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Model
Blue Bird All American
Everything this runtime knows about the Blue Bird All American, each fact with its basis: published, measured, derived, modelled, assumed or estimated.
- Model years
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- Variants
- —
- Reference twins
- 1
- Registered
- 0
- Recalls
- —
Reference twin · All American FE · Cummins B6.7 diesel · Allison 2500 six-speed
The stock front-engine school bus a skoolie starts from: Blue Bird's published width, height, wheelbases, rating band and options, with Allison's gear ratios. Blue Bird prints no length, curb mass or axle ratio, so there is no road load.
- Model years
- —
Body and dimensions body · structure
| Fact | Value | Basis | Note |
|---|---|---|---|
| Configuration | Type D school bus, engine ahead of the front axle; the stock bus a skoolie build starts from | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Seating | Up to 89, by floor plan | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Body width | 2.44 m (96 in) | published | Blue Bird's sheet and current web page agree. |
| Height | 3.07–3.25 m (121–128 in) | published | By roof and floor option. Blue Bird 2021 sheet; the current web page prints 122–128 in, roof options excluded. |
| Wheelbase | 3.58–5.89 m (141–232 in) | published | Five wheelbases: 141, 169, 190, 211 and 232 in. Blue Bird 2021 sheet. |
Mass body · structure
| Fact | Value | Basis | Note |
|---|---|---|---|
| Gross vehicle weight rating | Up to 16,420 kg (36,200 lb) | published | Blue Bird 2021 sheet; axle ratings vary by capacity. |
Cummins B6.7 diesel powertrain · engine
| Fact | Value | Basis | Note |
|---|---|---|---|
| Layout | Inline-six turbodiesel, ahead of the front axle | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Bore × stroke | 107.0 × 124.0 mm | published | Cummins data sheet for a B6.7 generator-set engine; bore and stroke belong to the block, whatever the rating. |
| Displacement | 6.690 L | derived | π/4 · bore² · stroke · six cylinders; Cummins names it 6.7 L. |
| Rated power | 200–280 hp (149–209 kW), chosen at order | published | Blue Bird 2021 sheet; the current web page prints 200–300 hp. The rated speed is not in the sources read. |
Allison 2500 PTS six-speed automatic powertrain · transmission
| Fact | Value | Basis | Note |
|---|---|---|---|
| Type | Allison 2500 PTS six-speed automatic; the 3000 PTS and five-speed versions of both are offered | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Spread | 5.48 | derived | First over top gear. |
| Rear axle | Hypoid, single reduction; ratio chosen at order | published | Blue Bird 2021 sheet: "broad range of ratios available". |
| Tyre | 11R22.5, load range G, all-position radials | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Gear | Ratio |
|---|---|
| 1 | 3.51 |
| 2 | 1.90 |
| 3 | 1.44 |
| 4 | 1.00 |
| 5 | 0.74 |
| 6 | 0.64 |
published Allison's 2017 vocational model guide, 2500 series. With no axle ratio there is no overall ratio or road speed.
Brakes brakes · service
| Fact | Value | Basis | Note |
|---|---|---|---|
| Service brakes | Four-wheel hydraulic with four-channel ABS | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Options | Air drum or air disc brakes | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
Front suspension suspension · front
| Fact | Value | Basis | Note |
|---|---|---|---|
| Type | Soft-ride leaf springs; air suspension available | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
Rear suspension suspension · rear
| Fact | Value | Basis | Note |
|---|---|---|---|
| Type | Single-stage steel leaf springs, rated by capacity; air suspension available | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
Steering steering · gear
| Fact | Value | Basis | Note |
|---|---|---|---|
| Wheel cut | 50° | published | Blue Bird 2021 sheet and current web page. |
12 V electrical electrical · charging
| Fact | Value | Basis | Note |
|---|---|---|---|
| Alternator | 210, 240, 270, 280 or 320 A, chosen at order | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
| Starter draw | 500 A | assumed | Typical for an engine of this size, from CRE8VIRTUAL's electrical model. |
Fuel fuel · storage
| Fact | Value | Basis | Note |
|---|---|---|---|
| Tank | 227 L (60 US gal); 379 L (100 US gal) optional | published | Between the frame rails in the rear overhang. Blue Bird 2021 sheet. |
| Fuel | Diesel | published | Blue Bird All American FE diesel specification sheet SB-FEDIESEL0621. |
Not modelled yet
| System | Gap |
|---|---|
| powertrain | No combustion model for the B6.7: CRE8VIRTUAL's diesel model is the OM651, so this engine stands on its published bore, stroke and rating band. |
| powertrain | Cummins's rating sheets were not reachable: no rated speed, peak torque or compression ratio for the bus ratings. |
| powertrain | No numeric axle ratio and no five-speed or 3000 series ratios, so no overall ratios or road speed per gear. |
| powertrain | No performance figures: no axle ratio, curb mass or torque speed to run them from. |
| body | No overall length, curb mass, drag coefficient or frontal area published, so no road-load layer. |
| steering | No published turning circle; Blue Bird prints only the 50° wheel cut. |
| electrical | No battery rating for the front-engine bus in the sources read. |
| suspension | No spring or damper rates. |
| upfit | A skoolie's conversion (seat removal, insulation, roof raise, house power and water) is not modelled; this is the stock bus. |
Sources
- Blue Bird, All American FE diesel specification sheet SB-FEDIESEL0621, 2021 (accessed 2026-10-30)
- Blue Bird, All American FE diesel web page (accessed 2026-10-30)
- Allison Transmission, 2017 vocational model guide SA7943EN, a distributor-hosted copy (accessed 2026-10-30)
- Cummins, B6.7 generator-set engine data sheet (accessed 2026-10-30)
Model years
EPA's fuel-economy file lists no rows for this model. It covers light-duty vehicles; most vans and trucks over 8,500 lb GVWR are outside it.
EPA coastdown
no EPA coastdown is filed for that make and model; ingest `testcar` for its model years
Recalls and complaints
the catalog holds no such make and model; check the spelling, or ingest `recalls` for it
Registered on this runtime
No Blue Bird All American is registered on this runtime yet.