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Prime Time LaCrosse 3370MB

Travel trailerbuilt 2018–20Mixed build tierFindable on the used market
WHAT ONE COSTS
$30,500est. used (2020, 6 yr old)

Sticker was $49,661 in 2020. Out of production since 2020, so the used market is the only way to buy one. Estimate assumes a 2020 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~9,044 lbestimated as towed, for 2 people

dry weight 7,844 lb + fresh water (48 gal, full) 400 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around10,050 lb (10% margin)
GVWR (the sticker maximum)11,120 lb
Tongue weight, loaded~1,061 lb (12%)
Cargo capacity3,276 lb
WHICH TOW VEHICLES IT FITS: 35 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 3370MB's published weights held steady.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 1500 (6.2 V8, max tow) '19-2613,300 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Chevrolet Silverado 1500 (max tow) '14-1812,500 lbfits, loaded, with 10% margin
Chevrolet Silverado EV (4WT) '24-2612,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '24-2613,500 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '15-2013,200 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '21-2314,000 lbfits, loaded, with 10% margin
Ford F-150 (3.5 EcoBoost, max tow) '11-1411,300 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel) '11-1616,600 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
GMC Sierra EV '24-2612,000 lbfits, loaded, with 10% margin
Nissan Titan XD (Cummins diesel) '16-1912,710 lbfits, loaded, with 10% margin
Ram 1500 (3.0 Hurricane, max tow) '25-2611,610 lbfits, loaded, with 10% margin
Ram 1500 (5.7 Hemi eTorque, max tow) '19-2412,750 lbfits, loaded, with 10% margin
Ram 1500 (5.7 Hemi, max tow) '11-1810,620 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
Rivian R1T '22-2611,000 lbfits, loaded, with 10% margin
Tesla Cybertruck '24-2611,000 lbfits, loaded, with 10% margin
Toyota Tundra (5.7 V8, tow pkg) '11-2110,200 lbfits, loaded, with 10% margin
Toyota Tundra (i-Force Max, tow pkg) '22-2612,000 lbfits, loaded, with 10% margin
The 60it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length37.6 ft
Height (incl. A/C)11.1 ft
Width8.0 ft
GVWR11,120 lb
Dry weight7,844 lb
Dry tongue weight920 lb
Cargo capacity3,276 lb
Sleeps6
Slide-outs2
Axles2
Fresh water48 gal
Grey water64 gal
Black water30 gal
Air conditioning15,000 BTU
Awning12.5 ft

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Mid-bunk queen bed(Permanent)—
  • 1× Sofa converts(Convertible)—
  • 1× Dinette converts(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Prime Time (Mixed tier): Forest River

YEAR BY YEAR: WHAT CHANGED
  • 2018Introduced
  • 2020Final year
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Prime Time is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Mid-bunk layout with the lightest dry weight of the 33xx group.

OTHER LACROSSE FLOORPLANS
2911RB · 9,570 lb · sleeps 6292BHS · 9,445 lb · sleeps 10301RLS · 9,518 lb · sleeps 6303RKS · 9,730 lb · sleeps 4318BHS · 9,643 lb · sleeps 10319QBS · 9,613 lb · sleeps 10327RES · 11,297 lb · sleeps 4329BHT · 11,078 lb · sleeps 103310BH · 10,500 lb · sleeps 103311RK · 11,235 lb · sleeps 43375FE · 11,280 lb · sleeps 43380IB · 10,500 lb · sleeps 103399SE · 11,190 lb · sleeps 43411RK · 11,245 lb · sleeps 4the whole line →
Find one for sale

Live listings for the 3370MB on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole LaCrosse line ↗

Is the 3370MB your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from dealer and aggregator listings, retrieved 2026-07.