Drag Launch - 4X4 6 speed - mostly stock...

JyRO · 09-19-2009, 10:48 PM

I know this subject is beat to death, I just did a search and saw plenty of threads. But nothing quite like my scenario.

I have possibly got an up and coming grudge race. It's with my buddy, so it's just for sh1ts-n-giggles. But I still want to win, he keeps talking up his truck like it's the only thing to tow with (at 10.5 mpg around town driving like granny, I don't think so, I can do 20 mpg driving like he does). It's supposed to take place at the local 1/4 mile drag strip. He has a 1999 Chevy Crew Cab Long Bed 2WD Auto, with a 454 ... totally stock. Well sort of, he does have these chinsy little dual pipes that look like coffee stir sticks sticking straight out the back (they're so small they're laughable).

My truck, see sig, I'm running a Quadzilla XZT, RV275's, no muffler, no resonator, no silencer ring (never had a cat) so it's an absolute straight pipe, and boosting about 27 - 28 psi. I am still on the stock clutch, and plan on staying on it.

Anywho, I want to beat the guy, but I'd rather loose than break something. I just want advice how I can get as quick a launch as possible, without taking too much risk of breaking something.

I'm thinking to just launch in 2nd, 4WHI, and see if I can hold the rpms at about 1,500 rpm, and slip the clutch just barely in order to get immediate response when I let off the brakes. And then slip the clutch only enough to keep it from falling on its face.

If he beats me, he beats me. I think I'm putting maybe 320 - 330 hp & maybe 775 - 800 lb ft of torque down compared to what other guys have dyno'd with similar mods. At that, I think I'll beat him, but it may be close. I'm going to loose the spare tire & tailgate (at least) before I go to the track. All fluids & filters will be fresh. I've got a full tank now, I doubt I'll burn too much fuel before then.

Any advice how to launch without breaking anything, would be appreciated.

Should I do anything with tire pressures? BTW - If he and I did a 40 mph roll, he'd get totally humiliated,

but rowing through 4 gears, he may have a chance (what do you think?).

- JyRO

__________________
2000 Dodge Ram 2500HD 4X4 CTD 6 speed Quad Cab Long Bed. Intense Blue Sport with Agate Leather - - - Quadzilla XZT+ (EZ for sale), RV275's, boost elbow (~27 psi), stock straight piped, silencer ring removed.

CowboyCummins01 · 09-19-2009, 11:53 PM

yould get him. between foirst and second there is a small gear split that if you shift it just right you dont lose that boost build up which kills most 6 speeds. practice it at stop lights. I wouldnt do a boosted launch on a stock clutch with the quadzilla. youd be better off to run it up to 1500 rpms and slip the clucth when taking off to build boost. oncve. your turbo lights..youl leave him in the dust. I just dynoed at 355/744 with just a comp box, 5" straight pipe and Air intake and i hold my own on the streets.

__________________
2001 Ram 2500HO, NV5600, Just an ol ranch truck,362rwhp,811ft/lbs 10/24/09

Just Ledoux it-RIP Chris Ledoux

JyRO · 09-19-2009, 11:58 PM

Cowboy - When you say between first and second, do you mean between 2nd and 3rd gear? If not, do think I should launch in 1st? I wouldn't think so, but I will be trying a few things. If it ever stops raining down here in AL.

***phatboy07*** · 09-20-2009, 03:32 PM

ive got a 5spd... i use 1st gear jump when racing ppl. if just doin daily driving i use 2nd gear for start out

__________________
NEW BUILD UP.... 97 215 Pump
FUEL- 100 Plate FF, 5x14s, 4gsk, 18*
AIR- Volant CAI, 64/71/14, Porting, 4in STR8
Goodies- Studs, O-Rings, Guages, 13" Valair K/C Clutch, Black 7" Mitre

***Prowelder*** · 10-27-2009, 12:38 AM

Hey,

Just watching and learning!!!!!

I don't want to tear up my clutch either!!!!

