Engine/Transmission (1994 - 1998) 15 second quarter mile truck

[mschoenheider]

OK, Here is the deal. I want my truck to run about a 15 flat quarter mile. I also want to be able to tow my 12,000# gooseneck at respectable speeds through the mountains. Is it possible to accomplish these two goals, or will making the truck faster take away from its ability to tow? Currently I am happy with how my truck tows, but it is only around a 17 second quarter. I just dyno'ed last weekend, 284 hp, 688 lbft.



What parts do I need to obtain these two goals, 370s, hx-40, 4" or 5" exhaust, Scotty 2, clutch? Head work, cam, etc... . ?



I live at about 5000 feet elevation, and tow over 9000' passes pretty regularly. Thanks.

 

[jwdeeming]

I consistently ran 14. 7 at Bandimere last summer with the mods you see in my sig.



I also tow various loads up to South Park once or twice a month with the same truck.



On edit: for some reason your sig file didn't display when I first read your message (I'm having problems with my browser today). Now that I see it, you have a pretty different truck than mine - probably not much help to you.

 

[markdixon]

My truck went 15. 5 with the parts listed bellow the only proublem I have is egt going to step up and put the PDR HX 40 on this year. I also tow alot I just watch the egt gauge and use my right foot to maintain 1200 deg Just took two trips towing two different boats that were 10,000 # at 75 mph no proublem.

 

[HoleshotHolset]

mschoenheider: A set of ladder bars will help you hook-up... . that'll lower your E. T.



A streetable 15-flat CTD is EASY to do... . no head/cam work necessary... . just lots of fuel/boost and a little timing.



Matt

 

[nascar mark]

Buy a 1st gen. LOL

I surprised a few people with my 7300lb truck running in the 14 sec range with just a PDR cam, PDR HX35, DTT trany and POD's.



There's no reason you can't with the right setup.

 

[drawson]

My truck did 15. 22 with just a #11 all the way forward, 370s, the stock turbo with a 16 CM2 housing, and a Psychotty(Scotty1) two years ago. This set up was a pretty good towing set up, but there where some hills I would have to down shift to 4th and slow to keep the EGTs in check.



The set up I have now hasn't gone down the Quarter mile yet but it tows alot better. Over the same hills it I can now stay on 5th allow though i still have to slow sometimes to keep the EGTs in check. My upgrades now are a #0 plate, PDR Super HX-40, 4K GSK, and a Scotty 2 with both ducts.



One other thing it's hard to get a 5 speed truck to get consitent ETs when the power get too high, unless your will to launch in 4X4. Traction is a big problem.

 

[mschoenheider]

Thanks for the replies. I am trying to decide if after I put 370s in, I will need to spend the $ on the HX-40, or if I can just upgrade the compresor and put a 16 cm housing on my HX-35.



drawson, 4wd isn't an option, but the lower weight of my 2wd migh help.



Matt, I hear you on the traction bars, that has been on the back burner for a little too long.



Anyone out there done the compressor upgrade on the HX-35? Is it worth the $180 or so the parts go for?



Thanks.

Mark

 

[azgearpro]

q time

with my signiture for ref, does anyone have any idea where my time should be in the quarter mile?

 

[Turbo Thom]

Mark:

You can get to 15 flat but the HP will have to be there. When I ran at the Atlanta Mopar event I think I could have gotten to the 15 number but for some reason I could not get into fifth gear with a speed shift. I coasted for about 150 yards and still ran 15. 74. Now I know that ain't fast for some folks but this truck weighed in at a local truck stop at 7450 lbs. .



As far as the turbo goes I changed to the 14cm2 non wastegated housing, with a RRook 4" exhaust and have found that to be right for me. My EGT's never get over 1150 and the spool up is quick. With my setup I dyno'd at 405 hp and 1021 lbs of torque. That's more than enough for towing, which I do, and still docile enough with the con o to drive every day. I just wish it didn't put so much smoke on the fiver.



