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GM Document Hints at New DOHC LT5 V8 for Corvette

by Shane McGlaun
GM Document Hints at New DOHC LT5 V8 for Corvettezoom in

Oh now this is exciting! GM has traditionally used an old-school pushrod V8 in Corvette models. Back in the day for the C4 ZR-1 GM did cram a Lotus-designed DOHC V8 under the hood of that car. It looks as if GM is now set bring out a new 6.2-liter DOHC V8, known as the LT5.

This isn’t a rumor as much as a leak, the tip on the LT5 V8 comes directly from a GM service department manual, which turned up online and has since been taken down. The description reads “ENGINE GAS 8 CYL, 6.2L, SIDI, DOHC, VVT, ALUM, GM.” The document also indicated that the current LT1 and LT4 engines carry over. If this LT5 turns up in a 2018 Corvette, it could well be under the hood of the new ZR1.

While it’s more complicated than a pushrod engine, a DOHC motor could achieve a higher redline and greater horsepower for its size. That said, most racing purists tend to prefer the simplicity of pushrod engines for repairability and maintenance.

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