IHRA classification guide

[ALMACK]

Speaking of IHRA Pure Stock, (of which I want to run)... I see where the rulebook says you have to have the stock trans for yr. and h.p. claimed.
The way I understand the wording is that the automatic is restricted to a shift kit and convertor only.

However, the wording on the manual trans does not list any internal restrictions. Does that mean I could run a fully race prepped T-5 in my 95 Mustang GT ...as long as the outside of the trans appears stock for my 95 ?

Just curious...not that a 14 sec. car needs a full tilt T-5

[BMFRACING]

Thinking of running my 1993 mustang in crate motor. What class would the 340 hp 302 be in, or the 450 hp 347. Thanks Bob

[Chris1529]

bmf racing, you'll need to let us know what body style you have.

almack, I think that is correct.

[BMFRACING]

I have 93 lx hatch. thanks Bob

[Chris1529]

per the NHRA classification guide, the shipping weight of your car is 2968#.

for the 347/450, IHRA rates it at 430HP.

2968/430 = 6.90 lb/hp. which makes it a B/CM (6.5-6.99 lb/hp)
your race weight for B is 6.5x430+170( for driver) = 2965#
you could run A/CM or C/CM by subtracting or adding 215#. I doubt you could get it light enough to run A though.

I am not sure how much IHRA rates the 340HP 302.
assuming it is 340, 2968/340 = 8.72 which is F/CM (8.5-8.99) it may only be rated at 320 though. I don't have my lates drag review with me.

You can see the rulebook, class indexes, etc. on IHRA.com

[BMFRACING]

Chris thank you. Not sure which way i will go. Thanks again Bob