99slobird

iTrader: (1)

My car is a 99 trans am tuned by lane at hinsons, its a 383, lts, 102/102, speed density, x pipe ran under the rear end, th350, 2800ish converter, moser 12 bolt 3:73 gear, 28 tire, 3200 race weight, car made 432/400 on motor and 548/495 on 150 shot (62n 33f) It ran 7.33 @95 1.62 60ft and on spray it went 6.68 @106 1.55 60ft. From you who know more than I what are your general thoughts, suggestions, ideas And do you think the car should be going a lil faster?

99slobird

iTrader: (1)

Ohh by the way it's a 102mm wet plate kit from nitrous outlet. The at seems to be mph good but I'm not so sure about my et on spray

BigBirdLS1

My car was cammed/tuned by lane @ hinson too. Good guy he knows his ****. And I had the same thing going on as you on spray my et really didn't improve a lot only by .16 but my mph went up by 7. I do not spray in 1st and I cut a worse 60'. I'm guessing if were to run @ a 1/4 mile the gains would be much larger. GL with the car you got a fast ride there.

Cliff

iTrader: (19)

Looks like your car is set up for 1/4 times not 1/8.

87silverbullet

iTrader: (11)

You need a bigger converter for startes. You should be cutting a 60ft on the motor like what you cut on the bottle. Since you are running the 1/8 a 4.10 gear might be more in order since you have a th350 and a 28" tire.

SuperSlow02

iTrader: (16)

Yep, step up to a 4.10 and get a better converter, your leaving Alot on the table with that. It seems the car is makin good low end power since it's going 1.6s

Carter01

iTrader: (11)

What was the DA on these runs?

Yes, your car should be in the low, low 7s or high 6s on motor and I would think easy 6.40s on 150 shot at 3200 race weight.

It appears you have some suspension/converter related issues. Maybe your converter is blowing through? Any logs of the run? How far does it drop back between shifts?

Your jetting doesn't seem to far off so I think it is more verter/susp realted...

turboelky

iTrader: (7)

My 2000 Formula, with stock LS6 longblock, AFR 205 heads, Comp Cam, Fast 92/92 combo, ARH LT, Yank 4000ss, and 9" with 3:73's runs 7oohs on motor with 1.5 60's, and 6.30s with 1.3 60's with a Harris 150 plate kit. Car weighs in at about 3300#. The only time I ran it in a 1/4, it ran 10.02 @ 133.

99slobird

iTrader: (1)

So I should put a 4.10 gear in there and see where that gets me? I'm not sure on the da also. I'm looking at going with either a better set of heads or a dedicated fuel cell and upping to a 200 shot, which would give me better final results. I currently have a set of ported 241s with a 10:3 cr. If u think I would be better off with a set of heads which ones would be best for my car? Thanks guys for all the feedback

SuperSlow02

iTrader: (16)

That converter needs to be changed first

Quick Sh0t xMLx

This, I would definitely change the converter before changing the rear gears. Your setup should be launching much harder than your 60s indicate.

87silverbullet

iTrader: (11)

I think you will net more of a gain with a converter change compared to changing the gears. Call up Yank or Circle D and get them spec you something. I think ou will be happy with the outcome. Then if you feel it needs it, change the gears.

thedudeZ

iTrader: (14)

Makes me wonder about my junk, runs 1.7 60fts on motor consistent high 7's in the 1/8th and runs 6.70's and 6.80s@99-100mph on a 100 shot. PTC speced the converter for nitrous and said it would be tight, might need a loosen up?

99slobird

iTrader: (1)

Well I've tryed a loose converter before and I was blowing through it on spray so that's why it is so tight now. I know Ptc really isn't known for high quality ls converters but it I close to the house and i have several friends there that build them for me for little to nothing. I have changed suspension up some since last track day, I have went to a -4 pinion angle instead of a -2 and I have lowered the rear of the car thanks to my racestars that are 10 inches wide and tuck up under the car ( I was on a 7 inch rim...... Kinda scary at 106 mph) and the front bushings on my lower control arms were melted where this lazy *** welded subframe connectors on without removing the lowers so maybe that being said will lower my 60fts and I can get a 6.50 out of it

99slobird

iTrader: (1)

But my question remains would I see more gains from the 200 shot or from a good set of heads. A set that would flow more and raise my cr???

thedudeZ

iTrader: (14)

well I've gotten a best of 1.31 on a 125 shot but always ran 1.35-1.38 but have always had low mph ranging from 98-100mph going as fast as 6.68. thought maybe the converter was only working so well down low because the car weighs 3600lbs raceweight and once the car got out it would slow down due to the verter being so tight. This is a th400 car 4.11 gear 325/50/15 radial.

BTW I pulled my motor this week debating on doing a 383 myself with the tsp 5.3 heads I have already and having a cam specced to work well with the vic jr/4150 as I've always run an ls6 intake.

99slobird

iTrader: (1)

A 1.31 60 is nasty and my 383 with the ported241s and ms3 cam has went a 7.36 on motor (I've only ran on motor twice) and 6.68 on the 150 shot which is only putting 116hp on the ground over motor. Which I thought it would be more than that. Lane has 24degrees of timing in it also. I think I need to put 4.10s in it 200 shot and it may go a 20 or 10 on a good track

thedudeZ

iTrader: (14)

that 1.31 6.68@98 was a hail mary pass. 18* timing also. No window switch just wot switch. This converter only reacts to being hit hard. the cam was a 230/232 595/585 114. Like I said considering going to a 383 like what you have.

SuperSlow02

iTrader: (16)

Give Greg at FTI a call. My car is cam only and damn near full weight and I'm going 1.59 60ft and 7.41@92 in the middle of summer(2600da) on motor. I wish I could give you nitrous times but I'm having issues with it. Ill be back at the track this Friday I'd he rain holds out for some more nitrous runs, then I can give you some info on big stalls and nitrous.

99slobird

iTrader: (1)

Ok that sounds great