What is Considered stock?

[wnt2gofst]

Ok, so some of us had a huge discussion in the chat area. We was talking about what is stock and what isn't. We was talking about taking stock exhaust manifolds and porting them. Some say that is still stock. While others say they are not stock any more, you ported them. Same thinng went for a ported intake, or exhaust that has been modified by taking deleting mid muffler and resonators.

So, the question is this... If you port STOCK exhaust manifolds, is your car still considered stock?

[WickedMom]

Ported exhaust manifold & High flow cats
Ported intake manifold
deleted mid muffler and resonators

ALL are modifications and make a vehicles powertrain not stock.

[parish8]

seems like a no brainer. not stock at all.

[Fatdaddy]

Ported exhaust manifold & High flow cats
Ported intake manifold
deleted mid muffler and resonators

ALL are modifications and make a vehicles powertrain not stock.

So too then are replaced spark plugs, wires, air filters and tires. If your vehicle has any of these items your powertrain is not stock.

[wnt2gofst]

If you change the kind of tires, pluges ect then no it isnt stock anymore. This is same thing i think when i see people say they ran this time in the 1/4 mile on stock tires but they have KDWs or Nittos. Last time i checked none of our cars came with these tires. So they arent stock.

[JPEGXP]

I have just the Corsa on my car. I do refer to it as "stock"

[wnt2gofst]

I have just the Corsa on my car. I do refer to it as "stock"

But it isnt...the car didnt come from the factory this way...

[Fatdaddy]

If you change the kind of tires, pluges ect then no it isnt stock anymore. This is same thing i think when i see peopel say they ran this time in the 1/4 mile on stock tires but they have KDWs or Nittos. Last time i checked none of our cars came with these tires. So they arent stock.

But if they came with them and you adjusted the pressure outside of the factory range, that means you are no longer stock right?

[parish8]

i see 2 votes for "stock". who voted that way and why?

[parish8]

But if they came with them and you adjusted the pressure outside of the factory range, that means you are no longer stock right?

tire pressure is a good example of a grey area that most would still consider stock but cat backs? tires? ported intakes?

[wnt2gofst]

But if they came with them and you adjusted the pressure outside of the factory range, that means you are no longer stock right?

Parish said it best that is a grey area...But if want to be that anal no it wouldnt be stock cs you changed it. If porting it is still stock then a tune is no diff. You only changing the settings still same computer..

[wnt2gofst]

i see 2 votes for "stock". who voted that way and why?

They saying it stock cs using stock parts..

[GeorgeInNePa]

Why is it important?

[JPEGXP]

But it isnt...the car didnt come from the factory this way...

From a technical standpoint you're correct. In my mind however, I wasn't purchasing the Corsa with power in mind, just was looking for nice sound.

[WickedMom]

Why is it important?
It's just a discussion... At what point is a modified part no longer stock?
Can a car with ported manifolds, HFCs and x pipe submit a time slip for fastest stock G8? (because it looks kinda stock?)


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[JPEGXP]

At what point is a modified part no longer stock?


It's almost an oxymoron! lol

[Fatdaddy]

i see 2 votes for "stock". who voted that way and why?

I did. Here is why:

If it is an unmodified factory component as supplied when new, it is a stock piece. If it is a stock piece that has been modified but still falls within factory parameters, it's stock piece - modified but still stock. If it is modified well beyond factory parameters, it is not stock. e.g. If you port matched your intake, I say its stock. If you port matched it, gutted it, and epoxied new pieces to it, its not stock.

Just because it is slightly modified doesn't automatically mean it is no longer stock.

[WickedMom]

It's almost an oxymoron! lol
Kinda my point


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[parish8]

I did. Here is why:

Just because it is slightly modified doesn't automatically mean it is no longer stock.

that doesnt make any sence to me. "slightly modified" is no longer stock.

[kyllekkc]

i wouldn't consider it stock but a ported stock intake

[Fatdaddy]

that doesnt make any sence to me. "slightly modified" is no longer stock.

So then by your definition you would consider 'shaved factory tires' no longer stock?

