Eastbay and Volusia

[chupp n bloomer fan]

Do they limit them to that? Do they have to run a steel block and heads? Back in the day they ran up to 512 cui. I was always partial to the 498 cui. Now they can go to above 700 inch. I think they have a crate motor at 572 inches.

Not a 100%, but I thought 468 was there main motor or whatever.

[Josh Bayko]

Big Block modified's are the front runners up north 477 cu in make a 2400 lb car jump

The limit is 467 not 477.

[a25rjr]

Big Block modifieds are great at Volusia, real modified racing there these guys draw for position in heats buckle up and race and do not cry about it like the late models where they have the train racing format in full force.

Not totally true!.....lm heat race winners draw for position.

[jlacey]

1 of the best races i saw last speedweek was a big block race at Volusia. When Hearn came from way back in the field to win it. That and the race Clanton won in the last few laps and barely beat Bloomquist to the line

[Racerchaser]

Do they limit them to that? Do they have to run a steel block and heads? Back in the day they ran up to 512 cui. I was always partial to the 498 cui. Now they can go to above 700 inch. I think they have a crate motor at 572 inches.

Maximum displacement of 467 cubic inches will be permitted with a
minimum displacement of 396 cubic inches. An overall maximum tolerance of 10 cubic inches for
wear will be permitted, total of 477 cu in
C.)Aluminum engine blocks will not be permitted.
D.) Reverse rotation engines will not be permitted

Cylinder Heads
Any design cylinder head manufactured from cast aluminum or cast iron will be permitted.The minimum angle valve angle for any Chevrolet and/or GM type cylinder head will be 18 degr

[Racerchaser]

The limit is 467 not 477.

A maximum displacement of 467 cubic inches will be permitted with a
minimum displacement of 396 cubic inches. An overall maximum tolerance of 10 cubic inches for
wear will be permitted. total 477 cu in.........
Josh you know they start with 474 cu in.

[Josh Bayko]

A maximum displacement of 467 cubic inches will be permitted with a
minimum displacement of 396 cubic inches. An overall maximum tolerance of 10 cubic inches for
wear will be permitted. total 477 cu in.........
Josh you know they start with 474 cu in.

They don't. I crewed on big blocks for years.

[Racerchaser]

why does it say in the dirt rule book a total of 477 cu in then

rule 15.1 Engines page 33

[Josh Bayko]

why does it say in the dirt rule book a total of 477 cu in then

rule 15.1 Engines page 33

The limit is 467, and has been since the 80s. That's what builders build. They're so set on 467 that DIRT outlawed the 430s that got popular in the late 80s/early 90s, and the 358 small blocks that run in a lot of places currently get a weight penalty. And speaking of weight, they're at 2500 lbs, not 2400. An open 358 has to weigh 2650.