Ford E-Series
Cutaway and chassis, 2015–

Factory gearing, tires, angles and brakes for the E-Series, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise.

Use this truck in the calculators

138 in wheelbase · 34.6 in front · 68.5 in rear overhang

Stock tireLT245/75R1630.5 in tall

Axle ratio4.1–4.56Factory, by trim

Crawl ratio18.1:1Best trim: E-350 Cutaway SRW 138

Clearance7 in6.5 to 7 in by trim

Highway mpg9Estimate, not EPA rated

Tire upgrades, worked out

E-350 Cutaway SRW 138, 4.1s, from LT245/75R16

Tire	Height	Under the diffs	Speedo at 65	RPM at 65	Gears for daily	Open
265/75R16	31.6 in	+0.6 in	63 mph	2,010	Keep 4.1s	Open →
285/75R16	32.8 in	+1.2 in	60 mph	1,937	4.56	Open →
33x10.50R16	33.0 in	+1.3 in	60 mph	1,927	4.56	Open →
255/85R16	33.1 in	+1.3 in	60 mph	1,923	4.56	Open →
315/75R16	34.6 in	+2.1 in	57 mph	1,838	4.88	Open →
35x12.50R16	35.0 in	+2.3 in	57 mph	1,817	4.88	Open →

Stock turns 2,087 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.

Trims

7 we have figures for

Trim	Tire	Transmission	Axle	Angles	Clearance	Open
E-350 Cutaway SRW 138	LT245/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.1 / 4.56	— · — · —	7.0 in	Use →
E-350 Cutaway/Stripped DRW 138	LT225/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.1 / 4.56	— · — · —	7.0 in	Use →
E-350 Cutaway/Stripped DRW 158	LT225/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.1 / 4.56	— · — · —	7.0 in	Use →
E-350 Cutaway/Stripped DRW 176	LT225/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.1 / 4.56	— · — · —	7.0 in	Use →
E-450 Cutaway/Stripped DRW 158	LT225/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.56	— · — · —	6.5 in	Use →
E-450 Cutaway/Stripped DRW 176	LT225/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.56	— · — · —	6.5 in	Use →
E-350 Cutaway SRW 158	LT245/75R16	Ford 5R110W TorqShift 5-speed automatic, Ford 6R140 TorqShift HD 6-speed automatic	4.1 / 4.56	— · — · —	7.0 in	Use →

Size

Wheelbase: 138 in to 176 in
Front overhang: 34.6 in
Rear overhang: 50.5 in to 68.5 in
Height: 84 in
Body: Van
Stock tires: LT225/75R16, LT245/75R16

Transmissions and low range

Ford 5R110W TorqShift 5-speed automatic: 3.11 · 2.2 · 1.54 · 1 · 0.71
Ford 6R140 TorqShift HD 6-speed automatic: 3.974 · 2.318 · 1.516 · 1.149 · 0.858 · 0.674

Axles

Front: Twin I-Beam independent (2WD, no front diff)
Rear: Full-floating (Ford names no axle model). Aftermarket fitment lists Sterling 10.5 (37 spline) for E-350/E-450 2011-2015; no gear-set fitment found naming 2016+ E-Series.
4.1 ratio: E-350 Cutaway SRW 138, E-350 Cutaway/Stripped DRW 138, E-350 Cutaway/Stripped DRW 158, E-350 Cutaway/Stripped DRW 176, E-350 Cutaway SRW 158
4.56 ratio: E-350 Cutaway SRW 138, E-350 Cutaway/Stripped DRW 138, E-350 Cutaway/Stripped DRW 158, E-350 Cutaway/Stripped DRW 176, E-450 Cutaway/Stripped DRW 158, E-450 Cutaway/Stripped DRW 176, E-350 Cutaway SRW 158
Ratios made for it: 3.55 · 3.73 · 4.11 · 4.3 · 4.56 · 4.88

Brakes

Front rotor: 13.58 in, 345 mm
Front caliper piston: 59.9 mm
Rear rotor: 13.58 in, 345 mm
Rear: disc (ventilated)

Suspension

Front: Twin I-Beam (2WD), coil springs
Rear: leaf springs, solid axle
Rear layout: Leaf springs

Fuel economy

Highway, not EPA rated: about 9 mpg
Where it comes from: Owner average, 16 trucks, mixed driving (2017 E-350 Super Duty (cutaways, motorhomes, vans; 6.8 V10 and 6.2 V8, 6R140))
Source: fuelly.com

Every calculator, set up for the E-Series

Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tires RegearHighway RPM on every ratio and mpg.Pick your gears Crawl ratioHow slow it creeps, against other trucks.Work out crawl SpeedometerWhat it really reads on new tires.Fix your speedo LinksAnti-squat and what a lift does to it.Check your links Your rigBuild sheet and measured angles.Start a build sheet LeaderboardsWhere the E-Series ranks against every stock truck.See where it ranks

Source: media.ford.com. Ford fits 4.10 or 4.56 to the E-350 cutaway and 4.56 only to the E-450. No aftermarket gear sets list the 2016-on cutaway yet.

Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.

Ford E-SeriesCutaway and chassis, 2015–