Granfort Buying Comparison Guide
Granfort 370 GTX vs Monterey 385SS Super Sport
What buyers need to know.
| Monterey 385SS category | Super Sport bowrider — performance day boat with cabin |
| Granfort 370 GTX category | Dedicated sport cruiser — open-air overnight mission |
| Monterey 385SS published weight | 16,000 lb (published) |
| Granfort weight with engines | 13,500 lb |
| Value frame | Granfort is positioned as the more attainable first-choice cruiser |
2,500lb
11'6"
10yr
50mph
ABYC
Reader framing
This guide is for buyers who want to understand whether Granfort should be on the first-choice list.
The Monterey 385SS Super Sport is an impressive American performance boat. It delivers exceptional speed, premium craftsmanship, powerful triple-outboard capability, and a reputation built over decades. The Granfort 370 GTX is a different proposition: a dedicated sport cruiser designed around open-air entertaining, overnight comfort, ownership confidence, and long-term value.
The single most important number in this comparison is not horsepower. It is 2,500 pounds. Granfort publishes a 13,500 lb weight-with-engines reference, while Monterey publishes a 16,000 lb dry weight figure. That difference helps explain why Granfort can deliver 50 mph performance on twin 400 HP engines while maintaining a simpler, lighter sport-cruiser platform.
That is why this comparison should begin with ownership priorities rather than specifications alone.
If your goal is maximum speed, maximum horsepower, and the excitement of a Super Sport bowrider capable of reaching nearly 60 mph, Monterey deserves serious attention. If your goal is a true sport-cruiser ownership experience with open social flow, overnight capability, a wider beam, manufacturing depth, published compliance standards, and a balanced performance package, Granfort becomes the boat that deserves to be tested first.
Buyer education first
Before choosing between these two boats, decide which ownership experience you actually want.
Buyers comparing the Granfort 370 GTX and the Monterey 385SS are usually drawn to both for similar reasons: big outboard power, premium styling, open-deck entertaining, and some overnight capability. The important difference is priority. Monterey is built to excite first. Granfort is built to be owned, used, entertained on, slept aboard, and trusted as a complete sport-cruiser decision.
The Monterey 385SS Super Sport is a premium triple-outboard bowrider — maximised for performance and high-speed day use. With up to 1,200 HP, a 21° deep-V hull, and Boating Magazine confirming 57 mph with triple 300 HP Yamaha F300s, it is one of the fastest boats in this size range. The cabin is premium — 40″ TV, Blu-Ray, sound bar, microwave, central vacuum — but overnight use is secondary to the Super Sport identity.
The Granfort 370 GTX is a dedicated sport cruiser. It is 2,500 lb lighter against Monterey’s published dry-weight reference, 6 inches wider, and supported by published ABYC + U.S. Coast Guard compliance language in Granfort materials. Its overnight mission is not a bonus feature; it is central to the boat. For buyers who want the sport-cruiser experience first, Granfort becomes more than an alternative — it becomes the smarter boat to test first.
Simple buying question: do you want the fastest and most powerful Super Sport bowrider, or do you want the more complete sport-cruiser ownership equation? Monterey sells excitement first. Granfort makes the stronger case for buyers who want performance, social comfort, overnight use, value, and confidence working together.
Where Granfort wins
Lighter. Wider. More balanced. And built as a cruiser from the ground up.
The Granfort 370 GTX publishes a 13,500 lb weight-with-engines reference and an 11ft 6in beam. Monterey publishes 16,000 lb dry weight, 11ft beam, 39ft 5in LOA with engines, and 1,275 HP maximum power. Monterey has the raw-power ceiling. Granfort has the lighter, wider, more efficient cruiser platform — the kind of platform that feels easier to own, easier to handle, and more connected to the water every time you leave the dock.
Value is a genuine advantage when buyers compare the full ownership equation. Public Monterey pricing varies by model year, engine package, and dealer inventory, and many 385SS listings move well above the Granfort entry point once triple engines and options are considered. Granfort’s argument is not simply that it costs less; it is that it gives serious sport-cruiser buyers a lighter platform, wider beam, open social layout, weekend usability, published U.S. compliance language, Fibrafort manufacturing scale, and a strong 10-year structural warranty story in one package.
