Newbie wants to race... But what class??

[Mike Carr]

If you wanted to run Stock, there are truck classes for factory trucks. Crate Motor Stock is also an option, using one of several IHRA-approved Crate motors. Both Stock Truck and Crate Motor Stock are for 1/2 ton or smaller trucks.

From the IHRA website:

http://www.ihra.com/competition/pistons.php Accepted Replacement Pistons

http://www.ihra.com/downloads/pdf/co...ateengines.pdf

[04BlackSilverado]

Originally Posted by Mike Carr

If you wanted to run Stock, there are truck classes for factory trucks. Crate Motor Stock is also an option, using one of several IHRA-approved Crate motors. Both Stock Truck and Crate Motor Stock are for 1/2 ton or smaller trucks.

From the IHRA website:

http://www.ihra.com/competition/pistons.php Accepted Replacement Pistons

http://www.ihra.com/downloads/pdf/co...ateengines.pdf

I looked at the Crate class, and it looks like the only LS motor allowed is the LS1, which is smaller (ci wise), more expensive, and an aluminum block (again more expensive). The approved LS1 pistons are only for the smaller bore LS1 not the 4" bore LS2 or LQ9 Pistons.

I'll look more at the truck class...

[Mike Carr]

Originally Posted by 04BlackSilverado

I looked at the Crate class, and it looks like the only LS motor allowed is the LS1, which is smaller (ci wise), more expensive, and an aluminum block (again more expensive). The approved LS1 pistons are only for the smaller bore LS1 not the 4" bore LS2 or LQ9 Pistons.

I'll look more at the truck class...

Here are some people to contact, to see if an '04 Silverado is eligible for Stock. If not, most all IHRA Divisional Pro-Am races offer Box and No-Box ET bracket classes.

http://www.ihra.com/competition/index.php#contact

[04BlackSilverado]

Originally Posted by Mike Carr

Here are some people to contact, to see if an '04 Silverado is eligible for Stock. If not, most all IHRA Divisional Pro-Am races offer Box and No-Box ET bracket classes.

http://www.ihra.com/competition/index.php#contact

I know bracket racing, but what is "box" and "no-Box"?

Thanks for your time, Mike

I'll send them an e-mail

[Mike Carr]

Box allows Delay Boxes. No-Box does not allow delay boxes. Different classes go by different names at different tracks. ET 1, Super Pro, Electronics, Box are usually the same. Pro, No-Box, ET 2, Modified same thing. Most tracks (but not all IHRA Pro-Ams) offer Street ET also. Most classes have a maximum ET that you can dial-in. Box might be no slower than 11.99, No-Box might be no slower than, say, 13.99 or 14.99. Street ET is usually no ET limit, though some I have seen are now slower than 17.49, or 19.99.

[04BlackSilverado]

Originally Posted by Mike Carr

Box allows Delay Boxes. No-Box does not allow delay boxes. Different classes go by different names at different tracks. ET 1, Super Pro, Electronics, Box are usually the same. Pro, No-Box, ET 2, Modified same thing. Most tracks (but not all IHRA Pro-Ams) offer Street ET also. Most classes have a maximum ET that you can dial-in. Box might be no slower than 11.99, No-Box might be no slower than, say, 13.99 or 14.99. Street ET is usually no ET limit, though some I have seen are now slower than 17.49, or 19.99.

Oh, I got you.
I raced a Bracket at a Truck Nationals event and it was a delay box. Not a fan, I lost due to a major padding of time in the other lane and some light braking. I raced all out... I still had fun.

Wow 17.49... The truck with the 5.3L (100% Stock) got a best of 15.2 in the 1/4 @93mph

[Mike Carr]

If you're running 15's, you will be fine in Street, and maybe Pro at some races. Rules, as far as maximum/minimum allowable dial-in ET, safety, what electronic aids (Delay Box, air/electric shift, two-step, transbrake, etc) may/may not be allowed by class vary by track. Best bet before going to a race somewhere is to call or check the track website for what classes are offered, rules, etc. Also, FYI, if you come here tomorrow and don't see this thread, chances are it was moved to the "Stock and Super Stock Tech" Forum on here.

[s10stocker]

Originally Posted by 04BlackSilverado

Oh, I got you.
I raced a Bracket at a Truck Nationals event and it was a delay box. Not a fan, I lost due to a major padding of time in the other lane and some light braking. I raced all out... I still had fun.

Wow 17.49... The truck with the 5.3L (100% Stock) got a best of 15.2 in the 1/4 @93mph

If I have the HP correct the LS1 CM is rated at 350. Now if you were to run I/CM the index would be a 12.10 and you would have to weigh no less then 3670lbs. 3670 - 170 / 350 = a weight brake of 10 which is I/CM. Do you think you can make a LS1 run a 12.10 or better while keeping your truck at 3670lbs(with driver) or higher and following all the rules of SE?

Hope this helps.