From the Archive: Lingenfelter GMC Suburban has a 9.9-liter V-8: ThrowbackThursday
that we've drooled over in past issues.) Lingenfelter was handed an otherwise stock four-wheel-drive Suburban with 3.73 axles and a beefed-up GM 4L80-E four-speed automatic transmission. Out went the standard 230-horsepower 7.4-liter V-8. In its place went a marine-duty block, bored and stroked to an atmosphere-gulping 9.9 liters . Feeding this monster is a long-runner intake manifold designed by Mercury Marine, with Lingenfelter-tweaked GM port fuel injection.
If you can keep a lid on wheelspin in first gear, this Suburban in rear-wheel-drive mode will clear the 60-mph mark in 4.7 seconds. The rest of the Suburban remains unmodified, so it still has the aerodynamics of your average ranch house and weighs just about as much—a pavement-pounding 6289 pounds. Neither of which means anything to the horrific new engine, which affects the Suburban in strange and scary ways, ways that furrow the brows and tighten the lips of any upstanding suburbanite. Encounters with 550 horsepower and 705 pound-feet of torque will do that.
Take acceleration. If you can keep a lid on wheelspin in first gear, this Suburban in rear-wheel-drive mode will clear the 60-mph mark in—make a note, kids—4.7 seconds. Now consider the same deal with four-wheel drive. From a standstill, the big red wagon lurches left, then right, as the axles wind up, and then it's gone, with the speedo showing 60 in
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