Drag Racing Results - H/c 4000 stall with 3.73 1/8 mile run

Car didn't feel like it was hooking well.
60 ft 1.64
E.t. 7.508
Mph 91.528
This is with strange sa shocks, LCAs, torque arm.
Does it have more in it?

One of the easiest things to help with spinning on the initial hit is to soften the extension on the rear shocks.
Carl

One of the easiest things to help with spinning on the initial hit is to soften the extension on the rear shocks.
Carl

I tried a little softer on the shocks but ran slower.60 ft wasn't as good either.

That 60' is very soft for a H/C car.

What tires?

There is a lot more left in it.

Mph looks low to me. I can trap that or better without the heads. What was the DA?

That 60' is very soft for a H/C car.

What tires?

There is a lot more left in it.

26" E.T. Streets on stock TA wheels,I had 28" hoosiers ready but apparently I didn't grind enough on my caliper and rim was rubbing ,so I barrowed my friends tires. Tire pressure was at 15 psi.

4000ptc
373s
Hand ported 317s
Custom 226/228 .588 114
Kooks 1 3/4 ory and magnaflow with cutout
Ls6 intake ported tb
Lca, panhard, tq arm, rear shocks
3450 or so race weight
2000+da


7.31-7.38 @ 94.0-94.8 consistently..1.50-1.53 short times just barely spinning out of the hole. At the time it had a tune for nitrous, was pulling 8*.. motor tune and hooking in same weather might have clicked a 7.1x@96 1.4x.

Definitely more in It.

Brand of coverter? Full details on setup?

Mph looks low to me. I can trap that or better without the heads. What was the DA?

density altitude = -223.80 ft

density altitude = -223.80 ft

Calculated da was negative 223???

A ton more left in it..

Btw, I made 377rwhp.. although a bit misleading because of the dyno, I was more around 400rw on those passes, little less possibly.. Dyno is known to break hearts.

4000ptc
373s
Hand ported 317s
Custom 226/228 .588 114
Kooks 1 3/4 ory and magnaflow with cutout
Ls6 intake ported tb
Lca, panhard, tq arm, rear shocks
3450 or so race weight
2000+da


7.31-7.38 @ 94.0-94.8 consistently..1.50-1.53 short times just barely spinning out of the hole. At the time it had a tune for nitrous, was pulling 8*.. motor tune and hooking in same weather might have clicked a 7.1x@96 1.4x.

Definitely more in It.

Brand of coverter? Full details on setup?

pp stage 2 ls6 heads, torquerv.2 cam,ls6 intake,Yankss4000,slp loudmouth ,LCA'S ,UMI torque arm, strange Sa rear shocks, 3.73 gears, performabuild level2 , I'm pretty much stock weight minus spare and jack.

Exhaust?

Pretty nice mod list.. First thing that comes to mind is the tune being off.
Had it on the dyno?

Exhaust?

Pretty nice mod list.. First thing that comes to mind is the tune being off.
Had it on the dyno?

Exhaust is pacesetter longtubes to a loudmouth, yes was tuned, dyno said 432 HP 390 tq, people have told me it was a happy dyno idk, I had the tune double checked by different tuner, he said other guy did a good job. Also have a walbro fuel pump and shift points are 1st to 2nd 6400 2nd to 3 rd 6400 and 3rd to 4th 6390.Revlimiter set at 6900.

A full weight trans am is usually a heavy mo-fo.. i wouldnt be suprised if the car is close to 3800 with driver.

A full weight trans am is usually a heavy mo-fo.. i wouldnt be suprised if the car is close to 3800 with driver.

What s wierd is my buddies stock internals full boltons with a ss3600 stall was running 7.7s his is full weight as well.So h/c only 2.5 tenths better just doesn't add up.

http://ls1tech.com/forums/drag-racing-results/1477923-347ci-1-8mi-n.html

Your 60' and 1/8 mph is low. With that SS4000, you should be pulling at least a 1.5 60'. Crappy track prep? You should be shifting at 6500+ with that setup.

http://ls1tech.com/forums/drag-racing-results/1477923-347ci-1-8mi-n.html

Your 60' and 1/8 mph is low. With that SS4000, you should be pulling at least a 1.5 60'. Crappy track prep? You should be shifting at 6500+ with that setup.

Track prep wasn't great, your probably 200-300 lbs lighter than mine. My cam peaks at 6400, wouldn't it hurt me more to bump shift points higher?

if it peaked at 6400 on the dyno then you need to be turning it 6600 to 6700. mph is diff low

You DO NOT want to soften the rear shocks for drag racing. Play with your settings but I had a lot of success running the rears around 10 in the back - keep in mind, you may need the left side softer than the right to help the car come back straight and evenly hit the tires. That is an already impressive 60ft time for just LCA, relocations, and shocks. What is your power level? What tires are you running?

if it peaked at 6400 on the dyno then you need to be turning it 6600 to 6700. mph is diff low

Ok, il try bumping my shift points up. Thanks

You DO NOT want to soften the rear shocks for drag racing. Play with your settings but I had a lot of success running the rears around 10 in the back - keep in mind, you may need the left side softer than the right to help the car come back straight and evenly hit the tires. That is an already impressive 60ft time for just LCA, relocations, and shocks. What is your power level? What tires are you running?

Dyno said 432 HP and 390 tq, I was on 26" m/ t e. t streets at about 15 psi, my buddy has the same shocks he set them all the way soft and dropped a full tenth, but he's not putting as much HP to the wheels. Il try the left shock softer and see if that helps thanks for the info.

