This isn’t the 350 that your neighbor pulled out of a C10 truck and slapped a hot cam into. No, this is a 110-octane-only race crate engine built exclusively to win races at the local 1320. GM advises that the LSX454R comes with no warranty and is “not for road use”.
Enter the LT4 crate engine. Power comes on fast: a 1.7-liter Eaton supercharger spins at 20,000 rpm to force 9 pounds of boost into this 6.2-liter engine. That results in the same 650 horsepower and 650 torques you’ll find in the Z06 that’s sitting over at your local dealership, but for a fraction of the price.
The modern equivalent of that engine is GM’s ZZ427 crate motor. It stays true to the cast-iron block of its forefather, but runs pump-gas-friendly 10.0:1 compression, sports aluminum heads and an all-forged rotating assembly.
The Routan was designed to offer a firmer suspension for a more fun driving experience. Another fail. When compared to Kia and Honda used minivans, the firmer suspension makes for a clumsier experience all around. These shortcomings put a lot of pressure on the powertrain to offer a glimmer of hope for this used minivan. Nope, nope, nope.
Like the old COPOs of the 60s, the 2011-14 models adhered to strict NHRA guidelines. That meant super-small production numbers and a price payable only by professional race teams. It also meant the car’s engine could only make 530 horsepower. But much like the Japanese engine restrictions of the 1990s, that figure seems to have been framed in air quotes. In 2016 a (not extensively) modified 2014 COPO Camaro ran an 8.323-second quarter mile at 165.80 miles per hour. Doing the math, that car was making closer to 1200 horsepower. 1200.
GM crate engines can usually be ordered through your local GM dealership. You might see online retailers like JEGS or Crate Engine Depot offer these engines, but they’re almost always asking the same price as Chevrolet themselves. We’ve found the Gandrud Auto Group’s GM Performance Motor website is the best resource around. Please note, we are not responsible for large amounts of hours lost while browsing crate engines.
One good option the Dodge Grand Caravan has to offer is the Stow ‘n Go second-row seating system that allows you to quickly store the center row of seats for extra cargo space.
The name “Highboy” was not an official Ford term but a nickname given to it by enthusiasts. The 1977.5 models featured a negative arch leaf spring, which dropped the height by 4 inches leading to the “Highboy” nickname for the pre 1977.5 models and the post 1977.5 models being called “Lowboys”.