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SFI chassis specs

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samotorsport:
Hey guys , I am looking for the latest SFI chassis rules , anybody has the full booklet as a PDF and willing to share with me ?
Thanks in advance
Sam

Paul New:
They are $38 at https://sfifoundation.com/drag-racing-chassis/

And there are many to choose from
DRAGSTERS
SFI Spec 2.1C Rear Engine Dragster (Top Alcohol/Methanol) – 5.99 Seconds & Quicker
Effective Date: December 3, 2021
SFI Spec 2.2D Front Engine Dragster – 5.99 Seconds & Quicker
Effective Date: December 3, 2021
SFI Spec 2.3U Rear Engine Dragster (Top Fuel) – 4.99 Seconds & Quicker
Effective Date: May 7, 2021
SFI Spec 2.4D Front Engine Dragster – 6.00 to 7.49 Seconds
Effective Date: December 3, 2021
SFI Spec 2.5E Rear Engine Dragster – 6.00 to 7.49 Seconds
Effective Date: December 3, 2021
SFI Spec 2.6C Front Engine Dragster – 7.50 Seconds & Slower
Effective Date: December 3, 2021
SFI Spec 2.7E Rear Engine Dragster – 7.50 Seconds & Slower
Effective Date: December 3, 2021

FUNNY CARS, ALTEREDS AND ROADSTERS
SFI Spec 10.1G Funny Car Roll Cage (Alcohol, Advanced ET, Nostalgia, etc.)
Effective Date: December 3, 2021
SFI Spec 10.2A Altered Car Roll Cage – 6.00 to 7.49 Seconds
Effective Date: December 3, 2021
SFI Spec 10.3B Altered and Funny Car Roll Cage – 7.50 Seconds & Slower
Effective Date: December 3, 2021
SFI Spec 10.4B Side Steer Roadster Roll Cage – 7.50 Seconds & Slower
Effective Date: December 3, 2021
SFI Spec 10.5A Nitro Fuel Funny Car Chassis – 4.99 Seconds & Quicker
Effective Date: October 31, 2013 (edited Oct. 1, 2014)

FULL BODIED CARS
SFI Spec 25.1K Full Bodied Car Tube Chassis – 7.49 Seconds & Quicker; 2,800 lbs. Maximum
Effective Date: July 2, 2021
SFI Spec 25.2E Full Bodied Car Tube Chassis – 6.00 to 7.49 Seconds ET; 3,200 lbs. Maximum
Effective Date: July 2, 2021
SFI Spec 25.3D Full Bodied Car with Aftermarket Body Shell and Tube Frame, OEM Body Shell and OEM Frame with OEM or Modified Floorpan and Firewall, or Uni-Body with OEM or
Modified Floorpan and Firewall Roll Cage – 6.50 to 7.49 Seconds ET; 3,600 lbs. Maximum
Effective Date: July 2, 2021
SFI Spec 25.4D Full Bodied Car Tube Chassis – 7.50 to 8.49 Seconds; 3,600 lbs. Maximum
Effective Date: July 2, 2021
SFI Spec 25.5E Full Bodied Car Stock or Modified/OEM Floorpan and Firewall with OEM Frame or Uni-Body Construction – 7.50 to 8.49 Seconds; 3,600 lbs. Maximum
Effective Date: July 2, 2021
SFI Spec 25.6A Full Bodied Car Stock / Truck or Modified/OEM Floorpan and Firewall with OEM Frame or Uni-Body Construction – 7.99 to 8.49 Seconds; 5,000 lbs. Maximum
Effective Date: July 2, 2021

samotorsport:
Ah , thanks a lot, i didn t know this .
So I will go and order them there.
I will also check if there is a specific one for jr dragsters.

Thank you very much.
Best regards
Sam

Finnish Fireball:
Has any of you guys recerted your chassis this year? I was told there's a new amendment in SFI 2.6C forcing to change this cage center bar to oval pipe??? Doesn't make any sence to me if it's true. Cutting off the old one and welding in a thinner piece will only weaken the structure in my opinion. Not to mention how the previous welds have hardened the pipe.

gordon:
Just got mine recerted for (6.00 and slower) not sure of that change, as mine has always been the oval/aero cross section.

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