[parish8]

So then by your definition you would consider 'shaved factory tires' no longer stock?

do people shave crappy stock tires?

i see no issue with telling people exactly what you have. no need to be tricky. for example saying a zr1 can run 10's stock is missleading. saying a drag radial only zr1 can run 10's isn't really that much harder to spit out and now people know what is up.

[G8GT594]

seems like a no brainer. not stock at all.

This. Not stock.

[Fatdaddy]

do people shave crappy stock tires?

i see no issue with telling people exactly what you have. no need to be tricky. for example saying a zr1 can run 10's stock is missleading. saying a drag radial only zr1 can run 10's isn't really that much harder to spit out and now people know what is up.

Come on. You are doing the same thing as others have. You didn't answer my question. I have no issues with telling people what I have. The issue seems to be that some people have a problem with describing a mildly modified factory piece as 'stock'.

If I disassembled and blueprinted a factory engine using all factory parts as supplied when new, I would say it is 'stock'. Others would cry foul and say it is not stock. The argument hinges on what the definition of 'stock' is. I say factory pieces, even slightly modified are stock. No one has argued in favor of wildly modded 'stock' pieces (my intake manifold example) as qualifying. What most are saying is that any modification to a stock piece is no longer 'stock'. So that would mean tires with pressures outside of factory range equals 'modified' or not 'stock'. Synthetic oil not originally supplied equals modified or not 'stock'. Increasing the gain on the factory amplifier equals modified or not 'stock'. Changing the wiper blades equals modified or not 'stock'. Note that I'm not copping out to 'gray' areas.

I'm saying that a blueprinted or optimized factory piece still qualifies as stock. A highly modded factory piece or aftermarket does not. By that definition, oil is oil. Synthetic oil can still be stock if it meets the original spec. Shaved factory tires are stock (whether anybody does so is not the point). Port matched factory intake is stock. If that is not the case, then I guess I have to acknowledge that my factory but indexed spark plugs mean my car is no longer 'stock' because I swapped them around even though they came with the car.

[gearhead455]

This question is a no brainer,ANY part you replace on your car with a different part # than the original part that came on the car, it is no longer stock.

Any modification you do of a factory part on your car, is no longer stock.

Why even ask such a simple question? lol

[-Ray-]

No one wins in this thread.
No longer stock.

[parish8]

Come on. You are doing the same thing as others have. You didn't answer my question. I have no issues with telling people what I have. The issue seems to be that some people have a problem with describing a mildly modified factory piece as 'stock'.

If I disassembled and blueprinted a factory engine using all factory parts as supplied when new, I would say it is 'stock'. Others would cry foul and say it is not stock. The argument hinges on what the definition of 'stock' is. I say factory pieces, even slightly modified are stock. No one has argued in favor of wildly modded 'stock' pieces (my intake manifold example) as qualifying. What most are saying is that any modification to a stock piece is no longer 'stock'. So that would mean tires with pressures outside of factory range equals 'modified' or not 'stock'. Synthetic oil not originally supplied equals modified or not 'stock'. Increasing the gain on the factory amplifier equals modified or not 'stock'. Changing the wiper blades equals modified or not 'stock'. Note that I'm not copping out to 'gray' areas.

I'm saying that a blueprinted or optimized factory piece still qualifies as stock. A highly modded factory piece or aftermarket does not. By that definition, oil is oil. Synthetic oil can still be stock if it meets the original spec. Shaved factory tires are stock (whether anybody does so is not the point). Port matched factory intake is stock. If that is not the case, then I guess I have to acknowledge that my factory but indexed spark plugs mean my car is no longer 'stock' because I swapped them around even though they came with the car.

there are going to be some things that are a grey area and that area will be diferent for everyone. simple things like air pressure and taking out the spare tire should not keep you from beeing on a "stock" list. this is what we are talking about right, getting on the quickest stock list? there is no way porting an intake could be called stock. or pulling off parts of your exhaust system.

[Fatdaddy]

No one wins in this thread.
No longer stock.

^This. I concede. The moment you put premium gas in your car (it calls for regular), your car is no longer stock.

