Heavyweight Class | Rules Heads Up Racing N/T

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

None

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**

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