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SFI Question

Posted: Tue Feb 28, 2012 5:33 am
by Bruce69Camaro
Correct me if I'm wrong, but on cars running 10.99 or faster, you are required to have a SFI transmission shield and on cars running 9.99 or faster, you are required to have a SFI flexplate and flexplate shield.

I don't get this?

I would think it would be the opposite.

Re: SFI Question

Posted: Tue Feb 28, 2012 7:59 am
by spib
at 10.99 or faster you have to have all 3 I believe not 9.99

Re: SFI Question

Posted: Tue Feb 28, 2012 8:10 am
by Bruce69Camaro
According to what I saw it was 10.99 for the transmission shield unless you go faster the 135mph then you are required to have all three.

Re: SFI Question

Posted: Tue Feb 28, 2012 10:59 pm
by spib
you are right I have over sfi crap for my mid 10's


TRANSMISSION, Automatic
Spring-loaded, positive reverse lockout device and functional
neutral safety switch mandatory. Transmission shield meeting SFI
Spec 4.1 mandatory on any car running 10.99 (*6.99) or quicker or
any car exceeding 135 mph. Automatic transmission flexplate
meeting SFI Spec 29.1 and flexplate shield meeting SFI Spec 30.1
mandatory on cars running 9.99 (*6.39) or quicker or any car
exceeding 135 mph. See General Regulations 2:12, 2:14.

Re: SFI Question

Posted: Tue Feb 28, 2012 11:00 pm
by spib
I read this wrong a few yrs ago sorry

Re: SFI Question

Posted: Wed Feb 29, 2012 4:49 am
by Bruce69Camaro
I guess that rule just doesn't make sense to me. I would think the flywheel and shield would be before the tranny shield, but then again???