Roadkill Extra

David Freiburger shares the exclusive tire-testing proving ground at Tire Rack while stuff goes up in smoke in the background. Spoiler alert: Watch this and you may find out whether we finished the One Lap of America race!

Roadkill Garage is famous for David Freiburger's sage Zip Tie Moment segments. This one was shot, but never aired.

David Freiburger talks about how he and Mike Finnegan met, and how Roadkill Garage was born.

David Freiburger and Rick Péwé ride off into the sunset in their new 1968 Wagoneer and talk about its pure greatness.

In this Roadkill Extra, hosts David Freiburger and Steve Dulcich discuss must-see car movies.

David Freiburger demonstrates the easy match required to learn an engine's displacement in cubic inches before and after an overbore or a stroker crankshaft.

This episode of Roadkill Extra reveals the backstory behind the stripped hulk of a Mopar that's been lurking in the background.

David Freiburger explains how to calculate the piston compression height needed to achieve the optimal zero deck height on any engine. The same info can be used to sort out custom connecting-rod lengths and stroker crankshafts.

Show Facebook followers answered a call for questions in force, which lead to this lively conversation between David Freiburger and Steve Dulcich where they discuss whether they have any lingering regrets from their magazine days.

Part of the saga of the One Lap of America adventure is that Mike Finnegan's 1969 Pontiac Firebird was still being built at Diversified Creations in Brighton, Michigan just a few days before the race.

It's time for more math class with David Freiburger as he explains how to calculate the change in engine rpm at any given speed after changing the rear-axle ratio, tire diameter or transmission ratio.

David Freiburger and Tony Angelo fight with installing a new master cylinder on Mike Finnegan's Firebird before the One Lap of America event.

Mike Finnegan and Tony Angelo are out on the road for the Roadkill trip to One Lap of America. This one is an extended cut of Mike Finnegan and Tony Angelo out on the road in Fin's 1969 Pontiac Firebird.

Steve Dulcich is cohost of Engine Masters and Roadkill Garage and has developed a cult following, so we sent him out solo for a question-and-answer session based on queries from fans on his @stevedulcich Instagram account.

Cohost and executive producer David Freiburger reveals a snapshot of what's to come in Roadkill-land, spilling the beans on future events, politics, episodes and project cars.

Elana Scherr, editor of Roadkill.com and Roadkill magazine, and former staff editor for HotRod.com and HOT ROD magazine, talks with two photojournalists about how to get started in the business.

David Freiburger talks his longstanding addiction to books and some of his recommendations for gearhead reading.

Roadkill cohost David Freiburger digs into his toolbox to show off some of his favorite old tools and problem-solvers.

David Freiburger answers questions about his roles as cohost of Roadkill, Roadkill Garage and Engine Masters, as well as past editor of HOT ROD, Hot Rod Deluxe, Car Craft, Rod and Custom, and 4-Wheel and Off-Road magazines.

In response to fan questions, David Freiburger explains the $3,000 Hooptie Challenge portion of the Roadkill Zip-Tie Drags annual fan-appreciation event.

David Freiburger and Tony Angelo learn that nearly every mechanical part of the 1969 Pontiac Firebird Mike Finnegan bought needs to be replaced, and the team has two or three days to complete it.

Mike Copeland of Diversified Creations in Brighton, Michigan shares tech tips and revelations about everything that needed to happen to get the 1969 Pontiac Firebird ready for the Tire Rack One Lap of America competition.

The engine in Mike Finnegan's Firebird died after just one lap of the road course in Memphis. Find out what really happened that day, as well as the hopeful delusion that the problem was nothing more than a backward fuel filter.