Theres been some discussion going on in the "Fastest Stock Duramaxes" thread about what exactly makes a "stock" truck "stock" for racing purposes.

The original rules we came up with were as follows:
stock motor, stock single CP3, stock injectors, stock turbo, etc. in a stock bodied truck on #2 only


We could eliminate the "standard" items that 99% of people put on their trucks in order to drag race, including:

Exhaust
Intake
Tuner (EFI Live or handheld)
Lift pump
Built transmission

Then when it comes to suspension, we could eliminate the items that most people use, including:

Spring clamps and/or Caltracs (or other traction bar)
tie rod sleeves/centerlink

Tires could be an issue, since some of the Fastest list used drag radials or slicks. I'll add that to the list for the heck of it.

Weight reduction is really a grey area, what with all the different configurations of trucks, all with different starting weights. Theres also the added variable of how people customize their trucks, with heavier bumpers, wheels, etc. In this case, we should probably treat truck weight as "run what you brung" item. If you're industrious and remove weight, you get the edge.

The poll is multiple choice, so check off what you think should be added to the original rules, and we'll go from there. If Ive forgotten something, please let me know.

Other than what I voted for Tom I'd say yes to a BD but no to full on manifold/uppipes but could be swayed either way. Same with nozzles. I only did mine to reduce the PW; I have the Pulse Width reduced to near stock .

In my mind I think cost should come into play a little. I can add nozzles for less than what I would pay for up-pipes and a downpipe. So I don't see how you can allow larger up-pipes ect, and not larger injectors. Since, to me, the only reason to try and make "stock" stuff fast is to save money, over buying internals/turbos. Just something to think about...

Stock is stock motor, I think even an aftermarket air-filter / exhaust = no longer stock. Drag tires are stock, they do not increase your power in any way. Tie rod sleeevs are also a 'stock' item since they're just there to keep parts from breaking.

IMO stock is a stock Turbo (no modded stock Turbo) stock cp3 (no mods to pump or regulator) stock injectors, and number 2 only in a production truck (the truck the motor came in). Anything you add out side of this is really just lowering egt's or helping to get the power to the ground.

IMO stock is a stock Turbo (no modded stock Turbo) stock cp3 (no mods to pump or regulator) stock injectors, and number 2 only in a production truck (the truck the motor came in). Anything you add out side of this is really just lowering egt's or helping to get the power to the ground.
X2 I have to agree.

I don't agree with the drag tires you don't daily drive on them no dual cp3's or stroked out singles. Everything else would fly with me

I don't agree with the drag tires you don't daily drive on them no dual cp3's or stroked out singles. Everything else would fly with me

Along the tire lines. Using a set of tires even if they are drag radials or cheater slicks while at the track is the same as using a set of tires specifically for sled pulling. Its all about setting up your truck for what your doing.

Have you guys noticed our separate opinions follow along the same lines to what we've each done to our trucks? Interesting viewpoints so far. I dont think we'll ever agree, just have to find a happy medium.

I always figured Buck and Jess's truck set the "standard" for what we could do, since their's is the time we're all shooting for.
They ran: (and Im going off memory and anecdotal evidence)
slicks
modded cp3 (I think just the reg and gearpump...no WD or II stroker)
20 or 30% injectors (depends on who you talk to)
I think (dont quote me) they also had a TTS downpipe added to the exhaust
other than that, I believe it was as stock as the rest of us are. :)

Since manifolds and uppipes werent invented back then, the Spruills couldnt have run them...but Id bet my next paycheck they would've if they could've. It'd be silly not to. So we'll have to come to grips with those.
Rick was running manifolds/pipes on his 12.27 passes (they are his parts after all), and he was also running slicks.

Tom, we are running dot approved radials. :)

My opinion is anything done to the CP3 should be off limits. I also think the turbo itself should be left alone, but modifying the intake horn like the LB7 guys are doing or swapping the LBZ mouthpiece onto an LLY should be allowed. Also, internals should be stock. Anything else, game on. I have yet to hear a valid argument for why bigger injectors shouldn't be allowed, but other than a built motor or dual CP3s, it is the least popular. Anyone who is against it care to explain why they are?

Tom, we are running dot approved radials. :)
Shouldnt that be the ;) smiley? Drag radials are more slick than street tire, and I wish I would have been able to run them last year. You wouldnt have caught me. :)

Have you guys noticed our separate opinions follow along the same lines to what we've each done to our trucks?

