Street Stock Rules For 2020 Season Released For Stafford Speedway

(Press release from Stafford Speedway)

Street Stock division action at Stafford Speedway (Photo: Fran Lawlor/RaceDayCT)

Stafford Speedway Street Stock rules for the 2020 season have officially been released and are now available at  Changes to the rule book include removal of the AVM (restrictor) plate, updated rear gear rule, option to use rear disc brakes, and Ford 9” rear.  Stafford officials have implemented the changes to ensure the long term success of the division.

2020 Street Stock Rule Book Excerpts:

We have removed the AVM plate from our Street Stock division for 2020. This necessitates a rear gear change as well. SMS reserves the right to modify those and all associated rules throughout the season as necessary to ensure safe and fair competition.

20F- 10.6 REAR AXLE – The unaltered Stock OEM unit for your year/make/model or a Ford nine inch (9”) non-floater must be used. 

GEAR RULE – The 305 / 302 engine package must use a numerical gear ratio of 3.23 in the rear end housing. 

OP-20F- 10.6 GEAR RULE – SMS 602 Crate Engine-

You may run a 3.23 numerical rear gear along with a 1.50 2nd gear ratio transmission, or you may use a 4.56 numerical rear gear with a 1:1 3rd gear ratio transmission. No other options or combinations are permitted.

Number registration for the 2020 race season at Stafford Speedway is now open. Team can secure their number registration by contacting the track office or online on the number registration page. For any questions please contact the track office or reach out via email or Facebook

Rule Book Online Access

2020 Street Stock Rules

2020 Street Stock 302/305 Engine Rules

For more information, contact the Stafford Motor Speedway track office at 860-684-2783 or visit us on the web at

(Press release from Stafford Speedway)


  1. CajunHotstick says

    Holy crap no plates?! The ole 305 would sing a pretty tune like this!

  2. CajunHotstickHockey says

    Holy crap, no plates?! Somebody build a nice 305 again and let her sing!

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