Yes, same engines as the UH1-N and the two Cobras you mentioned. Also installed in modified Sikorsky S-58s that originally had a radial engine, and another version of the Twin-Pac used as a power unit (ST series). The military T400 version uses PT6T-6 insteaad of the commercial PT6T-3 series.
The AH1-W and UH1-Y are complete upgrades including the GE CT-7 engines and Bell 214 type drivetrain, close to doubling the power of the Pratts and drivetrains of the UH1-N and AH1-T.
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Today's Featured Article - Field Modifications (Sins of the Farmer) - by Staff. Picture a new Chevrolet driving down the street without it's grill, right fender and trunk lid. Imagine a crude hole made in the hood to accommodate a new taller air cleaner, the fender wells cut away to make way for larger tires, and half of a sliding glass door used to replace the windshield. Top that off with an old set of '36 Ford headlight shells bolted to the hood. Pretty unlikely for a car... but for a tractor, this is pretty normal. It seems that more often than not they a
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