The real advantage is how it feels on the water: The social cockpit invites guests to stay. The stern feels like a large balcony over the water. The grill table, bar-style stools, and convertible lounge make the aft deck a genuine social destination. And the dry shower layout means a weekend aboard is actually comfortable — not a compromise.
What Monterey does well
1,275 HP. 21° deep-V. 57 mph test history. The American super sport experience.
The Monterey 385SS is a genuinely extraordinary performance boat. Boating Magazine tested the 385SE with triple Yamaha F300 300 HP engines and confirmed 57 mph top speed and approximately 4.5 seconds to plane. With current 2026 factory specs listing up to 1,275 HP, it is one of the most powerful boats in this size range.
The 21° deep-V hull is better suited to offshore chop and higher-speed rough water running than the Granfort’s 18°. The cabin is genuinely premium with a 40″ flat-screen TV, Blu-Ray player, sound bar, microwave, and central vacuum. Monterey has been building boats in Williston, Florida since 1965 — American-built confidence with 60 years of production history.
Published performance test data
Head-to-head published test data — speed, weight, and efficiency compared.
Boating Magazine published a well-known test of the earlier Monterey 385SE with triple 300 HP Yamaha F300 outboards. Monterey’s current 2026 385SS specs publish 16,000 lb dry weight, 250 gallons fuel, 49 gallons water, 21° deadrise, and 1,275 HP maximum power. The Granfort sea trial was published in April 2025. The fairest comparison is not simply top speed; it is what each boat gives the buyer for the ownership mission.
Granfort 370 GTX
Granfort 370 GTX · sea trial
| Weight with engines | 13,500 lb |
| Engines | 2×400 HP Mercury V10 |
| Top speed | 50 mph |
| 0 to plane | 7.5 seconds |
| Cruise fuel burn | ~13.2 GPH |
| HP : weight | 16.9 lb per HP |
| HP : weight (w/engines) | 16.9 lb per HP |
Monterey 385SS / 385SE
Monterey 385SE · Boating Magazine test
| Published weight | 16,000 lb |
| Test engines | 3×300 HP Yamaha F300 |
| Top speed | 57 mph |
| 0 to plane | ~4.5 seconds |
| Cruise speed | 36 mph @ 4,500 RPM |
| Cruise fuel burn | Not published |
| HP : weight (std 900 HP) | 17.8 lb per HP |
What the data tells you: Monterey owns the top-speed and raw-power argument. Granfort owns the balanced sport-cruiser argument. It reaches 50 mph on twin 400 HP engines from a lighter platform, publishes a low cruise fuel-burn figure, and gives buyers a wider cockpit with a lower-complexity twin-outboard setup. Monterey is the adrenaline choice; Granfort is the more complete first-choice cruiser for buyers who want performance without letting speed dominate the entire ownership decision.
Granfort 370 GTX
Granfort — rising in the luxury boating market.
Those ahead of the curve choose it.
01
Crafted with precision, backed by a 10-year structural warranty.
02
U.S.-certified, reliable, and built for discerning owners.
03
Book your personal test and experience Granfort firsthand.
The builder behind Granfort
Fibrafort — South America's largest boat manufacturer. 35 years. 18,000+ boats. 44 countries.
Granfort is the U.S. export brand of Fibrafort — the largest boat manufacturer in South America by units produced. Understanding the factory behind the name is part of understanding what gives the Granfort its ownership confidence story.
Fibrafort was founded in Brazil in 1990 and has built over 18,000 boats across more than three decades, exporting to customers in 44 countries. It is not a boutique builder. It is a high-volume, internationally certified manufacturer with a decades-long track record. The Granfort 370 GTX is built in that factory — to ABYC and U.S. Coast Guard standards, with Porsche Consulting’s process engineering embedded in the production system.
35+
18,000+
44
#1
Manufacturing pedigree
Porsche Consulting-advised production processes. Measurable results and a rare manufacturing differentiator.
