EMPI GT-1 Performance Camshaft for Air-Cooled VW, 275 Degree Duration

The GT-1 is the mildest profile in EMPI's GT Series, chosen for small displacement engines that need usable low range power and a smooth idle. It suits street cars, dune buggies, sand rails and buses, and is ground from a new chilled cast iron billet, then Parkerized to help the lobes through break-in.

Technical Details

• Valve lift: .422 in. at 1.1:1 rocker ratio
• Cam lift: .384 in.
• Duration: 275 degrees
• Material: chilled cast iron billet, Parkerized, stroker clearanced
• Comparable to: Engle W100
• Included: grade 8 hardware, assembly lube and cam card

Fitment & Compatibility

For small displacement air-cooled VW engines in street, dune buggy, sand rail and bus use. EMPI recommends installing new EMPI lifters, part number 21-4300-0, with every new camshaft, so plan on replacing the old lifters at the same time. If you are unsure which profile suits your build, contact PMB Performance. We have spent over 20 years working through air-cooled engine questions like this one.

GT-1 77-2104-0 spec card (PDF)

Specifications