Converting 1/8 to 1/4 mile times?

Ijust ran my 94z28@ Minot N.D and ran a 8.90@80.0. Last sept(05) i ran13.82@99.0@S.I.R. I did 2 mods this year. I put on a BBK 52TB and a K+N C.A.I(which replaced a A.P.I tube) My best 60ft this year was a2.08 and last year was 2.05. My scanmaster showed 5-7 degrees of knock this year and 0 degrees last year.How do i convert 1/8 th miles to 1/4? BTW i would have run some 1/4 times this weekend but it was rained out but i will run it at the last session. Thanks for any input.

Multiply MPH by 1.25 and ET by 1.55.

I've been dragracing for 5 year now. Forget the calcs and elevation correctors. Just run it and be happy with what you get. I've weighed my car and dynoed it. If beat myself up wanting to know why I can't do what it says. Takes all the fun out of it. Just drop the hammer and have some.

Here are a couple handy conversion sites.

If you scroll down on this page there is a 1/8 to 1/4 conversion table.
http://www.ondoperformance.com/calculators.html

http://www.camaroz28.com/services/calcs/