View Full Version : 9.82 @ 134 MPH Stock 5.7L/346ci LS1 Short-Block!


Trevor @ Texas Speed & Perf.
10-18-2008, 10:35 AM
We've had several threads going in other forums, but I wanted to post the results here, too. :) We claimed the quickest heads/cam car record last weekend at the NMCA LSX Shootout in Memphis, TN. The car is a '98 Z28, naturally-aspirated, 2,858 lb. with driver, stock 346 short-block with ARP rod bolts, PRC 215cc cylinder heads, MS4 camshaft, TH200 trans, & 8" race converter. The car ran three 9.8x passes last Saturday, the first and last passes being a 9.82 and the 2nd pass being a 9.87. The car had a 1.275 60' on the first pass and a spinning 1.32 60' on the last pass. The last 9.82 was in the heat of the day! We were going for a low 9.7x pass Sunday morning, but when the car landed from a pretty good wheelie it broke the steering rack in half.

Here's a link to the original post in the LSX Shootout forum:

http://www.ls1tech.com/forums/showthread.php?t=1000289&page=4

Here's a link to the last 9.82 run on Saturday:

http://www.precisionracecomponents.com/982pass.wmv

We're going to head to San Antonio Raceway in a few weeks for some better air so we can bump the record again by a few tenths. :)

Trevor
Texas Speed & Performance

daniel6718
10-18-2008, 11:30 AM
so this is no spray? how the hell you getting 1.27 60'

Trevor @ Texas Speed & Perf.
10-18-2008, 05:57 PM
The car is naturally-aspirated. This is why we went for the record at the LSX Shootout so everyone could check the car out. :) The 1.27 60' comes from a well-built converter that was speced for our engine. Our 1.27 isn't that crazy considering NHRA Stock Eliminator LS1 cars have to run stock heads and still manage high 1.2x 60' times! It's all about the combination, and the lighter you can get the car the more it will benefit you for ET everywhere.

Trevor
Texas Speed & Performance

01blackz28
10-18-2008, 05:57 PM
congrats man thats really flyin stock bottom end.

01blackz28
10-18-2008, 05:57 PM
what kinda weight reduction have u done and shocks etc ...

Coach 02 A3 Z/28
10-24-2008, 10:44 AM
Big time congrats Trevor.

Coach

venom ws7
10-24-2008, 12:25 PM
BIg Congrats and great work Trevor and evreyone at TSP.

ThunderStruk
10-24-2008, 02:03 PM
Congrats Trevor!!!! The car was flying all weekend.

TOSTO RACING
10-24-2008, 05:25 PM
very impressive:D

Beaflag VonRathburg
10-24-2008, 08:12 PM
What sort of converter and gears are you running? You guys kind of want me building me 93 up to challenge you guys. Granted I don't have the money for all of the suspension / rear end right now. It'll be light though, around a 2700 lb race weight with AC and PS.

-Joseph-
10-25-2008, 12:18 AM
We've always had good results from Turbo Action for N/A converters. If I wasn't so busy I'd build a H/C LS1 setup from a LT1 chassis for myself, they seem to be more plentiful as cheap rollers.

The TSP car has 4.30 gearing in a 12-bolt, a little too much for the current trap speeds but when the shortblock can be replaced for <$500; you care a little less about the RPM it runs at. I think we'd be better off with 4.10's with the H/C engine and using the 4.30's for a cam-only setup.

If you can get it that light with stock suspension components, I wouldn't buy all the suspension parts either. LCA's, RR Airbag, Torque Arm, Relocation brackets and some front QA1's would probably be adequate at a minimum.

LSWONGTO
10-25-2008, 01:04 PM
Thats f*&$ing flying guys :D I wonder how high (rpms) they are taking the stock short block up to. Congrats and can't wait to hear about a 9.7 pass!!

TOSTO RACING
10-25-2008, 01:06 PM
You guys should get that cam only record too.
Throw some stock 241's on there and let it rip:D

Pretyflywiteguy
10-25-2008, 02:17 PM
holy hell that's movin..

-Joseph-
10-25-2008, 02:45 PM
Yep we have a pallet of 241 heads, not to mention the plethora of stock heads laying around from Heads/Cam swaps that I can't get customers to take with them. It's an option for a rainy day here.

