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A Predator 420 in a GrandDaddy Is Exactly as Fun as It Sounds

Build by lightningxx /

SpiderCarts GrandDaddy go kart with a 420cc Predator engine
Photo: lightningxx / YouTube

There is restraint, and then there is bolting a 420cc Predator into a two-seat GrandDaddy. lightningxx went with the second option and filmed the first drive from the seat.

Point of view from the seat of the GrandDaddy driving across a field
Photo: lightningxx / YouTube

The POV does the talking. Open field, suspension working, and enough engine to make the whole thing feel a little bit naughty. The two-tone paint is a nice bonus.

POV of the GrandDaddy heading across open ground
Photo: lightningxx / YouTube

Short, loud, and grinning the whole way. If a big-bore GrandDaddy is the dream, the plans are right here.

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See the GrandDaddy plans