| BAH |
Page Number: 21 |
| BLOWN ALCOHOL HYDRO
Unblown Fuel Hydro |
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| BFJ |
Page Number: 21 |
| BLOWN FLAT and JET
Blown Alcohol Flat
Unblown Fuel Flat
Blown Fuel Jet
|
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| Professional
Classes |
Page Number: 21 |
| The Professional Classes listed below must adhere to the additional restrictions as noted
herein: |
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| **BGF |
Page Number: 21 |
| BLOWN GAS FLAT
* Maximum 2 valves per cylinder
* Gasoline only |
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| **PGF |
Page Number: 21 |
| * Naturally aspirated (unblown)
* Maximum 500 cubic inch limit
* Maximum 2 valves per cylinder
* Gasoline only |
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| **PGJ |
Page Number: 21 |
| PRO GAS JET
* Naturally aspirated (unblown)
* Maximum 500 cubic inch limit
* Maximum 2 valves per cylinder
* Gasoline only
* Pressure relief (pop-off) valve and/or ratchet device required
* No transmissions or gear reduction
boxes - jet pump must be driven one
to one (1:1) in relation to engine RPM
|
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| **PLJ |
Page Number: 21 |
| PRO LIMITED JET
* Naturally aspirated (unblown)
* Maximum 482 cubic inch limit
* Single 4 barrel carburetor
No split body carburetors
* Standard production cast intakes
No fabricated or sheet metal intakes
No welding or epoxy in intake manifolds
* Cast iron O.E.M. cylinder heads - porting
allowed. No welding or epoxy in heads
(except for necessary repairs - limited to
one intake port, one exhaust port, and
one combustion chamber per head)
* Aftermarket cast iron cylinder heads
Same restrictions as aluminum heads
* No gear drives
* No dry sumps |
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| **PLJ |
Page Number: 22 |
| * Aluminum cylinder heads
No Pro Stock type heads
Standard port and valve spacing only
No heads allowed with valve angle
greater than three (3) degrees from O.E.M.
specs. Minimal porting allowed for gasket
match and bowl blend purposes. Intake
gasket match shall not exceed one (1) inch
into port. Maximum three quarters (3/4)
inch porting allowed from valve seat inward
for bowl blending purposes.
* All heads - no titanium valves or springs
Maximum of 2 valves per cylinder
* New release heads must be approved by tech
* O.E.M. means mass produced, factory
installed on massed produced vehicles
and not available over the counter only.
* Intake or exhaust spacers allowed
May not exceed .500 inch thickness
* No belt driven camshafts or distributors
* Racing gasoline only
D.C. reading no greater than zero
* No nitrous oxide
* No bowtie, aluminum, or aftermarket blocks
* No transmissions or gear reduction
boxes - jet pump MUST BE DRIVEN ONE
TO ONE(1:1) IN RELation to engine RPM
|
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| UO |
Page Number: 22 |
| UNLIMITED OUTBOARD
* Rules for this class can be found in
Appendix G.
|
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| PE |
Page Number: 22 |
| PRO ELIMINATOR 8:00 - 8:99
* Rules for this class can be found in Appendix G. |
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| ME |
Page Number: 22 |
| MODIFIED ELIMINATOR 10:00 - 10:99 |
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| RR* |
Page Number: 22 |
| RIVER RACER 12:00 - 16:00
*See Appendix J |
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| Racing Classes |
Page Number: 22 |
| The above classes comprise the makeup of the racing program. A sanctioned event need not include all of the classes listed. Each of these classes, if offered, will have the same safety requirements among all member divisions or chapters. At the discretion of the sanctioning division or chapter, a minimum number of entrants may be required to constitute a class. |
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| Optional Classes |
Page Number: 22 |
| Subject to approval by the sanctioning division or chapter’s Board of Directors, the promoter may include other optional classes. |
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| Elimination of Classes |
Page Number: 22 |
| Any class that does not have an average of two boats per race for one year, or three boats per race over two years (counting only races at which the class was offered) may be eliminated from the racing program the following year. |
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|
National Drag Boat Association (NDBA)
American Drag Boat Association (ADBA Div 1)
Central States Drag Boat Association (CSDBA Div 2)
Southern Drag Boat Association (SDBA Div 3)
St Louis Drag Boat Association (SLDBA Div 4)
Columbia Drag Boat Association (CDBA)
Delaware Drag Boat Association (DVDRC)
International Hot Boat Association (IHBA)
Kentuckey Drag Boat Association (KDBA)
National Jet Boat Association (NJBA)
Outboard Drag Boat Association (ODBA)
Victorian Drag Boat Club (VDBC) |