Later,
Winslow

__________________
Black 2001 Dodge Ram 2500 Shortbed, Ext. Cab 4x4, 5.9 24 valve, TCW-3, 2-cycle oil in every tank, 54 Block!!

, NV 4500, 3.55 gears, Anti-spin, B&W Turnover Gooseneck Hitch, Autometer Ultra-Light Boost, EGT, and Fuel pressure gauges, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydraulics, Edge Comp Programer, 3" Straight pipe for now, BHAF with custom 7075 T-6 Heat Shield, AFE Torque Tube, Air Dog II DF-165 with custom cover!!

2001cumminsman · 10-29-2009, 10:50 PM

you know what you need is my old quad xzallaraider chip, 140hp lol, but i would use 2nd an turn yours up all the way your gonna slip your clutch either way, jus dont ride the clutch long your ride should build boost pretty quick youd be safe with 25psi launch i would think

__________________
01 2500, S&B, ISSPRO, FASS 150, Mach 5s, Leveled, built "Floor It" transmission, lockup switch, Quad ADR, Smarty, Super B Special, ARPs, 5in exhaust Water/Meth.... 530hp 1070 ft lbs of torque... Diesel Crew

1baddiesel · 11-03-2009, 08:38 PM

i would leave in 4hi

__________________
07 5.9 White, crew cab 3500 6spd,Sb 3600 DD 12cb 4x4,leveled, 35"Toyo Open Country's,Ranch Hand,Afe stage 2, smarty TNT/R,Dr. P stage 3,sps 62, Boost fooler. Straight piped with 8" rolled edge tip.If you see smoke then you can bet im

gears!

**Electric_Cowboy** · 11-03-2009, 08:58 PM

This has been my experience, then again I don't have a stock clutch, and I'm no guru, but...

Put her in 4HI, 2nd gear. I'd say around 1600-1800rpm. If your stock clutch isn't slipping now, then you should be ok at that rpm range. I def would not try a boosted launch with the stock clutch. Let your clutch out just slightly quicker than your used to start and finesse your shifts down the track. I kinda think it's better on parts this way. It's just all in the timing.

My first 3 times I launched in 4WD I left at 1800rpm. All 3 of those times netted me an average of 16.9 second runs. The 4th time I launched I took it to 2200rpm and got a 15.8 second run. Then I quit for the night. My next time out there I'm gonna go for a 2500rpm launch and see what that gets me. Mind you all my launches are not boosted launches either. I haven't gotten good enough to master that one yet.

You should get him though. Once your turbo lights you watch him fade from your peripherals.

__________________
CHRIS, 1999 RAM, 47RE to NV5600, South Bend OFE/Hydraulics, 6" CAT Stack, SmartyRevo, Edge Drag Comp, Silencer MIA, BHAF, 50HP Jammers, Autometer/Westach Gauges, FASS 150/95, SOVP44, 8000 HID's. THE S.O.L.I.D CREW

SSW

jmd025 · 11-03-2009, 10:52 PM

Just an FYI, with your setup, you would dyno closer to 270 hp. I used to have that setup. Trying to help out.

Josh

__________________

Louisiana Coalrollers!

VE-P-VP

My trucks are modded.

***Prowelder*** · 11-03-2009, 11:06 PM

Quote:

Originally Posted by jmd025

Just an FYI, with your setup, you would dyno closer to 270 hp. I used to have that setup. Trying to help out.

Josh

Hey,

Only 270 hp??? Stock is around 245 plus 40-50 for the RV275 injectors and 100+ for the Quadzilla?????

Not trying to argue, just wondering I as I figured he would be making more than that?!?!?!?

Thanks,
Winslow

__________________
Black 2001 Dodge Ram 2500 Shortbed, Ext. Cab 4x4, 5.9 24 valve, TCW-3, 2-cycle oil in every tank, 54 Block!!

