took the car down last saturday to see how the new cam/TC/underdrive pullies would do... best of the night was a 12.155 @ 110.01 MPH! the best i managed with the old cam/converter and stock pullies was a 12.611 @106. I'm pretty stoked with the new times, right where i expected it'd hit, but not as much as i was hoping for.
Anyway, I'm tryin ta think of ways to shave off that extra tenth to make 12.0X @ 110+ mph. nitrous is not an option n' the AC must remain functional. i was thinking of some relatively inexpensive ways to shave weight...aluminum DS, fiberglass hood, lightweight seats, tubular k-member etc. Next time out I'll try shifting at a higher RPM n' see how the car responds since i'm switching gears at only 5600-5700 right now, just kinda afraid of valve float.
My dad's friend just picked up a Dodge Ram SRT-10 n' came to the track with us. installed a K&N at our house earlier that day n' the truck ran a best of 14.1... kinda dissappointing, but i got to drive it on the street which was pretty fun for a truck. The most impressive thing about it tho was the brakes... it stopped like a corvette.
There was a yellow trans-am there that night too with a turbo buick motor. couldn't get it past mid-13's tho.
Hopefully i'll see some of you guys at the track sometime

 

What other mods do you have? Suspension work of any kind? You might be able to pick up some time by freeing up 'lost' horsepower being soaked up by the suspension.

13's? Dang, that's what a TTA should run stock from the factory... I sure hope he didn't have a lot of mods. Mine would probably run slower, as I have tuning issues if I really get on the gas. Must... get... Scanmaster... but they cost 249.99, nevermind shipping. Someday.

 

the list of mods is somewhat extensive i think...

Motor:
eagle 383 stroker kit
trick flow CNC 195's w/64cc chambers
holley stealth ram
bbk 52mm tb
crane gold race 1.5 RR's
ISKY cam specs: 226/234 deg, .505"/.530" lift, 112 LSA 112 intake CL (-4deg)
cloyes true roller chain
msd superconductor wires
msd billet dizzy
msd coil
msd 6al
venom 30 lb. injectors at 49psi
speedpro HV oil pump
HV fuel pump
milidon diamond stripper windage tray
moroso sumped oil pan
crappy 1.5" flowtech headers ( i think this is the bottle neck in the set-up)
compression is about 9.7:1
motorvation underdrive pullies
meziere electric water pump
polished bits and pieces

Chassis/suspension:
S&W SFC's
S&W panhard
S&W torque arm
S&W LCA's
Koni red rear shocks set to stiffest
KYB AGX front struts set to softest
stock springs
stainless braided brake lines
SSBC dual piston aluminum calipers up front, stock disk rear
cross-drilled rotors front n' back
factory wonder-bar from my IROC
factory sway bars from IROC
poly bushings EVERYWHERE
Hurst line-lock for both front and back

Trans/drivetrain:
700R4
3000 RPM stall converter
trans-go shift kit
5 pinion planetary set
HD Sun shell
9 disc clutch packs
HD servo
46,000 GVW oil cooler
b&m megashifter
Moser axles
LPW stud girdle
3.42:1

I was thinking of trying 3.73 gears maybe, cuz i'm crossing the line at about 5 grand.

 

Always the quest for more speed. You do realize, that if you hit your goal of 12.0X, you'll then want to bust into the elevens, right? Not that that would be a bad thing, not at all!

You could try the headers, as you already alluded to, but how about an alcohol injection kit, to bump compression up a bit? I'm not sure how an alky kit works, though, so someone tell me what it does exactly and stuff. Grand National owners use it a lot, judging from the turbobuick.com boards... But I think it's a knock-prevention thing so they can run more boost or something.

Hey, another thought - remote-mount turbo...? Run four or five PSI, and get a FMU, you should be good for some decent power gains...

 

Skinnies on the front and a tubular K-member, plus any other weight you can move off the car is worthwhile -- 100 pounds off will earn a 10th-sec faster ET.

