Anderson, Indiana-based company Speartech offers a wide array of different General Motors engine/transmission crate powertrain packages for car builders to easily drop into their home-built restomod. These range from more basic packages like a 6.2L LS3 V8 and Tremec six-speed manual, to more powerful and complex ones, such as a supercharged 6.2L LT5 V8 and GM 10-speed automatic.
This 6.2L LT5 V8 and 10-speed automatic transmission combination is notable, as GM does not offer this engine/transmission combination in any vehicle from the factory. The only production vehicle to feature the potent 755 horsepower LT5 V8 was the C7 Corvette ZR1, which was only available with a seven-speed manual or 8L90E eight-speed automatic. Additionally, Chevrolet Performance does not offer the 6.2L LT5 V8 as part of its Connect and Cruise line of crate engine packages, either, so Speartech has the turn-key LT5 V8/10-speed automatic crate package market cornered for now.
All Speartech crate packages come with the engine, transmission, wiring harness, throttle pedal, MAF sensor, oxygen sensors and the necessary computers and controllers for making the whole system work. They can also make the 6.2L LT5 V8 and GM 10-speed automatic transmission combination work with four-wheel-drive systems for trucks and SUVs and recently sent one of these unique packages out to a customer in Texas.
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Speartech says it developed its LT5 V8 and GM 10-speed automatic transmission combination in a 1969 Chevy C-10 pickup and experienced great drivability, responsive paddle shift performance and “shocking” horsepower and torque. This product would make an impressive powerful plug-and-play package for restomod builders who don’t want to fiddle with aftermarket superchargers and other parts that may not be of OEM quality.