Hamilton family top final day of Indy test.

Father/son tandem Bobby and Bobby Hamilton Jr led the final day of Nextel Cup Series testing at the Indianapolis Motor Speedway on Tuesday.

NASCAR Craftsman Truck Series regular [and 2004 Truck Series Champ] Bobby Hamilton topped the Cup Series regulars on the final day of testing for the Allstate 400 at the Brickyard with a lap of 183.905mph in the #04 Bobby Hamilton Racing Dodge. It was the fastest lap overall of six days of testing during the last three weeks at the historic 2.5-mile oval.

Bobby Hamilton Jr. was second fastest at 182.576mph in the #32 PPI Motorsport Tide Chevrolet with Bill Elliott, Kyle Busch and Martin Truex Jr rounding out the top five.

"We were actually up doing some chassis stuff for my truck and ended up running good," Bobby Hamilton said. "Obviously, if everything goes right we've got time to paint the car and all. It's an in-house car. We built it ourselves; we bought the chassis from PPI (Motorsports) and then put on our front and rear clips."

Hamilton knows it will be tough to make the Allstate 400 at the Brickyard field despite posting the fastest lap of the month.

"We have a very good truck organisation, but I'm smart enough to know that experience is what counts, and running a Cup team week in and week out is huge," he said. "We know we're against all odds coming here. We'll try to come up here and have a good time. We'd like to run good but we don't want to get in the way of the guys running for the Chase. But, we buy our pit passes just like they do."

2002 Allstate 400 at the Brickyard winner Elliott, now on a limited Nextel Cup schedule, was third at 182.562mph in the #91 Stanley Tools Dodge while Raybestos Rookie of the Year contender Busch was fourth at 182.450mph in the #5 Kellogg's Chevrolet.

The top four on Tuesday were faster than the previous fastest lap of the month, 181.963mph by Greg Biffle.

Indiana native Tony Stewart, winner of three of the last four Nextel Cup Series races, tested with a top lap of 178.385mph in the #20 Home Depot Chevrolet, good for 15th overall.

Four-time race winner Jeff Gordon also tested, as he continues his fight to earn a spot in the Chase for the Nextel Cup, as he is 120 points out of the top 10 in points. With only seven races remaining before the Chase begins, a successful race at Indianapolis would do much more than just bolster the team's position in the points.

"Everywhere we've tested this year, we've run well, (and) winning a big race like this definitely can help the morale of the team and build some momentum," Gordon said. "Right now we're looking at a stretch of races coming up that we have to run well to get in the top 10, and Indianapolis is one. It's an important race for us already, but it's one that we'd love to win."

Gordon has a shot at making history at the 2005 Allstate 400 at the Brickyard by becoming the first five-time winner of a major motorsports event at Indianapolis. While he wants a piece of history, Gordon said a fifth victory versus the four of Indianapolis 500 winners A.J. Foyt, A1 Unser and Rick Mears, and four-time United States Grand Prix winner Michael Schumacher, cannot be compared.

"Last year we were inspired," Gordon said. "To get number four was a great moment for me and this team. If the media wants to keep pumping it up, that's fine. For me, growing up as a kid and watching the Indy 500, I recognise that there's a difference between the two races. It's not that I wouldn't want to be compared to A.J. (Foyt), (Al) Unser and (Rick) Mears; it's just a different race and different circumstances."