I believe we're shifting at 7000rpm and crossing the traps at 7400-7500 or so. I don't mind running it higher myself. That's about the only reason I'd want to change the gearing though; when we hit some good air it'll probably MPH a little more, in turn more RPM.

ndfrsd6
10-25-2008, 03:08 PM
sick 60ft ! ! congrats !

ndfrsd6
10-25-2008, 03:10 PM
how did u get your race weight at 2800 with driver ! thats awesome

-Joseph-
10-25-2008, 03:36 PM
Thanks!

Step 1: Unbolt and remove EVERYTHING!
Step 2: Put back what you need.

That's about it. :D

Beaflag VonRathburg
10-25-2008, 05:15 PM
We've always had good results from Turbo Action for N/A converters. If I wasn't so busy I'd build a H/C LS1 setup from a LT1 chassis for myself, they seem to be more plentiful as cheap rollers.

The TSP car has 4.30 gearing in a 12-bolt, a little too much for the current trap speeds but when the shortblock can be replaced for <$500; you care a little less about the RPM it runs at. I think we'd be better off with 4.10's with the H/C engine and using the 4.30's for a cam-only setup.

If you can get it that light with stock suspension components, I wouldn't buy all the suspension parts either. LCA's, RR Airbag, Torque Arm, Relocation brackets and some front QA1's would probably be adequate at a minimum.

I got the whole car for basically $900. All that was wrong with it was a freeze plug in the block that leaked. I'm parting out the whole LT1 / 4l60 combo now. I've already taken out 307.509699 lbs and stand to lose another 120ish switching to an LS1, TH350, and 9.5 inch converter.

The converter I have is a PTC 3800 that I'll be putting in for a while. It's more of a tighter nitrous converter, but I got it for $250 basically brand new so it was too good of an offer to pass up. I checked out those Turbo Action converters. Do you just run an off the shelf 8 inch? I noticed the stall speeds were around 5300. Tire wise I'm guessing you are running similar to a 28x10.5? W tire?

I can take another 230ish lbs out spending a little bit of money. That should put it around a 2960 raceweight. I think it should run pretty hard for having around $3500 in it.

mongoose_ss
10-26-2008, 11:03 PM
What date are you guys coming to SA? would like to checkthis car out in person

Trevor @ Texas Speed & Perf.
10-27-2008, 09:01 PM
You guys should get that cam only record too.
Throw some stock 241's on there and let it rip:D

That will come this winter, too. :) We've joked around about taking some 241's with us the same weekend we run for the heads/cam record again. We could bump the heads/cam record on Friday and set the cam-only record on Saturday. :D It will most likely happen on two different weekends, though. Either way, we're going go for the cam-only, too.

We have not set an exact date for when we'll head to San Antonio Raceway. When we know, we'll definitely post up so anyone that wants to see the car has an opportunity to do so.

We'll end up with 4.10's before we go for the heads/cam record again. It's buzzing 7500 through the traps, and that was in 2,000' DA! I expect it to buzz 7500 through the traps with 4.10's in good air. :) As Joseph said, we shift right at 7000.

Trevor

2003cobraH/C
10-27-2008, 10:44 PM
that is a sick setup!!! Mabe a F body for me?

tektrans
10-28-2008, 06:46 AM
That's Awesome!! You got a midget driving that car with that raceweight, haha?
Or are you using remote control? :jest:
GREAT JOB!!!!!!!!

-Joseph-
10-28-2008, 10:31 PM
That's Awesome!! You got a midget driving that car... haha...! :jest:


Yea! It's Trevor! :jest:



mongoose_ss, we haven't made any plans yet, probably post in the TX forum when we make it down south.

nmass399
10-29-2008, 03:49 AM
Wow i did not know u guys beat the record, thats the first car we looked at on thursday at memphis. I meant to get the car on video but i ended up racing my car lol. Congrats to everyone who had a part in the car and good luck at the cam only and beating your own 9.82(that's fast as hell for a n/a 346 on a stock bottom, BAD ASS MAN)

Trevor @ Texas Speed & Perf.
10-29-2008, 08:47 AM
Yea! It's Trevor! :jest:



mongoose_ss, we haven't made any plans yet, probably post in the TX forum when we make it down south.

