The price gap between a complete C7 Z06 and its engine says a lot about what it takes to make a car perform that well. On that note, it’s worth mentioning that all of the engines from this point forward are absolutely insane. They’re bonkers. They’re nuts. They have no business going into any car that isn’t equally advanced in the suspension, chassis, and safety departments. If you so much as look at them the wrong way, you should probably see a doctor. Here we go.
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.
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:
It also favors a hydraulic roller camshaft instead of the original’s flat-tappet cam. It makes a few extra ponies over the old model, too: 480 horsepower and 490 lb-ft of torque will melt any tires this engine’s hooked up to.
It also takes more torque to get oversized wheels turning which saps overall output and drains the gas tank much faster than normal. Swapping to lower gears and increasing the number in your gear ratio may be enough to offset the difference. A notable exception here is diesels, which sometimes put out so much torque that the difference with larger wheels isn’t noticeable.
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.
Even if you can overlook the drab exterior, the cheap plastic interior of this used minivan can almost turn your stomach. Once inside, you will find average passenger space and less-than-stellar cargo space. These things could be overlooked if the Grand Caravan offered a smooth and quiet ride, but it doesn’t offer either.
The single engine option after the 2008 model year is a 3.5L V6 that delivers 266 hp and 245 lb-ft of torque. The engine is always paired to a six-speed automatic. The combo offers middle-of-the-road fuel economy of 20 mpg combined. Where the Toyota Sienna stands out among used minivans is the available all-wheel drive system. This is a great option for buyers who must contend with a lot of snow and ice.