Applies to Ford Mustang on this page: Ross Murray

AS Cadillac CTS-V BOP Weight Change

#38640 from Alex Lozano · Rule change · TB 25-09 (2025-09 Fastrack)

fasterAS Cadillac CTS-V 04-07 Restricted Prep weight reduced 50 lbs to 3400.

In AS Spec Lines, Cadillac CTS-V (04-07) Restricted Prep., change Weight as follows:
"(Effective 11/1/2025) 3450 3400"

AS 1994 Mustang Spec Line Request

#39104 from Barry Borgschatz, Jr · Rule change · TB 25-12 (2025-12 Fastrack)

unclearAS Ford Mustang GT 94-04 Restricted Prep Engine now permits Ford Motorsport M-6250-F303 camshaft.

In AS Spec Lines, Ford Mustang GT(94-04) with Restricted Prep Engine, add to notes the following:
"Ford Motorsport #M-6250-F303 camshaft is permitted."

Applies to Ford Mustang on this page: Ross Murray

AS Restrictor Plate Change for Gen 2 Ford Coyote Engine

#39501 from American Sedan Committee · Rule change · TB 26-01 (2026-01 Fastrack)

slowerAS Ford Mustang Restricted Prep engines lose 3 mm restrictor plate, from 64 mm to 61 mm.

In AS Spec Lines, change Restrictor as follows:
Ford Mustang Incl. Cobra and Cobra R (79-93) and Mercury Capri (79-86) with Restricted Prep Engine: "64 mm 61 mm"
Ford Mustang GT (94-04) with Restricted Prep Engine: "64 mm 61 mm"
Ford Mustang Coupe GT (05-14) Restricted Prep 5.0L/6 speed 4 valves per cylinder: "64 mm 61 mm"
Ford Mustang GT (05-14) with Restricted Prep Engine: "64 mm 61 mm"
Ford Mustang GT 5.0L (15-17) Restricted Preparation: "64 mm 61 mm"

AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request

#39055 from Jason Smith · Rule change · TB 26-01 (2026-01 Fastrack)

neutralAS Chevy LS adds Edelbrock Performer RPM 71187 intake manifold with MSD 6014 ignition and 4776 Holly carburetor as spec line option.

In GCR, Section 9.1.6.D.2.h.2., add the following:
"(Effective 2/1/2026) i. Weight based on full preparation chassis choice spec line for GM LM7 5.3L
Carburetor Option:
Must use the full prep 4776 holly carburetor and spacer gasket
Edelbrock Performer RPM 71187 intake manifold
MSD 6014 ignition box
(Edelbrock part # kit 7118)"

AS Re-Organization of AS Spec lines for 2026

#39887 from American Sedan Committee · Rule change · TB 26-03 (2026-03 Fastrack)

neutralAS class Spec Lines reorganized for 2026; old table format with chassis, engine, weight, tire, and brake data deleted and moved to main rules and build sheets.

This AS Spec Lines re-organization simplifies the Spec Lines for all drivers. This version gives the chassis information on what
engines can be put in their cars. It removes information that is now repeated in the ruleset and adds engine/weight combos as
well as wheelbase/tire size information. The Notes in the Spec Lines have been reviewed to remove information now listed in
the engine build sheets and retain information pertinent to the chassis selected. Where there is nothing in the notes, it is not an
error. It just means everything a driver needs is now in the main rules or the build sheets.
In AS Spec Lines, delete current Spec Line in its entirety as follows:

A specification table follows in the original; it is not shown here.

AS Header Information Update for EFI Engine Build Sheets

#39886 from American Sedan Committee · Rule change · TB 26-04 (2026-04 Fastrack)

neutralAS EFI engine build sheets add permitted dry sumps, headers, camshaft kit, timing chain tensioner, and header diameter specifications.

In AS EFI Engine Build Sheets, add to notes as follows:
GM LS1, LS2, LS6: "Any three stage dry sump is permitted. 1-3/4” diameter headers permitted."
GM LS3, LT1: "Any three stage dry sump is permitted."
Ford 4.6L 2V and Ford 4.6L 3V: "Headers as specified in the Full Prep American Sedan rules may be used. Ford Performance
camshaft kit P/N M-6550-3V may be used."
Ford Gen 1, 2, and 3 5.0L: "MMR Secondary Timing Chain Tensioner Bracket #467893 is permitted."
Mopar 5. 7L and 6.1L: "1-3/4” diameter headers permitted."

AS Errors and Omissions

#39933 from American Sedan Committee · Rule change · TB 26-04 (2026-04 Fastrack)

fasterAS Ford Mustang GT 5.0L Gen3 Coyote loses 75 lbs, to 3525; oil catch tanks now required; LT1 Camaro/Firebird build sheet added.

In GCR, Section 9.1.6.D.5.b.1, change as follows:
"Full Preparation All cars only:"
In AS Spec Lines, Chevrolet/Pontiac Camaro & Firebird (93-02), change as follows:
Spec Line Engine/Weight (lbs.): "(1992-1997) LT1 5.7L/3200"
Flat Plate Restrictor Size Column: "N/A"
In GCR Section 9.1.6.F., add Build Sheet as follows:
Engine GM LT1 5.7L (1992-97)
OEM engine as manufactured for General Motors 93-97 Camaro

Show 27 more lines

Engine Block Casting 10125327
Cylinder Head Casting 10128374,12551561, 10207643
Port Volume
Bore 4.040in
Stroke 3.480in
Max Rod Length 5.7”
Valve Size Int.1.940” / Ex.1.60”
Cam Lift .460 Intake / .460 Exhaust
Cam Timing/Duration C/L 117deg Duration @.05 Lift
Deck Height 9.00
Compression Ratio 10.4:1
Rocker Arm Ratio 1.5:1
Intake Part #’S -
Throttle Body Bore 48mm (twin)
Restrictor Plate -
Fuel Injector Part# 17087325, 354119
Headers 1-3/4
In AS Spec Lines, GM Spec Lines (Cadillac, Chevrolet, Pontiac) change Spec Lines Engine/Weight (lbs.) as follows:
"LT1/6.2L/3600"
In GCR, Section 9.1.6.D.1.i. Oiling system, change as follows:
"6. Oil catch tanks are permitted required. All catch cans must be ventilated to the outside. All engine breathers or vapor
recirculation lines, if disconnected, shall vent to a catch tank of one (1) quart minimum capacity. Such catch tanks shall not be
mounted in the driver/passenger compartment."
In AS Spec Lines, Pontiac GTO (04- 06), change Wheelbase (in.)/Tire Column:
"109.8/275"
In AS Spec Lines, Ford Mustang GT 5.0L (15-23), Engine/Weight (lbs.) Column:
"Gen3Coyote/3600 3525"

What the rules allowed changed as listed; this does not say what any particular car ran.