13 小时之前 · GMC's huge Twin Six V12 gas engine was made to take on its diesel counterparts, powering fire trucks and farm machines, but it didn't stay on the market long.

2021年4月16日 · Today, these engines are hot-rodded to as high as 425 horsepower while remaining naturally aspirated by companies like ThunderV12. They’re an unconventional but …

2016年4月21日 · Seagrave and American LaFrance, to name two, offered V12 gas engines in fire trucks for decades. GMC’s V12 came along toward the end of the gasoline truck era, when …

2024年9月18日 · Rather than design a new engine from scratch, engineers took the all-new 351-ci (5.8-liter) V6, which was scheduled to debut in select 1960 models, and created a V12 …

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 …

Our goal is not to rebuild GMC V12 engines, but to create ThunderV12 engines. The basis of the ThunderV12 engine is the ultra-rare GMC 702 ci V12 engine manufactured from 1960 to 1965. …

2012年10月16日 · The Thunder V12 is a one-piece GMC iron-block that contains the forged, 180-pound crankshaft, four-bolt mains, seven main journals measuring 3.124 inches in diameter, …

SAE ratings of the day put this engine at 250 to 275 horsepower ( 2,400 rpm) with 585 to 630 lb-ft peak torque at 1,600 rpm. “This GMC engine has an unique distinction; it makes the most …

2021年10月4日 · The 702 V12 has found its way into a number of “specials” including the Blastolene B702. Here’s the B702 chassis and engine before that fanciful body was draped …

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, …