, NV 4500, 3.55 gears, Anti-spin, B&W Turnover Gooseneck Hitch, Autometer Ultra-Light Boost, EGT, and Fuel pressure gauges, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydraulics, Edge Comp Programer, 3" Straight pipe for now, BHAF with custom 7075 T-6 Heat Shield, AFE Torque Tube, Air Dog II DF-165 with custom cover!!

Last edited by Prowelder : 11-04-2009 at 10:57 AM.

JyRO · 11-04-2009, 10:36 AM

Well, thanks for the info. The 235 hp is at the engine I would imagine. So 270 at the tires I guess is feasible. My numbers are an estimate based on real dyno runs others have done with the same or similar mods. But I really don't care about big numbers. I just want my truck to run well, for a long time.

- JyRO

**Electric_Cowboy** · 11-07-2009, 12:56 AM

Without my drag comp I only dyno'd at 279hp and 711tq. But I also had a strange limp mode defuel going too. After my 6 speed swap I still had the auto pcm in it, and it seemed like it was doing something weird with the fueling, it'd only fuel to 2400rpm and then drop off completely. Changed the pcm to a manual and instantly noticed no more drop while driving. Haven't dyno'd since... waiting for a turbo/studs/springs.

__________________
CHRIS, 1999 RAM, 47RE to NV5600, South Bend OFE/Hydraulics, 6" CAT Stack, SmartyRevo, Edge Drag Comp, Silencer MIA, BHAF, 50HP Jammers, Autometer/Westach Gauges, FASS 150/95, SOVP44, 8000 HID's. THE S.O.L.I.D CREW

SSW

09-19-2009, 10:48 PM	#1 (permalink)
JyRO Cummins Enthusiast Join Date: Aug 2007 Posts: 217 Thanks: 1 Thanked 0 Times in 0 Posts JyRO's Truck Pics	Drag Launch - 4X4 6 speed - mostly stock... I know this subject is beat to death, I just did a search and saw plenty of threads. But nothing quite like my scenario. I have possibly got an up and coming grudge race. It's with my buddy, so it's just for sh1ts-n-giggles. But I still want to win, he keeps talking up his truck like it's the only thing to tow with (at 10.5 mpg around town driving like granny, I don't think so, I can do 20 mpg driving like he does). It's supposed to take place at the local 1/4 mile drag strip. He has a 1999 Chevy Crew Cab Long Bed 2WD Auto, with a 454 ... totally stock. Well sort of, he does have these chinsy little dual pipes that look like coffee stir sticks sticking straight out the back (they're so small they're laughable). My truck, see sig, I'm running a Quadzilla XZT, RV275's, no muffler, no resonator, no silencer ring (never had a cat) so it's an absolute straight pipe, and boosting about 27 - 28 psi. I am still on the stock clutch, and plan on staying on it. Anywho, I want to beat the guy, but I'd rather loose than break something. I just want advice how I can get as quick a launch as possible, without taking too much risk of breaking something. I'm thinking to just launch in 2nd, 4WHI, and see if I can hold the rpms at about 1,500 rpm, and slip the clutch just barely in order to get immediate response when I let off the brakes. And then slip the clutch only enough to keep it from falling on its face. If he beats me, he beats me. I think I'm putting maybe 320 - 330 hp & maybe 775 - 800 lb ft of torque down compared to what other guys have dyno'd with similar mods. At that, I think I'll beat him, but it may be close. I'm going to loose the spare tire & tailgate (at least) before I go to the track. All fluids & filters will be fresh. I've got a full tank now, I doubt I'll burn too much fuel before then. Any advice how to launch without breaking anything, would be appreciated. Should I do anything with tire pressures? BTW - If he and I did a 40 mph roll, he'd get totally humiliated, but rowing through 4 gears, he may have a chance (what do you think?). - JyRO __________________ 2000 Dodge Ram 2500HD 4X4 CTD 6 speed Quad Cab Long Bed. Intense Blue Sport with Agate Leather - - - Quadzilla XZT+ (EZ for sale), RV275's, boost elbow (~27 psi), stock straight piped, silencer ring removed.