Sheesh, wish I could have watched the car run, but I've been so hammered with the rear end problems on the '92 ... hope I get it fixed soon so I can have fun again.

 

What is your 60 foot? Also, what is the powerband range for that cam?

 

we always mount skinnies on the front for racing. n' i thought about a tubular k-member...but considering some alternatives, it requires quite a bit more work. still it remains an option though. And you're so right about wanting to touch the 11's... I already want to make it into the 11's but then i gotta intall a roll bar/cage; and the intentions to keep this car as streetable as possible.
I really do want to change the headers to at least 1 n' 5/8ths tho with 3" collectors, but that means a whole new custom y-pipe. I normally wouldn't have any problem with that, but my dad spent a hell of a lotta time fabricating the current 2.5" piping cuz of the sumped oil pan and exhaust cut-outs. But I definately wanna get the headers changed sometime.
Alchohol injection sounds interesting, but if it increases combustion pressure... then isn't it the same in principle as nitrous? I'll look into that s'more.
times for that run are:
60 ft. - 1.702 (best was 1.686)
1/8th ET - 7.674
1/8th MPH - 88.74
1/4 ET - 12.155
1/4 MPH - 110.01 (best was 110.28)

According to DD2000 this is the curve:

 

I agree with shorter gears or a lighter hood.

If you don't already, uncapping the exhaust might help (might not.) V-belts? Pull the p/s and a/c belts. (It's still swinging that pulley around even with the clutch off.) Fine tuning the timing and fuel pressure. Tweak tire pressure and sway bars. Or maybe just shifting higher will make the biggest difference.

How many runs did you get in on saturday?

Scott

 

I don't think the alky really burns, but I'm totally in the dark. Water has also been used to increase compression, and cool the combustion chamber, reducing chances of knock. The A/C pulley delete thing is kind of a gimmick - the pulley isn't that heavy with the clutch engaged to make a huge difference. The P/S, on the other hand, I can see the pump parasitic loss being measureable. Still, a belt that runs only the alternator and the water pump is an idea, and cheap. Electrical water pump? I would tend to think that it takes some juice to run that, but it might be more efficient then the stock mechanical pump.

Reduce your belt system during the run to just the alternator, by using an electrical water pump...?

 

Thanks for the suggestions guys, i think i'll try out all the free changes first the next time i go out first. Shifting higher might make the car a little quicker, worth a try. I already have an electric water pump and underdrive pullies, but i guess i'll try taking the belt off altogether... although i wonder if the lack of a functinal alternator will negate any performance gains.
Scott, I think i'll try messing with the timing a little, as well as turn the fuel pressure down a little. Just one change at a time of course. Tire pressure is pretty much spot on I think. I'm using MT 26x10 slicks on weld prostars, and tire slippage seems to be optimal at 13.0 psi. We got to the track just after 6, so luckily we were able to make 5 passes with sufficient cool down time in-between.

As for the alky/water injection, the benefits of a cooler intake charge are well known, but cooling the combustion process would be the exact opposite of what you want. The hotter (or bigger) the flame, the faster the molecules move, the more force they exert on the piston, and thus the more power it creates. So the cooler/denser the intake charge, the hotter the bang basically... assuming all other variables are the same. obviously there are limitations tho, since a leaner mixture usually means higher temps but less power since the the "bang" is smaller.

Anyways, thanks again for the suggestions & I will definately keep you guys posted as to the progress. Free changes first, then maybe those 3.73 gears if i need since i'm guessing that'll be the next least expensive.

 

Er, I've heard (so don't quote me) that disconnecting the alternator isn't such a hot idea, becasue the alternator/regulator keeps votage levels at the nice happy level that the car likes, so any voltage needs are properly addressed by that and not just by the battery. Proper voltages ensures proper spark to the plugs, which is a good thing. At least, that was how it was explained to me. I could be wrong, though. Shorter belt to bylass P/S? Co-worker (Dave Coburn) suggested a swtich to disconnect the hot wire on the alternator, but don't forget to flip it back on once the run is over. He also thinks that 3.73's wouldn't hurt, says you'd only see another 300 RPM at the finish line or so. I guess not running an alternator isn't such a bad idea, but I'm not a racer.