[wnt2gofst]

there are going to be some things that are a grey area and that area will be diferent for everyone. simple things like air pressure and taking out the spare tire should not keep you from beeing on a "stock" list. this is what we are talking about right, getting on the quickest stock list? there is no way porting an intake could be called stock. or pulling off parts of your exhaust system.

It isn't even about being about quickest stock list. Its trying to say you are stock when you have done such work as you mentioned. That was vthe main point we was trying to make. Ported intake, manifolds, removing cats or resenators, changing tires is not stock. No matter how you try to wiggle around it.

[Devilish34]

my car is very stock looking on the outside

[bracketracer]

It's funny how the definition of "stock" can vary so much. There are racing series out there that pretty much allow anything as long as it appears stock. To me "stock" is a vehicle with factory original, or equivalent service replacement parts, that have not been irreversably changed in any way. From the examples above:

ported intakes (exhaust or intake) - NOT STOCK, change permanently increased airflow, not easily returned to original
modified exhaust (replaced or parts deleted) - NOT STOCK, the only exception would be if the whole system, or parts, are replaced with comparable stock parts due to damage
plugs, wires, filters, etc - STOCK, IF they are comparable in size, capacity, etc to OEM parts. Cooler plugs, K&N (or other aftermarket free-flow) filters, and thicker wires ARE NOT STOCK
tires - STOCK, IF they are Goodyear RS-As, or Bridgestone Potenzas. Drag Radials, slicks, or stickier better performing tires are NOT STOCK.

Tire pressure is a good grey area. I feel that adjusting tire pressure is allowed because it can be returned to factory levels in seconds with a compressor. Plus tire pressures can change on it's own and has to be adjusted to stay in proper ranges. I always disclose that I adjust my pressures at the track. Another grey area is removing stuff (spare tire, seats, etc) to lighten a car at the track. I don't do any weight reduction at the track, but some do. I know folks who remove the passenger seat, rear seats, etc., and this is iffy to me. They can return it to original in short order, but as the car went down the track it wasn't like that. Another grey area is removal of the air filter. I have always done this on the track. Many folks tell me it does nothing, and that I risk the engine ingesting something, but I am a creature of habit so I continue the 20 year tradition. In less than 10 seconds, I can return my stock air filter to my stock unmodified airbox to drive home.

You will likely never get a concensus on many of the "grey areas" but some things are obvious. Just my 2 cents worth.

[GeorgeInNePa]

This is why we have one 1/4 list...

[wnt2gofst]

This is why we have one 1/4 list...

This is true...But if i guy says i am stock..then he really has a ported intake, ported exhaust manifolds its hard to tell if he was really stock less he post some crazy 1/4 mile time saying he stock or unless some one knows he isnt stock.

[norm8332]

Stock was my last car. Not stock. Maybe a better argument is the STD dyno correction some shops use vs the more conservative SAE correction.

[r33pwrd]

simple if the parts on the car where not offered from Pontiac in the same form as they sit on the car than it is not stock :)

['02 ws6]

I consider stock a term defined by general power adding bolt-ons not including any variation of plugs/wires, weight reduction, and even extending to tires. Once you delve into exhaust, etc...you're no longer "stock", CAI is a 50/50 argument as most people consider a car with only CAI to still be termed stock. Now to use "bone stock" means nothing has been altered from its original form. That's my opinion.

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[rmcrom]

A car with modifications isn't stock.
A part with modifications isn't stock.

[MANOFSTEEL69]

Stock is how it rolls out of the plant. Period.

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[mi04se1]

My car is stock

[wnt2gofst]

My car is stock

Sorry it really isnt..but nice try...lol....VMS ecm/tcm tune,Mach Shorty, Solo HFC's,Rotofab cai & radiator cover

[616 of 933]

would adding a line lock be stock? If not oh well I need more mods

[-Ray-]

I had stock wheels, then added Holden wheel caps. Oh well, not stock any more.

[wnt2gofst]

I had stock wheels, then added Holden wheel caps. Oh well, not stock any more.

I think you be ok Ray!....LOL..i say they are still stock wheels...LOL

[MGM GT]

Stock is how it rolls out of the plant. Period.

Exactly! /thread

[wreckwriter]

I agree, stock is stock. Any mods at all is not stock.