2023年4月25日 · Thunder V12 rates the performance version of its engines at 425 hp at 4200 rpm and 630 lb-ft of torque at 1800 rpm. A video on the site shows an engine briefly hitting its hard redline of 5000 rpm and staying in one piece.

2023年6月27日 · GMC rated the twin-six engine at 275 hp at 2400rpm and 630 lb-ft of torque. On the bright side, though, the torque figure arrives just off idle, at only 1600 rpm, giving you lots of usable power throughout the entire rev range.

2021年4月16日 · When the demand for more power and torque came, however, the answer was simple: cast two V6 blocks together to make one single V12 and throw regular V6 parts at it to make it work. As it turns...

2016年4月21日 · There, the V12 was prized for its ability to run 15,000 hours or more with only minor maintenance. We have it on good information that a few are still out there running today.

2021年10月4日 · V12 truck engines were not unheard of in the US and Europe, and the GMC’s 60 degree V6 certainly lent itself to doubling up. But it’s acquired an outsized reputation, and is a cult object for certain hot-rodders and lovers of outsized engines, so …

2012年10月16日 · According to Thunder, these engines are incredibly durable, with stationary applications running for more than 200,000 hours of service, including rebuilds. That's the equivalent of almost 23...

2024年9月18日 · According to GMC, the motor could run for up to 200,000 miles (321,869 km) without a major overhaul if properly maintained. Photo: Thunder V12 LLC. Though it showed much promise, the Twin Six...

2018年1月5日 · Back in the early 1960s, GMC wanted something monstrous to plop under the hoods of semi trucks, so engineers built an 11.5-liter V12 engine, Driving reported. It’s real, and it provided real...

2015年6月9日 · GMC, maker of Acadia, Sierra, and Canyon, made a 702 ci V12 engine from 1960 to 1965 that produced 275 hp and 630 lb-ft of torque. ThunderV12 brings them back.

GMC Built the 702 from 1960 to 1965 as a gas V12. The engine is a one-piece V12 with four heads that were also used on the GMC 351 V6. The block is one piece, not two v6’s joined together.