10-27-2009, 12:38 AM	#5 (permalink)
*Prowelder* 01 Cummins Join Date: Jul 2009 Location: Burden, Kansas Posts: 1,667 Thanks: 68 Thanked 106 Times in 99 Posts Prowelder's Truck Pics	Hey, Just watching and learning!!!!! I don't want to tear up my clutch either!!!! Later, Winslow __________________ Black 2001 Dodge Ram 2500 Shortbed, Ext. Cab 4x4, 5.9 24 valve, TCW-3, 2-cycle oil in every tank, 54 Block!!, NV 4500, 3.55 gears, Anti-spin, B&W Turnover Gooseneck Hitch, Autometer Ultra-Light Boost, EGT, and Fuel pressure gauges, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydraulics, Edge Comp Programer, 3" Straight pipe for now, BHAF with custom 7075 T-6 Heat Shield, AFE Torque Tube, Air Dog II DF-165 with custom cover!!

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09-19-2009, 11:53 PM	#2 (permalink)
CowboyCummins01 Diesel Freak Join Date: Apr 2009 Location: Laramie, Wy Posts: 667 Thanks: 12 Thanked 12 Times in 12 Posts CowboyCummins01's Truck Pics	yould get him. between foirst and second there is a small gear split that if you shift it just right you dont lose that boost build up which kills most 6 speeds. practice it at stop lights. I wouldnt do a boosted launch on a stock clutch with the quadzilla. youd be better off to run it up to 1500 rpms and slip the clucth when taking off to build boost. oncve. your turbo lights..youl leave him in the dust. I just dynoed at 355/744 with just a comp box, 5" straight pipe and Air intake and i hold my own on the streets. __________________ 2001 Ram 2500HO, NV5600, Just an ol ranch truck,362rwhp,811ft/lbs 10/24/09 Just Ledoux it-RIP Chris Ledoux

09-19-2009, 11:58 PM	#3 (permalink)
JyRO Cummins Enthusiast Join Date: Aug 2007 Posts: 217 Thanks: 1 Thanked 0 Times in 0 Posts JyRO's Truck Pics	Cowboy - When you say between first and second, do you mean between 2nd and 3rd gear? If not, do think I should launch in 1st? I wouldn't think so, but I will be trying a few things. If it ever stops raining down here in AL.

09-20-2009, 03:32 PM	#4 (permalink)
*phatboy07* Diesel Freak Join Date: Oct 2008 Location: The AZ STaTE Posts: 832 Thanks: 5 Thanked 8 Times in 8 Posts phatboy07's Truck Pics	ive got a 5spd... i use 1st gear jump when racing ppl. if just doin daily driving i use 2nd gear for start out __________________ NEW BUILD UP.... 97 215 Pump FUEL- 100 Plate FF, 5x14s, 4gsk, 18* AIR- Volant CAI, 64/71/14, Porting, 4in STR8 Goodies- Studs, O-Rings, Guages, 13" Valair K/C Clutch, Black 7" Mitre

10-29-2009, 10:50 PM	#6 (permalink)
2001cumminsman Cummins Enthusiast Join Date: Nov 2008 Location: Bristol, Colorado Posts: 208 Thanks: 0 Thanked 0 Times in 0 Posts 2001cumminsman's Truck Pics	you know what you need is my old quad xzallaraider chip, 140hp lol, but i would use 2nd an turn yours up all the way your gonna slip your clutch either way, jus dont ride the clutch long your ride should build boost pretty quick youd be safe with 25psi launch i would think __________________ 01 2500, S&B, ISSPRO, FASS 150, Mach 5s, Leveled, built "Floor It" transmission, lockup switch, Quad ADR, Smarty, Super B Special, ARPs, 5in exhaust Water/Meth.... 530hp 1070 ft lbs of torque... Diesel Crew

11-03-2009, 08:38 PM	#7 (permalink)
1baddiesel Diesel Freak Join Date: Jan 2008 Location: Arp Texas Posts: 573 Thanks: 0 Thanked 7 Times in 7 Posts 1baddiesel's Truck Pics	i would leave in 4hi __________________ 07 5.9 White, crew cab 3500 6spd,Sb 3600 DD 12cb 4x4,leveled, 35"Toyo Open Country's,Ranch Hand,Afe stage 2, smarty TNT/R,Dr. P stage 3,sps 62, Boost fooler. Straight piped with 8" rolled edge tip.If you see smoke then you can bet im gears!