 

I say gets some better flowing headers that'll work with the current y-pipe. Maybe 1 and 3/4th with 2.5" collectors, something like that. That right there will probably get you into the 12.0x range.

Your 60 foot is pretty good so I think the suspension and tire setup is good. For future stuff, I say focus on matching up the cam and valvetrain to the intake. The HSR likes to rev high and make HP, like 6,000+. It looks like the current powerband peaks a little early (in regards to the potential of the intake). I think a cam with a little longer powerband (6,000) and the valvetrain to handle 6,000 rpm shifts and some more tuning might get you into the high 11's. Your 383 makes so much torque I dont think it'll hurt you in the lower RPM's. Just some ideas. Have you used a WB02 to tune?

 

shawn, i totally know what you mean about matching the power range of the cam to the rest of the system. It's just that we thought the 226/234 cam would be a good compromise between daily driveability and track manners. If the car were only driven on the weekends er sumthin, then i really wouldn't mind goin for a cam with sumthin like 242/256 duration. As of now, I'm satisfied with my cam selection... brake pedal feel is certainly stiffer, but still adequate.
headers just may be in the future for this car. n' i can only wish to have a WB O2 sensor... maybe after a couple paychecks.

 

If you willing take out your interior O_o The front carpet, rear carpet, and rear seat alone are around 100lbs or so I think anyways...last time I weighed it was a long time ago. But if my memory serves me correctly it was a little over 100lbs.

 

Dang, REVLIMIT, whee have you been? I thought you disappeared off the face of the Earth or something...

 

i no this is as last minute as it gets, but i'll be at HRP tonight to see if the car will do the 12.0x... brought a little blue tank with a sticker that says C16 on it... er sumthin like that

 

Haha...yea I kinda did in some ways. I took a long break from drifting cause of a promise I made. That break kinda made me forget about cars a little. Oh...also I don't have internet at home at the moment. So I have to either go to my friends houses or my families shop. haha

 

Congratulations to 1320 Right Ln. for officially breaking into the 11s. I ended up going to the track at the last minute to go meet up with some of my buddies from work & finally met Danny.
Man that car runs awesome & I'll get some vids up of the runs I filmed later. I think the run was 11.97sec @111mph. Not sure. Laterz!

Oh yeah, I wish you guys could've seen me beat my friends Mustang with my Tundra. It was his first time & he spun his tires through 4 gears. It was awesome!!!!

Anthony

 

Hmm now why couldn't you guys have gone friday night? lol how busy was it, and congrats on breaking into the 11s.. maybe you can help me get into the 14s hehe (crappydriving).

 

fridays are crazy busy! we got to the track last night at 6ish... got the car ready, n' were able to make three runs within the first hour with plenty of time to cool down inbetween. got busier as the night went on, but even towards closing, you didn't have to wait in line for very long. A lot to do with the fact that those freakin Jr. Dragsters weren't there last night, cept for one. The 11 sec pass came on the thrid try; a little race gas, increased timing, and a treated track netted us a 1.64 short time and 11.979 @ 111.84 mph. The second i let off the line lock i/rev limiter, i knew it was gonna be an awesome run. All the variations shown in 1/4 ET's break down into the first 60 feet cuz our mph is consistant at both 1/8th and 1/4 mile.
Botched a couple of runs tho, cuz i forgot to swith on the rear line lock and rev limiter after the so when i pressed the gas at the staging beams, the car crept forward n' ruined the run.... ah well... still made a total of 8 passes that night.
It was nice to have met you Anthony n' attach the person to the name. Too bad the 11 sec run didn't get filmed tho. However, I hope to provide another oportunity

 

Congrats!!