. . PT. .

 

[Deezul1]

I havnt had mine on the strip yet but I beat a car that runs15. 3 several times and towing isnt a problem. I am thinking of going to a #10 plate but dont know how that will work towing a 6500lb TT.

 

[Turbo Thom]

deezel 1



There will be no trouble towing with the #10 plate. Just be a lot more "tender" with the right foot. All you will have to watch is tearing the hitch off the trailer and leaving the trailer behind.



. . PT. .

 

[C. Harlan]

from experimenting, my SCOTTY II actually raised EGT's by 150°-200° under a load. it is fine for cruising down the highway, but you also cannot hear that awesome PDR HX40 when it is on. . I usually run naked without it, and let the AFE inhale 360° of air. . I think this summer is when it will really make a difference. so X the SCOTTY II off your list for now, and go for more power bombs.



-Chris-

 

[MikeR]

#10 plate

370's

GSK will be a must (I see you alredy have it).

PDRHX40 will also be a must

Southbend clutch



This will set you at about 400hp, and you may just break into the 14's with a 2wd.

I feel you can do this without tearing the head or cam off.



The stock turbo is out of the question, or any HX35 for that matter, EGT's will be too much. You'll need to be at least with the HX40/16. You won't see any difference beetween 4" and 5" exhaust.



If you want to tow with safe power, install a valet switch.

 

[Deezul1]

I believe I can break in to the high 14s with my current setup which has a stock HX35 turbo with a 16cm housing by remove 1000lbs of tools and running the aux fuel tank empty. I also would remove the spare tire and camper shell. I think its prolly running 15. 1 or 15. 2 now and with the weight reduction might break that barrier. Hopefully will find out at MM this year.

 

[drawson]

charlan, THis is really strange to see more EGTs with the Scotty in place sucking cool air???? Are you running it with both holes??



I haven't found a place where the Scotty 2 doesn't make a big improvement over an open filter.

 

[Turbo Thom]

MikeR:

Don't tell him to spend more money if it ain't necessary. I have the same as you say but an HX35 and the 14 housing. As I said in the post above, 1150 and that is pushing it pretty hard. The Piers turbo is a good one but not a "must have". The 35 does quite well for me. Why not for him?



. . PT. .

 

[C. Harlan]

THis is really strange to see more EGTs with the Scotty in place sucking cool air???? Are you running it with both holes??



Yes... Both holes are open, and it still seems to run a bit warmer. I ran the same route, one with the SCOTTY II, one without... It may run better in the summer with it on there, and eliminate all the heat from the motor. we will just have to wait and see!



-C-

 

[MikeR]

Originally posted by Turbo Thom

As I said in the post above, 1150 and that is pushing it pretty hard. The Piers turbo is a good one but not a "must have". The 35 does quite well for me. Why not for him?



. . PT. .

Are you sure your gauge is accurate? Up here we are seeing guys with that combo bury a 1500deg gauge even with HX35/14's. Are all these trucks' up here goofy?

In fact when I think about it, a slid stock plate will generate 900*. You mean to tell me adding about 150hp only burns about 250* hotter than that?? I cannot say I've ever seen that.



I'm sticking with my HX40 recommendation, but hey, it's your guys' money.

 

[Turbo Thom]

MikeR:



I installed the # 10 plate from Piers and the 4" exhaust from Rip. I also run the AFE filter. And yep, the gauge is good. Before I installed the housing and exhaust tube I could peg 1600 whenever. Temps went down 200* with those two changes. The filter and exhaust. I tow a 14,000 lb fiver and that's where I gauge my EGT's.



I agree Piers' turbo is a good one. It's just that my combination works real well and $150 for a housing verses $1000 on the turbo keeps my expenses in line. Also I'm not makeing big HP. Just a little over 400. That might be a difference there. No argument here, just discussion.



. . Preston. .