johnzss

iTrader: (11)

I went to the track this past Sunday over here in Sacramento CMI and did my best at 11.7, 1.9 60ft, almost topping off 4th gear with a 120 mph trap launching anywhere between 4k-4.5k rpms all through a 9inch and 390s. Pretty decent numbers BUT I know with more track time, I can get my 60ft down A LOT more. I was really shooting for low 11s this time since my old motor set up did a 11.6 on slicks and skinnys.. The weather was overcast and cold, somewhere in the 50s. I was running 315/35/17 Nitto NT05r @ 12lbs.

The motor itself ran like a champ! No problems whatsoever. Total trip was about 220 miles there and back.

The problem I was having was traction. I would try both dumping the clutch, also letting off the clutch easy and riding it out. Still both ways I would still burn through first gear like no other. These were done between 4k-4.5k RPM. I know many and most of you has great success hookin with DR but apparently, I need help lol.

I want to head back to the track, but Im thinking about upgrading my intake setup and changing back to my 325/45/17 Racemasters before hand.

anyways, heres one of the videos. This was my 11.9 run since the 11.7 run was towards the end with no more juice in the camera. The mustang was a monster! I wanted to see it run, most likely a 10 second car. too bad it was not having a good track day.

What do you guys think, With a better driver, what should my car really run?

http://www.youtube.com/watch?v=GkAcTDCErYI


The car has:
-LQ9 stock bottom end
-Stage 2.5 5.3l PRC CNC Ported heads, PRC dual valve springs, Chromemoly pushrods
-MS3 cam 237/242 .603/.609 112 LSA
-LS6 intake
-TSP 1 7/8
-TSP ORY
-3 inch piping
-Electric Cut out
-CME
-Moser 9"
-Stock T56
-390s

jebuzws6

iTrader: (5)

whats your current set up?

johnzss

iTrader: (11)

^updated.

TurboStangJON

iTrader: (27)

I think it should run 11.20's-11.30's with a good 60' and a good driver. That's pretty good 1/8th MPH! Did something happen during that run from the 1/8 to the 1/4?

Zmg00camaross

iTrader: (11)

Seems to hop off the line and may unload the tires, Are you dumping it or a slight slip/dump, I launch at 6k And dump it and 60ft would suffer, started to release the clutch quickly and produced and better 60ft.

Magnet

iTrader: (36)

Your slip is kinda weird man, my car went 95mph in the 1/8th but 120.7 in the quarter... So your car went 3mph more in the 1/8th but slightly less in the 1/4..

Did you miss a gear slightly or something?

Here are my slips:

johnzss

iTrader: (11)

^ Nah, dont think i missed a gear. If i did im sure i'll be in the 12s. Shifted a lil early maybe?

If anything maybe i shifted a little early from 3rd to 4th.


I released the clutch quickly, and also tried riding the clutch a bit. Riding out the clutch seem better for me.

What are you guys doing to get your best 60ft on drag radials?

Zmg00camaross

iTrader: (11)

Manual trans and radials is a tuff gig, Would have to have the suspension up properly, A 15 inch wheel with a bias ply tire would do wonders as would appropiate shocks.

TurboStangJON

iTrader: (27)

That's some good MPH either way. I trap 97 in the 1/8th which is getting me 123 in the 1/4. I agree with ZMG that a 15" rear rim with a good tire, along with some good adjustable rear shocks would do wonders. If you can get that car to dip in the 1.5's-1.6's it's gonna give that Mustang in the other lane a run for its money lol.

BayAreaSS

iTrader: (10)

I surprised you didn't trap higher in the 1/4 with a 98 in the 1/8th. I think 12psi is too low for a nitto dr, you should probably be in the 16-18 psi range. You probably could of launched from a lower rpm and got a better 60ft with less tire spin. Your car is right where i thought it would be in the 1/8th mile but i wonder whats up on the top end.

Could be the track too cuz sometimes the times don't make sense there

Hardtop

iTrader: (3)

X2. Put a set of slicks or ET streets on it and your 60' should drop.

jebuzws6

iTrader: (5)

damn, I have the same H/C with a stock LS1 bottom end, and I trapped at 116mph with a 11.6et with stock 3.23 gears and a 3200stall. Do manual cars tend to trap at higher speeds?

Magnet

iTrader: (36)

You losing 3mph on the top end is still bugging me..

Hardtop

iTrader: (3)

Yes most of the time.

Jimbo'sZO6

iTrader: (1)

IMO, you need to run more air in your drag radials. 12psi is way too low to get a full footprint. Start at 20 psi and work your way down from there, 1psi at a time, and adjust your launch rpm accordingly.
Your shifting sounds fine,,,just need to get your 60's down and you'll hit your goal easily!

Jimbo

BayAreaSS

iTrader: (10)

Yes manuals trap higher. I think he actually trapped higher with his ls1 combo

Me too, But that samething happen to my friend at that track as well. He said the car felt as strong as ever but his trap was low. He trapped 99 in the 1/8th and only trapped 123/124 in the 1/4. But a month prior he went 96 and 127.

demarco313

OP 12 psi is way to low... Start at about 23 and work your way down until your launching right.

Maybe your shift from 3-4 was a little early like you said and that will hurt your trap speed.

Throw a FAST intake on there with a nick williams TB and let it really rip

Are you still on a stock TB or is it ported?

demarco313

Same setup auto vs manual, A manual will always trap higher with a good driver

SNLPerformance

iTrader: (15)

I agree 12psi is too low with a drag "radial", they were probably cupping causing you to spin with less of a contact patch and then the low psi was adding extra rolling resistance on the big end. The weather also looked cold, so track prep is gonna play a key and your 1/8 mph is strong because who should be topping out 3rd and then making the shift to 4th in back half robbing a couple mph. The other tires are going to hurt your gearing, did you start at a higher psi? Curious what clutch you're using? My 2cents, Chris

camscam02

iTrader: (21)

The changed the location of the 1/4 mph beams as they felt they were reading too high and now they are on the low side by about a mph or so at sac.

1/8 mile mph are on par with all 4 tracks ive ran recently

also more tire pressure and do a better burnout, and dont rev it, get it spinning and hold it at a certain rpm to build wheel speed and heat