Lingenfelter LT2 427 Stroker: An N/A 700-HP ‘Tour-de-Force’
Lingenfelter’s revamped, stroked-out LT2 makes more naturally-aspirated power than a C8 Z06.
Lingenfelter just dropped a bombshell with their new 7.0-liter LT2 427 stroker engine, and it’s making waves among Corvette enthusiasts.
Lingenfelter’s stroker is a beastly upgrade that packs more than 700 horses and 600 lbs.-ft of torque on 91 octane fuel. Now, those are some serious numbers, even for pump gas.
So, how did Lingenfelter pull off this feat? Well, they had to get creative. There were challenges–chief among them was the difficulty with increasing displacement due the LT2’s flush oil pan. Not enough clearance for a full crank throw with having some serious banging issues. However, they finally got that 4-inch stroke with Callies 6.125-inch H-beam connecting rods and Mahle 4.125-inch 2618 Power Pack pistons.
Not without painstaking testing and many, many hours, of course.
But that’s not all. Lingenfelter also worked some magic on the LT2 block, beefing it up with larger sleeves and lifter bushings, and tweaking the ventilation system to handle the extra crankcase pressure. And of course, none of this wouldn’t mean much if this powerhouse couldn’t play nice with the C8’s TR-9080 DCT. They fine-tuned the camshaft design to focus on smooth airflow and torque, avoiding any transmission headaches.
Naturally, they also had to say goodbye to the LT2’s factory displacement-on-demand system. Not that many people here on LS1Tech would cry a river over this, but hey, sacrifices must be made for more power, right? They dialed in an impressive 12:1 compression ratio, upgraded the valvetrain, and topped it off with fuel injectors and a high-pressure fuel pump.
The result? A jaw-dropping 704 horsepower and 600 pound-feet of torque. That’s enough to put a grin on any driver’s face. And now, Lingenfelter is gearing up to put this bad boy to the test in their own C8 test mule.
So, if you’re itching for more power without going the forced induction route or dealing with transmission headaches, take a note from Lingenfelter. They’ve clearly moving and shaking over there.
Photos: Lingenfelter
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