How terrific is this, I ran that same exact tire. I thought you were on a drag radial. I ran mine at 14-16 psi with my shocks set at 9 back left and 11 back right. Car came back straight and the launch was clean. The drag radials tend to like a little more air.

How terrific is this, I ran that same exact tire. I thought you were on a drag radial. I ran mine at 14-16 psi with my shocks set at 9 back left and 11 back right. Car came back straight and the launch was clean. The drag radials tend to like a little more air.

No dragradials didn't work I'm thinking it might just be the track prep. But il try and do a couple like adjust shocks and shift points.

Went back to track,only changes were SSRA kit, and SFC, best run
60ft 1.59
1/8 7.38@92.29
1/4 11.62@115.36
Still had a little spin.

I'm guessing your ride is around 3700-3800 lbs w/you, so that'll explain the low mph.

I'm guessing your ride is around 3700-3800 lbs w/you, so that'll explain the low mph.

Yeah, it pretty much stock weight only thing missing is spare and jack, and I'm 200 lbs.

it must be the weight, that still seems a little slow. keep up the good work.

for comparison my bolt-on a4 car went 7.6 @ 88 @ 2500' and a 3650ish raceweight. other than normal bolt-ons, i had 373 gears and a fuddle 4k stall converter. spinning to low 1.6x 60' on stock susp + LCAs, SFCs and removed front swaybar. also had a bent tq arm. stock snowflakes on m/t et street DRs. they liked about 14 psi with my suspension setup.

friend of mine went 11.6s @ 116 on completely stock suspension in a cam only, a4 car with a rw of around 3650.

Why so heavy?

You DO NOT want to soften the rear shocks for drag racing. Play with your settings but I had a lot of success running the rears around 10 in the back - keep in mind, you may need the left side softer than the right to help the car come back straight and evenly hit the tires. That is an already impressive 60ft time for just LCA, relocations, and shocks. What is your power level? What tires are you running?

Would'nt you want the Left stiffer on extension to even the hit? I know my car hits the Left rear harder that Right.. Just ordered my single adjustables due to hitting the tired to hard, probabaly should have went double though..

What s wierd is my buddies stock internals full boltons with a ss3600 stall was running 7.7s his is full weight as well.So h/c only 2.5 tenths better just doesn't add up.yea i agree, my car is a 02' WS6 with everything factory stock except TSP lid,RPM 5 cam,patriot gold springs,YANK 4200 stall,FLP 13/4 long tubes(not even made anymore lol) Hutto true duals,MT DR's 275-40-17's, the car is lowered(that way when i bought it) it weighed 3700lbs+ cant remember exactly and it was tuned by Sam....anyway the car dynoed 414rwhp 390rwtq locked and went 11.7@116 1.62 60ft in july in texas on a 100* day the 1/8 mile was a 7.49@92 that was like 2 years ago and i never went back in the fall like my tuner wanted me to do he said it would drop a couple of tenths in the cooler weather but oh well regardless im going to say its in the TUNE:engarde:

yea i agree, my car is a 02' WS6 with everything factory stock except TSP lid,RPM 5 cam,patriot gold springs,YANK 4200 stall,FLP 13/4 long tubes(not even made anymore lol) Hutto true duals,MT DR's 275-40-17's, the car is lowered(that way when i bought it) it weighed 3700lbs+ cant remember exactly and it was tuned by Sam....anyway the car dynoed 414rwhp 390rwtq locked and went 11.7@116 1.62 60ft in july in texas on a 100* day the 1/8 mile was a 7.49@92 that was like 2 years ago and i never went back in the fall like my tuner wanted me to do he said it would drop a couple of tenths in the cooler weather but oh well regardless im going to say its in the TUNE:engarde:

Yeah idk had different guy look at the tune, he said other guy did a good job with the tune. I believe you gave me Sams number a while back to check my tune but I couldnt get in touch with him. Do you go to Dallas raceway in crandall, tx?

thats heavy try to remove some stuff just for track use then put them back on..and see what happens

Your car is getting it done, but I think there is more there for sure. I think it is the tires and the fact the car needs more weight transfer. The MPH does seem a little low but that could be explained in the shift points. Videos would help!

When my car had the stock 91K mile engine in it with bolt on’s and LS1 intake with no internal mods never even had the valve covers off of it in -200 DA ran 1.50's 60 foot and 7.50 at 91 +MPH and was 3,665 lbs with me in it on race day. The transmission had a stall and the rear had 3.70 gears and the car made less than 320 HP to the wheels.

On your last time out did you raise the shift points?

N2

Your car is getting it done, but I think there is more there for sure. I think it is the tires and the fact the car needs more weight transfer. The MPH does seem a little low but that could be explained in the shift points. Videos would help!

When my car had the stock 91K mile engine in it with bolt on’s and LS1 intake with no internal mods never even had the valve covers off of it in -200 DA ran 1.50's 60 foot and 7.50 at 91 +MPH and was 3,665 lbs with me in it on race day. The transmission had a stall and the rear had 3.70 gears and the car made less than 320 HP to the wheels.

On your last time out did you raise the shift points?

N2
Went back to the track pretty close to same DA 436, only changes were slp25% UDP. My 60's were horrible.
60 1.69
1/8 7.38@ 94
1/4 11.52@118
Even with a bad 60' still gained a tenth and mph. My buddy thinks I got 11.3s in it if my 60' come down. Havnt messed with shift points, not to sure on where to put them, my tuner told me to put it in 1 st and see if it keeps pulling after 6400 but I couldn't get an accurate reading. I think I néed new tires maybe and front shocks.

If the HP peaked at 6400 you will most likely want to shift a few hundred RPM higher. The reason for this is so that your RPM's will start a little higher in the next gear allowing for more average HP as you go down the track.