Need help finding rules.
 

Hi everyone,

Kind of an outsider to Stock and Super Stock racing so I was hoping I could get some help trying to understand where to find rules for specific classes in Super Stock. My father and I are trying to understand what the rules are for SS/PAA-1 through SS/PJA-1. As well as SS/PA-2 through SS/PJ-2. And Last SS/PAA-2 through SS/PJA-2.

We can't find these class codes in the IHRA or NHRA rule books thus we can't figure out what the rules are for thoses classes.

Any help in figuring this out would be appreciated.

Thanks,


Andrew Stirk

Re: Need help finding rules.
 

Hey Andy!

There's a section in the IHRA Rulebook under Super Stock called "Super Stock Production". Starts on page 42... http://www.mydigitalpublication.com/...on/?m=1203&l=1

SS/PAA through SS/PJA are for automatic transmissions, and SS/PAA through SS/PJA are stick cars. "-1" is for 4bbl carbs, and "-2" is for 2bbl carbs.

Give it a read, and holler back with any specific questions you might have.

Re: Need help finding rules.
 

Hey Michael,

How are ya doing? Been awhile hows things in the Carolinas?

Thanks for the information, so from what I gather then the production class is similar to the GT classes where someone could use a FAB 9 inch rear end in any combo and FWD conversions are ok?

Essentially this is like a crate motor class but for Super Stock? Which means if I had a 1968 Camaro I could run my choice of BBC 427, 454, or 502 through a single 4 barrel (if we ran -1 class) with a powerglide? and then a 9 inch for a rear end if I choose to?

The production classes only exist in IHRA. These car are not legal in the NHRA essentially?

Thanks again,

Andrew Stirk

Re: Need help finding rules.
 

They are basicly modified style motors with the limitation of the OEM stroke (+.015 allowed). No odd ball bore and stroke combos. Classes for one 4 barrel and one 2 barrel with a restrictor plate. Cubic inch to factory shipping weights. Very similar to the old modified production classes but no multi carb set ups......OK, I fixed the plus .015 wording for the perfectionists on this forum.

Re: Need help finding rules.
 

i think it's +.015 (page 115 nhra rulebook 09 under engine)
page 36 ihra rulebook 09 under engine

i could be wrong

Re: Need help finding rules.
 

Your correct. Most crank grinders go to + .013 to allow .002 safety margin for tear down Most racers and engine builders are used to saying plus .013 in general conversation. My bad.

Re: Need help finding rules.
 

Shouldn't stick cars be SS/PA.......as this shows SS/PAA in both automatic & stick

How do you figure out how to classify a Crate Motored Stocker ? Do you use Stock shipping weight and advertised HP of the crate engine ??

Re: Need help finding rules.
 

Yes mostly although some crate engines have been factored or de-rated over the years. You need to call a current IHRA tech offical or the IHRA main office to get the latest factor. Ive been away from it for over 8 years. Then its just as regular stock is classified as going to the next class up or down and figuring the min. wt and adding 170 lbs for the driver. Same deal as NHRA stock. Yes the stick classes loose the extra "A" on the class designation.

Re: Need help finding rules.
 

Sorry, cut'n'paste typo... stick is SS/PA-# through SS/PJ-#

Re: Crate Motors..... shipping weight of the 'traditional' Stocker (small blocks use small block shipping weight, big blocks use big block shipping weight), divided by the factored HP of the crate motor. http://www.ihra.com/competition/crate_motors.php

Re: Need help finding rules.
 

Andrew, some cars will cross over to a SS/Mod Class at NHRA races. SS/PAA-1 = SS/AS or SS/BM, for example. Not sure what would fit what exactly. Although, at an IHRA race several years ago, a racer with a fast SS/BS car claimed SS/PDA-1 once, and an IHRA racer told me it wasn't legal, as SS/Productin has different crank rules and stuff compared to a SS/BM. Might want to check, to be sure a crossover is legal. Also, a SS/PAA-1 (I believe) will have to pull a head for teardown, while a SS/AS, SS/AM is usually just pump-and-go (although I think at one NHRA race they were tearing down some SS/Mod cars. I heard checking bore sizes?). Again, double check with someone.