They mechanically lock the rubber to the rim so that sidewall sag from less than stock psi doesn’t drop the bead and leave you stranded. An added bonus to these is that their distinctive look adds to the curb appeal along with other Jeep mods.
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”.
We will give you specific information as to why these are the worst used minivans to buy, so that you can decide whether you agree with us or not. Also, our list is in no particular order, so Number 1 is not necessarily the worst used minivan in the world, just the first unit that came to our attention.
It has 113-cc intake ports, 2.25-inch intake valves and 1.88-inch exhaust valves, a massive 1150cfm carb (yes, a carb), a solid-roller cam with 0.714 inches of lift, 12:1 compression, and it requires 110 octane fuel. Here’s GM’s succinct English translation of those stats:
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 Nissan Quest does have the saving grace of being equipped with a fuel efficient engine for the class. The most recent models are all powered by a 3.5L V6 that is capable of 260 hp and 240 lb-ft of torque while delivering 22 mpg on the highway.
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 alternative is to either rebuild an old engine yourself, have an engine builder do it for you, or buy a custom-made engine directly from an engine builder. Each of these options has a fair share of hurdles, and often it’s cheaper to order a crate engine than it is to go those other ways.