General Motors introduced a 6.6-liter V8 for the 2027 Silverado, delivering 481 hp and 501 lb-ft of torque. Yet the highest towing capacity in the lineup comes from the smaller 5.7-liter engine, rated to pull as much as 13,700 lb, as stated by GM, positioning it as the trailer hauler.
The new 6.6 liter L78 engine is the most powerful naturally aspirated V8 in the light duty truck segment, but its tow rating tops out at 9,700 pounds, a 4,000 pound gap between the two gas V8s.
GM’s own numbers show that the 5.7 liter Silverado can tow more than the 6.6 liter, which runs directly against what most truck buyers assume about displacement and towing.
According to engineers, the tow gap is not about cooling capacity, axle strength, or the transmission struggling to handle the bigger engine’s torque, but rather about customer behavior.
Buyers who tow heavy have historically ordered the 5.3 liter V8, so GM built its max trailering package around that engine’s replacement, the 5.7 liter.
The 6.6 liter is positioned instead in High Country, Denali, AT4X, and ZR2 trims, where buyers care more about content and refinement than chasing the highest tow number on the window sticker.
Read Also: Ridgeline TrailSport Hits 65k Miles Off-Road Doubts
Separate reporting adds that the 6.6 liter is not available on the Elevation trim, and you cannot pair the max tow package with the AT4 or Denali suspensions, a packaging and trim decision on top of the marketing one.
This means a shopper who wants both the bigger engine and the heaviest legal trailer simply cannot check both boxes on the same truck, a tradeoff that echoes what was found when a longtime Silverado leaser walked away over engine and ride complaints.
Tow Rating Comparison
For a buyer cross shopping half ton trucks purely on tow rating, the 5.7 liter Silverado now sits at the top of the class, a title Ford and GM have traded back and forth for years.
The 13,700 pound figure on the 5.7 liter beats the best Ford F-150 gas engine by 200 pounds, and it clears the Ram 1500’s HEMI V8 by a wide margin.
GM has not ruled out offering a higher tow rating on the 6.6 liter down the road, but nothing is confirmed yet, leaving potential buyers to weigh the importance of horsepower versus tow capacity.
Torque News sent GM media relations three questions on the record, including what specifically limits the 6.6 liter’s tow rating and which engine GM actually recommends for owners who tow regularly.
Read Also: Honda Ridgeline Beats Ford F-250 in Longevity Odds
For now, the practical read is simple: if maximum tow capacity is your priority, GM wants you in the 5.7 liter, not the 6.6 liter, even though the bigger engine has the horsepower bragging rights.
Marketing Strategy Shifts
GM’s decision to prioritize the 5.7 liter engine for towing is reflected in its marketing strategy, with the 6.6 liter engine positioned as a premium option for trims like High Country and Denali.
This approach suggests that GM is targeting buyers who value refinement and content over raw towing capacity, and are willing to pay a premium for it.
The 5.7 liter Silverado’s tow rating of 13,700 pounds puts it at the top of its class, ahead of Ford’s F-150 and Ram’s 1500, with the latter’s 5.7 liter HEMI topping out well short of 13,000 pounds.
Ford’s Coyote V8 and 3.5 liter EcoBoost also fall short of GM’s new number, making the 5.7 liter Silverado the best option for buyers who prioritize towing capacity.
The Ram 1500’s HEMI V8 trails behind the 5.7 liter Silverado by a significant margin, with its tow rating limited to just under 12,000 pounds.
Leave a Reply