11-03-2009, 08:58 PM	#8 (permalink)
Electric_Cowboy Oregon Chapter President Join Date: Nov 2007 Location: Beaverton/Portland, OR Posts: 1,430 Thanks: 16 Thanked 22 Times in 21 Posts Electric_Cowboy's Truck Pics	This has been my experience, then again I don't have a stock clutch, and I'm no guru, but... Put her in 4HI, 2nd gear. I'd say around 1600-1800rpm. If your stock clutch isn't slipping now, then you should be ok at that rpm range. I def would not try a boosted launch with the stock clutch. Let your clutch out just slightly quicker than your used to start and finesse your shifts down the track. I kinda think it's better on parts this way. It's just all in the timing. My first 3 times I launched in 4WD I left at 1800rpm. All 3 of those times netted me an average of 16.9 second runs. The 4th time I launched I took it to 2200rpm and got a 15.8 second run. Then I quit for the night. My next time out there I'm gonna go for a 2500rpm launch and see what that gets me. Mind you all my launches are not boosted launches either. I haven't gotten good enough to master that one yet. You should get him though. Once your turbo lights you watch him fade from your peripherals. __________________ CHRIS, 1999 RAM, 47RE to NV5600, South Bend OFE/Hydraulics, 6" CAT Stack, SmartyRevo, Edge Drag Comp, Silencer MIA, BHAF, 50HP Jammers, Autometer/Westach Gauges, FASS 150/95, SOVP44, 8000 HID's. THE S.O.L.I.D CREW *SSW*

11-03-2009, 10:52 PM	#9 (permalink)
jmd025 Thismachinekillsfascists Join Date: Jul 2008 Location: Looozi-Anna Posts: 2,646 Thanks: 31 Thanked 62 Times in 36 Posts jmd025's Truck Pics	Just an FYI, with your setup, you would dyno closer to 270 hp. I used to have that setup. Trying to help out. Josh __________________ *Louisiana Coalrollers!* VE-P-VP My trucks are modded.

11-04-2009, 10:36 AM	#11 (permalink)
JyRO Cummins Enthusiast Join Date: Aug 2007 Posts: 217 Thanks: 1 Thanked 0 Times in 0 Posts JyRO's Truck Pics	Well, thanks for the info. The 235 hp is at the engine I would imagine. So 270 at the tires I guess is feasible. My numbers are an estimate based on real dyno runs others have done with the same or similar mods. But I really don't care about big numbers. I just want my truck to run well, for a long time. - JyRO

11-07-2009, 12:56 AM	#12 (permalink)
Electric_Cowboy Oregon Chapter President Join Date: Nov 2007 Location: Beaverton/Portland, OR Posts: 1,430 Thanks: 16 Thanked 22 Times in 21 Posts Electric_Cowboy's Truck Pics	Without my drag comp I only dyno'd at 279hp and 711tq. But I also had a strange limp mode defuel going too. After my 6 speed swap I still had the auto pcm in it, and it seemed like it was doing something weird with the fueling, it'd only fuel to 2400rpm and then drop off completely. Changed the pcm to a manual and instantly noticed no more drop while driving. Haven't dyno'd since... waiting for a turbo/studs/springs. __________________ CHRIS, 1999 RAM, 47RE to NV5600, South Bend OFE/Hydraulics, 6" CAT Stack, SmartyRevo, Edge Drag Comp, Silencer MIA, BHAF, 50HP Jammers, Autometer/Westach Gauges, FASS 150/95, SOVP44, 8000 HID's. THE S.O.L.I.D CREW *SSW*