That's always the way it goes... I think its called the "sled-puller effect".):h

Along the tire lines. Using a set of tires even if they are drag radials or cheater slicks while at the track is the same as using a set of tires specifically for sled pulling. Its all about setting up your truck for what your doing.


I agree with that a little but when you show up to a sled pull with your 500hp stock turbo truck you more than likely drove it there on some bfg's, mickey thompson or some other mud/AT tire that is rated for the truck and to be driven on the highway and you should get X miles out of them.

I do agree it's all about setup for what your doing i just don't agree that drag/slicks should be aloud in the stock 25 list as for modded reg's and port matched gear pumps it's so easy to do it your self why not

I do agree it's all about setup for what your doing i just don't agree that drag/slicks should be aloud in the stock 25 list as for modded reg's and port matched gear pumps it's so easy to do it your self why notYou you can pull a CP3 and modify it, but you can't change tires? :confused:

You you can pull a CP3 and modify it, but you can't change tires? :confused:

Might as well let built motors in as long as they have a stock turbo stock injectors and single stock cp3 that wouldn't be any different than DR/slicks rods and pistons studs new bearings and high volume oil pumps don't add any more HP :D

What does a modded reg really give you? about 10hp
Now what does some DR's/slicks do for you? one hell of a 60 which makes all the difference when it comes to racing it also in my opinion takes out some of the skill in driving and knocks out a good run constantly i don't know about you but i'll take them over 10hp any day ;)

For this category it's was more impressive to do it on something you daily drive :D

Might as well let built motors in as long as they have a stock turbo stock injectors and single stock cp3 that wouldn't be any different than DR/slicks rods and pistons studs new bearings and high volume oil pumps don't add any more HP :D

What does a modded reg really give you? about 10hp
Now what does some DR's/slicks do for you? one hell of a 60 which makes all the difference when it comes to racing it also in my opinion takes out some of the skill in driving and knocks out a good run constantly i don't know about you but i'll take them over 10hp any day ;)

For this category it's was more impressive to do it on something you daily drive :D

Hell to the yeah

everyone uses their personal truck as a guide for this thing. i think only the guys running the exact mods in my sig are allowed to be apart of the competition. ;)

):h

My truck is in no way shape or form considered stock, so I feel my opinion is pretty objective as I don't have a dog in the hunt. I think that truck setup should be no holds barred as long as the leaf springs are left in place in the back and the torsion bars in the front. Want to pull weight? Go for it. Want to run slicks? Knock yourself out. Want to drop $500 in shocks? Give her hell. Cal tracs, spring clamps, steering mods, etc. Whatever should be allowed.

As for the engine, my personal opinion is the turbo is the limiting factor on airflow, and it should remain in stock form, untouched. Anything that bolts to it, intake, mouthpiece, CAC tubes, and intercooler should be allowed. On the hot side, manifolds/headers, up-pipes, down pipe, exhaust should all be good to go. Fueling is limited by the supply coming from the CP3 and should also remain stock, untouched. I don't see why any modifications done to anything else fuel system related shouldn't be allowed because they will not change how much fuel the CP3 will flow.

Don't the LBZ cp3 pumps flow more stock then an LLY or LB7?

Yes they do

I agree with Josh, but I would still consider minor mods to CP3 and turbo to be Stockish.

Don't the LBZ cp3 pumps flow more stock then an LLY or LB7?

Yes they do and i'm glade you pointed that out best thing to do is go out and get your self a lbz/lmm pump to put in your lb7/lly or if you don't have the coin get a lbz/lmm reg it will help and shouldn't be no problem it's a stock GM part :)

Have you guys noticed our separate opinions follow along the same lines to what we've each done to our trucks? Interesting viewpoints so far. I dont think we'll ever agree, just have to find a happy medium.

