solocus

iTrader: (8)

Ok, so I'm looking for some advice or comments ( besides slow car ). I was bringing down the 60' and launching at 3K to 4K RPM without spinning at 27psi in the M/T DRs so I should raise my launch RPM and see what happens, also lower M/T psi if needed. I have included a launch video and Dyno link below and ask how my launch looks as well as if I'm leaving anything on the table with my AFR. Some history is below also please comment or advise.

2001 SS M6
Stock CME Exhaust
Kooks Header catless ORY
Lid
Ported TB
UMI LCA, PHB, Adj TA (-2 degree) LCA relocation Bkts, SFCs
OZ700 Z-Grip
Strange Rear SA shocks
Strange s60 4.10s
Strange Chrome-Moly Drive shaft and yoke
M/T Drag Radial
Dyno Before S60 Link
Launch Video


Car weight has to be about 350 - 400 lbs over stock weight. Yes, I'm a big boy and with the extra 150 lbs from the rear and SFCs and me it is well heavy.

PB with what felt like a good DA (eagle F1s, Stock 10 Bolt, No LCA relocation Bkts, OEM Shocks

60’ 2.092
1/8 8.707@83.37
1/4 13.321@106.35

Results after Mods (added S60, LCA Relocation Bkts, Strange Rear SA shocks, M/T DRs)

DA approx 1680
Pass 1
60’ 1.952
1/8 8.962@77.98
1/4 13.813@103.96

Pass 2
60’ 1.932
1/8 8.691@80.16
1/4 13.464@104.86

Pass 3
60’ 1.896
1/8 8.551@81.50
1/4 13.291@105.5

battousai

iTrader: (3)

the 60' needs to go down alot. most of the people i see run around 20 PSI on their DR's.

blk/slvr02ss

iTrader: (21)

M/t should be @ 18psi and u need to leave @ a higher rpm.

KevinR

^^^:d

fdjizm

17-18 psi cold on the DR's, 27-30 is for the ride to the track lol

SuperSlow02

iTrader: (16)

If you can get an extra set of 16s, get a set of Bias plys and leave off the rev limiter. Drag radials just arent for 6spd cars

solocus

iTrader: (8)

Thanks for the replies, and I don't want to seem ungrateful but lowering the tire pressure when I'm not even spinning seems pointless.

airforcemanss

iTrader: (23)

so stock front shocks vs strange rear? i would do a qa1 w/ 300lb spring for the front

rtr2001ss

iTrader: (2)

You'll start spinning if you leave at a higher rpm. I've launched from 6k, not the limiter, cause that isn't great for the car.

fdjizm

You're not spinning because you are only leaving at 3k.

BarneyMobile

iTrader: (4)

Agreed, Works like a charm!

s346k

iTrader: (4)

this is because you are pussyfooting the launch. when you start cutting loose from a higher rpm, the tirespin will come and you'll be bitching about not hooking haha.

fwiw my buddy was launching his moser 9" 457 geared car at 6k+ rpm..spinning to a 1.6x 60' on stock 20 year old suspension (swapped 3rd gen). granted he has a head/cam car, the 60' shouldn't be too much different.

edit: he was on 255/50/16 m/t et street DRs. drop your air pressure to 13-15psi, as it will go up after you do a mandatory nuclear burnout. i told him he needs a real tire and real suspension. he manned up this winter and now has all adj ****, including coil overs, and et drags haha. i can't wait to watch him yank some tires.

solocus

iTrader: (8)

Got to start somewhere on launches and street tires spun at any pressure at 2K without slipping the clutch. So when the weather gets a bit nicer I will lower tire pressure and drop the clutch at 6K. I'd love a 1.6 60' In fact a great 60' was my goal, then more power.

Chris05ssTruck

iTrader: (9)

6 sp cars CAN work on a radial.....just gotta tinker with the suspension, each track is different, even different days. Can't just dump it on the radials at 7k like i leave, just gotta get the feel for driving it too. More seat time will do wonders. I cut 1.50's all night on not so great of a track on a lil 275 26' tall MT DR that is bald, and in **** air. Don't let the air pressure down to 13...it's not a slick radials like air. I keep mine around 17ish after the burnout. The most air without spin is gonna be the fastest.

You could do like all the other 6sp guys and put a band aid on the problem. Just run a decent sized slick and dump it and go!

2001z

iTrader: (32)

Yes a manual car can work on a radial but the real question is why not just slap on some slicks and let her eat and forget having to tinker and get dissapointed just to get a radial to hook? He has the rearend for it so there is no reason besides having to swap them at the track.

Chris05ssTruck

iTrader: (9)

I'm not dissapointed at all. Have you ever drove anything with decent power down the track on a DR and a slick? World of difference. Not to mention i like the challenge. Something different, takes a better driver, etc.
Anyone can dump a clutch....
In a car that actually makes power you always have to tinker no matter if it's a slick or a radial.

2001z

iTrader: (32)

Who are you refering to if me yes i have ran down the track many times on radials and slicks spraying off the line making some decent power. Everyone has there own prefrence and to me radials on a 6 speed is not a good combo especially if your wanting to leave the line on spray like i do. I have full suspension and rather do it on a slick than a DR like most 6 speed owners . You kinda confused me with the all you have to do is dump the clutch with a slick then you say no matter what you have to tinker on a slick or a radial But to each there own.

robert miller

I agree, stick car needs slicks for the 1/8 or the 1/4 mile.