Fibrafort — the manufacturer behind Granfort — engaged Porsche Consulting not to style a boat or attach a luxury name to the product, but to improve how its boats are developed, planned, produced, and delivered. The work focused on operational excellence: development processes, production flow, logistics, material and cost planning, purchasing, storage, and lean manufacturing practices.
The results were published and measurable: material costs reduced by 10%, extra daily parts orders cut by 90%, reject rate reduced from 28 items to 19, and overtime reduced by 48%. For Granfort buyers, this means the brand is backed not just by design and performance, but by a manufacturing culture shaped by lean thinking, process discipline, quality improvement, and continuous operational refinement.
Fibrafort + Porsche Consulting · Operational excellence
Porsche Consulting-advised production processes — measurable results
Material costs reduced 10% · parts orders cut 90% · reject rate reduced · overtime down 48%. Better process control supports more consistent production, fewer delays, stronger quality discipline, and a more reliable ownership experience.
Lifestyle decision
Monterey's super sport energy and performance cabin. Or Granfort's dedicated coastal cruising identity?
Monterey’s lifestyle is built around the Super Sport experience: maximum power, maximum excitement, maximum impact. The wide-open cockpit, large bow seating, hardtop options, and bold styling make every outing feel like an event. It is the boat for a buyer who wants the run itself to be the headline.
Granfort’s lifestyle is cruising with energy. The 370 GTX is designed for buyers who want the boat to feel alive on the water but also make sense after the throttle comes back: a more social cockpit, an open stern that feels like a balcony over the water, weekend usability, dry-shower comfort, and a simpler ownership equation. That is why Granfort should be experienced first by buyers shopping for a true sport cruiser.
Warranty and long-term confidence
The warranty is the builder's confidence statement. Read it carefully.
Granfort 370 GTX
10-YEAR STRUCTURAL
Monterey 385SS Super Sport
10-YEAR STRUCTURAL
Ownership cost comparison
The real equation continues after the purchase
A smart buyer does not compare only horsepower, top speed, or brand reputation. The stronger question is what the boat costs, protects, and delivers over several seasons of ownership.
Granfort’s ownership case is built around a lighter published platform, twin-engine simplicity, lower published cruise fuel burn, a wider beam, published ABYC and U.S. Coast Guard compliance language, Fibrafort’s large-scale manufacturing experience, Porsche Consulting-advised production processes, and a 10-year structural hull-and-deck warranty. Together, those factors create a broader ownership value story: easier operation, lower complexity, long-term confidence, and a sport-cruiser platform designed to be used frequently rather than occasionally.
Monterey’s value is also real: exceptional performance, higher horsepower capability, a proven 57 mph test history, offshore-friendly 21-degree deadrise, premium cabin amenities, and more than 60 years of American boatbuilding heritage. Buyers who prioritize maximum speed, aggressive offshore capability, and the Super Sport experience may find those strengths worth the additional complexity and operating costs that often accompany triple-outboard ownership.
The decision depends on whether those advantages matter more than Granfort’s lighter platform, simpler twin-engine configuration, wider cockpit, ownership-focused design, and balanced sport-cruiser value proposition. For many buyers, the question is not which boat is faster—it is which boat will deliver the better ownership experience year after year.
Side-by-side specification data
Every published number — validated and sourced.
