Heavyweight Class | Rules

Class Type
1/4 mile Heads-Up Racing No Time
Class Index
None
VEHICLES ALLOWED
- Any 2003 and up LX/LC/LD Charger, Magnum, 300, Challenger, Jeep, Dodge/Ram Truck/Durango
- All Drag Pak/Clone vehicles 2008 and up
- Any year Chrysler, Dodge, Plymouth, Jeep, AMC powered by a GEN III Hemi Engine
- Any Other NON-Chrysler manufactured DOOR EQUIPPED* vehicle powered with a GEN III Hemi Engine (change effective 5/1/21)*
Engines Allowed
- 2003+ GEN III HEMI
- Modern V-10 Chrysler Engine in drag pak only
Min Weight limits
- 4200 lbs with driver
- +200 lbs for dual type power adder (OEM IHI supercharger exempt)
- +100 for aftermarket forced induction
- +200 for twin turbo or compound boost
- +100 for non IRS suspension
- -200 for nitrous only powered
- -100 for any 17 inch rear tire, 275/60r15 or 28 x 10.5 inch No W slick tire.
- N/A cars 3000 lbs with driver
New weight rules for 2023 in red
Old weight rules below ⬇️
- 4200 lbs – OEM supercharger (regardless of configuration – exempt from dual type power adder weight penalty) **rule change effective 6/17/22
- 4100 lbs – nitrous only **rule change effective 6/17/22
- 4300 lbs – aftermarket supercharger/ single turbo
- 4500 lbs – dual type regardless of config (boost plus nitrous)
- 4500 lbs – Twin Turbo or compound boost
- 3000 lbs – N/A
**All weights are with driver.
NOT Allowed Equipment
NOTES
-
- oil retention device required
- 2nd class will be bracket
- Drivers will cross over the scales after each pass during elims to ensure weight is verified by their competitor AND MSHS STAFF. **Cars cannot go to the pits after a pass prior to weight verification. Passing the scales after a pass during elims results in DISQUALIFICATION FROM THAT CLASS**
- .400 Pro Tree
- Random pairing with poker chip draw
- **Forced Induction cars with Nitrous Systems installed will be treated as dual type power adder unless the bottle is removed and nitrous line is disconnected from Nitrous Solenoid. NO EXCEPTIONS.** This will be annotated on initial weigh in and enforced each round.
- **Cars that do not make weight for their configuration during elims are DISQUALIFIED FROM THAT CLASS**