I always figured Buck and Jess's truck set the "standard" for what we could do, since their's is the time we're all shooting for.
They ran: (and Im going off memory and anecdotal evidence)
slicks
modded cp3 (I think just the reg and gearpump...no WD or II stroker)
20 or 30% injectors (depends on who you talk to)
I think (dont quote me) they also had a TTS downpipe added to the exhaust
other than that, I believe it was as stock as the rest of us are. :)

Since manifolds and uppipes werent invented back then, the Spruills couldnt have run them...but Id bet my next paycheck they would've if they could've. It'd be silly not to. So we'll have to come to grips with those.
Rick was running manifolds/pipes on his 12.27 passes (they are his parts after all), and he was also running slicks.please take us off the list. you guys have pmed us and asked questions about a pass that was made years prior to the question being asked. here are some things to consider, the tires were cheater slicks dot approved. we tried some early mooded cp3 pumps and they yielded no more results than extra fuel being forced into the the back side of the cp3. injectors were not needed until dual fulers became available.with Steve's tuning we were already maxing out the duration.good luck on whatever you guys decide aas to wat makes a truck truley stock. havnet been there in a while and have no plans to go back... goodluck to those shooting for the new number 1 whomever it is!!!

Didnt mean any harm with that post, sorry if it came off that way.

I don't agree with the drag tires you don't daily drive on them no dual cp3's or stroked out singles. Everything else would fly with me

Technically, you can drive drag radials on the street but you would be replacing $900 in tires every 2000 miles.

My truck is in no way shape or form considered stock, so I feel my opinion is pretty objective as I don't have a dog in the hunt. I think that truck setup should be no holds barred as long as the leaf springs are left in place in the back and the torsion bars in the front. Want to pull weight? Go for it. Want to run slicks? Knock yourself out. Want to drop $500 in shocks? Give her hell. Cal tracs, spring clamps, steering mods, etc. Whatever should be allowed.

As for the engine, my personal opinion is the turbo is the limiting factor on airflow, and it should remain in stock form, untouched. Anything that bolts to it, intake, mouthpiece, CAC tubes, and intercooler should be allowed. On the hot side, manifolds/headers, up-pipes, down pipe, exhaust should all be good to go. Fueling is limited by the supply coming from the CP3 and should also remain stock, untouched. I don't see why any modifications done to anything else fuel system related shouldn't be allowed because they will not change how much fuel the CP3 will flow.

I agree with Josh here.

However, swapping in a LBZ or LMM reg or CP3 is still fair IMO because it is still a stock part. Its no different than changing to a LBZ mouthpiece on a LLY.

I dont think there will ever be a happy medium for everyone. Not to mention we all race at different tracks around the country in different weather conditions and at varying altitudes.

One could also say the truck with the most MPH is the "fastest" as this is the true tale of horsepower in drag racing. We could also say the fastest 1/8 mile time is something to brag about as the 60' times are probably the most impressive of the bunch.

Maybe our "stock turbo" list could include all the details of the vehicles and let others be the judge of where the "fastest truck" lies in the rankings. In one persons mind the guy that shows up to the local strip with a set of 285 BFG A/T's and a fuel transfer tank for the tractor, laying down a 12.8 may be more impressive than a reg cab LBZ with slicks and weighs 6000# running 12.3's

Its all a matter of opinion:confuzeld

Guess I'm carrying the transfer tank to TS then, lol

I agree with Josh here.

However, swapping in a LBZ or LMM reg or CP3 is still fair IMO because it is still a stock part. Its no different than changing to a LBZ mouthpiece on a LLY.

I dont think there will ever be a happy medium for everyone. Not to mention we all race at different tracks around the country in different weather conditions and at varying altitudes.

One could also say the truck with the most MPH is the "fastest" as this is the true tale of horsepower in drag racing. We could also say the fastest 1/8 mile time is something to brag about as the 60' times are probably the most impressive of the bunch.

Maybe our "stock turbo" list could include all the details of the vehicles and let others be the judge of where the "fastest truck" lies in the rankings. In one persons mind the guy that shows up to the local strip with a set of 285 BFG A/T's and a fuel transfer tank for the tractor, laying down a 12.8 may be more impressive than a reg cab LBZ with slicks and weighs 6000# running 12.3's

Its all a matter of opinion:confuzeld

I'll second this opinion. As long as its got a stock charger on it, have at it. List everything done to the truck, and let everyone be the judge. If someone wants to put a gigantic wheel in an IHI charger, and build a motor to get to the top of some internet list, then more power to 'em. I bet that if someone wants to be on top of the list that bad they will lie about whatever mods they have anyway...

I'd say stock turbo and make 50 passes within a two month period. I think bolt on should all be allowed ie headers, dual fuelers, intakes, nitrous etc. I view a stock truck as something that is going to drive to the drag strip run 5 or 6 times go home hook on to a trailer and haul a bobcat or something. Just my thoughts. This same argument is in sled pulling, makes me mad most of the time.