| Category | Granfort 370 GTX | Monterey 385SS Super Sport | Buyer Meaning |
|---|---|---|---|
| Value position | More attainable sport-cruiser positioning · confirm current Granfort offer with dealer | Premium American Super Sport pricing varies by model year, engine package, and inventory | Granfort should be framed as the smarter first-choice value when the buyer wants a complete cruiser, not only maximum speed. |
| Weight with engines | 13,500 lb | See source notes | Lighter hull = better power-to-weight, more efficient fuel burn, more responsive feel at every throttle position. |
| Fuel capacity | 222 gal | See source notes | More fuel on a lighter hull = more range per dollar at cruise. |
| Top speed | 50 mph (published sea trial) | See source notes | Granfort achieves 50 mph on 800 HP from 13,500 lb. Confirmed in published manufacturer sea trial. |
| Max power | 800 HP (2×400 HP V10) | See source notes | Granfort’s 800 HP on a lighter hull delivers strong performance against heavier competitors with more HP. |
| Structural warranty | 10-year structural hull + deck (published) | Confirm with dealer | Granfort covers BOTH hull AND deck structurally for 10 years from day one. Confirm competitor terms in writing before purchase. |
| Certification | ABYC + U.S. Coast Guard (published in brochure) | Confirm with dealer | Granfort publishes ABYC and USCG compliance in its brochure. Verify competitor certification for the U.S. market specifically. |
| Manufacturing pedigree | Porsche Consulting-advised production processes (published) | — | Unique to Granfort in this segment and at any price. No competitor can make an equivalent published claim. |
| Builder heritage | Fibrafort · 35+ years · 18,000+ boats · 44 countries | See source notes | Granfort is backed by South America’s largest boat manufacturer by units produced — not a startup or boutique builder. |
What a serious buyer checks before signing
Six criteria that define a smart decision in this class.
01
Safety & certification
02
Structural warranty
03
Category match
04
Weight and performance
05
Construction technology
06
Price and mission value
What each boat is best for
Choose based on what you actually want to own — speed-first, or sport-cruiser first?
Choose the Monterey 385SS if you prioritise:
- Maximum raw power and top-speed image from a premium American Super Sport
- Triple-outboard performance and the excitement of a bowrider designed to impress immediately
- 21° deep-V geometry for high-speed confidence in rougher open-water conditions
- Large bowrider social energy with a premium entertainment cabin below
- American-built Monterey identity from Williston, Florida, with long brand recognition
- A boat where the run, the sound, the speed, and the visual impact are the main event
Choose the Granfort 370 GTX if you prioritise:
- A true sport-cruiser ownership equation: performance, social space, overnight comfort, and value together
- A lighter, wider platform that feels efficient, responsive, and easy to enjoy every weekend
- Open-air luxury: social cockpit, open bow, stern balcony feeling, grill table, and convertible lounge
- Weekend capability with cabin, enclosed head, dry-shower comfort, and 14-day / 4-night published capacity
- Fibrafort manufacturing depth: 35+ years, 18,000+ boats, 44 countries, and Porsche Consulting-advised processes
- A rising brand that serious buyers should experience first before paying more for a familiar name or speed-only image
The Granfort advantage beyond specs
Functional luxury is what turns the comparison into preference.
The buyer should not leave the article thinking only about numbers. The buyer should understand how Granfort improves the ownership experience.
Granfort’s value is in the complete package: dry shower comfort, cabin usability, open social cockpit, grill table, convertible stern lounge, aft balcony feeling, open-air design, 37-foot scale, and a warranty/certification story that supports confidence. These are the features that help the buyer move from “I am considering Granfort” to “Granfort may be my first choice.”
Final verdict
Monterey wins the speed-first argument. Granfort wins the first-choice sport cruiser decision.
The Monterey 385SS Super Sport is a serious American performance boat. It has the power ceiling, the 21° deep-V, the big bowrider presence, and the top-speed image that appeals to buyers who want a triple-outboard statement boat. If that is the mission, Monterey deserves respect.
But if the buyer is looking for the boat that makes the most sense to own first as a 37-foot sport cruiser, the Granfort 370 GTX becomes the stronger decision. It is lighter, wider, more open, more socially connected to the water, and designed around the full day-to-weekend boating experience — not only the fastest run across the bay.
Granfort’s advantage is the complete ownership equation: performance without excess complexity, open-air luxury without losing overnight comfort, a social cockpit that works at anchor, a stern that feels like a balcony over the water, Fibrafort manufacturing depth, Porsche Consulting-advised production discipline, and a warranty/compliance story serious buyers can review before signing.
The conclusion is simple: choose Monterey if you want the Super Sport statement. Choose Granfort if you want the sport cruiser you would rather own, use, entertain on, sleep aboard, and confidently recommend after the sea trial.
Ready to experience the sport cruiser difference?
The Granfort 370 GTX is available for private showings and sea trials in Florida. Lighter, wider, open-air, weekend-capable, and built around the complete sport-cruiser ownership equation — ready to compare today.