For the record, I'm 6' tall. ;) Joseph and Jason were mad at me because I refused to fast a few days before the race. :D

casper383
10-29-2008, 03:19 PM
I'm from the centex area i would love to see this car in action! Post up when yall plan on goin to San Antonio!

LS1 SPEED
10-30-2008, 11:11 AM
congrats on the win and killer results

walker94z28
10-30-2008, 02:30 PM
Congrats to all of the TSP guys. I had a blast and enjoyed meeting you guys finally. I can now put a name with a face. Great job guys.....

gnx7
11-05-2008, 01:19 AM
Congrats on getting in the 9's with such a basic combo. Your mph running an automatic is very impressive. Certainly a top end beast.

You mention a TH200 transmission. Is this a TH200-4R? What is it out of?

What is the intake manifold?

If you need a 145lb driver I'm available :)

Trevor @ Texas Speed & Perf.
11-05-2008, 10:14 AM
Congrats on getting in the 9's with such a basic combo. Your mph running an automatic is very impressive. Certainly a top end beast.

You mention a TH200 transmission. Is this a TH200-4R? What is it out of?

What is the intake manifold?

If you need a 145lb driver I'm available :)

The TH200 does not have OD or lock-up vs. the 200-4R that does. The intake is a ported FAST 92mm, and we're running a PTM 95mm throttle body.

You're lighter than I am, but I'm not ready to give up my job yet. ;)

smok'nZ
11-05-2008, 03:01 PM
wow how do you get down to 2800 with driver?

FiredUpZ28
11-05-2008, 09:49 PM
oh its possible.... One article had a 94 Z28 Camaro down to 2900 or so with a decent amount of interior intact.

tektrans
11-06-2008, 10:07 AM
oh its possible.... One article had a 94 Z28 Camaro down to 2900 or so with a decent amount of interior intact.

I wouldn't mind reading that article, got a link?

Sales2@Texas-speed
11-06-2008, 11:11 AM
wow how do you get down to 2800 with driver?

It was 2858, and there's plenty of metal left to cut out if we wanted to get drastic. We haven't swiss cheesed anything under the body panels at all!

The Alchemist
11-07-2008, 01:24 PM
Are these the new cylinder heads you guys are supposed to come out with soon? Any eta on them?

Sales2@Texas-speed
11-07-2008, 02:31 PM
Are these the new cylinder heads you guys are supposed to come out with soon? Any eta on them?

You got it! Hoping to start shipping them in time for Christmas!

camscam02
11-07-2008, 06:21 PM
can we get interior pics possibly?

The Alchemist
11-07-2008, 07:18 PM
Any more info on these heads??? I thought I remember seeing a thread during the summer about a new non factory casting you guys were introducing.

gator's 99TA
11-07-2008, 10:19 PM
any pictures of the car? other than track or bumper standing pictures.

Mike75356
11-08-2008, 04:40 PM
nice run man thats getting quick for a stock sb

djsanchez2
11-18-2008, 02:52 PM
Congrats guys , GREAT times for a stock ci and bottom end car :hail: :hail: What rearend you guys running?


I'm interested in that article too.....

ATLSS
01-03-2009, 10:34 PM
I have a couple of questions:

1. I take it this car isn't tuned SD since you're using the TS 100mm MAF, correct?

2. Can you share any pictures of under the hood and inside the car?

Thanks! And congrats on an awesome time!

-Joseph-
01-04-2009, 12:31 AM
I'll see if I can dig up some pics in the next few days, I think I have some at work.

No its not SD tuned, it has a factory 99+ F-body harness and PCM with the emissions removed. It uses the TSP 100mm MAF with the adapter harness. I don't think it is holding it back much but SD would be interesting to try at some point.

Thanks for the congrats!

-Joseph-
01-04-2009, 12:36 AM
Few questions I also missed:

Running a stock length Moser 12-bolt, 33 spline axles and spool, with 4.30 gearing. It could use a swap to 4.10's, as the 4.30's currently just give it enough to nudge past the traps.

ATLSS
01-04-2009, 08:15 AM
We really appreciate the transparency from you guys on such a bad ass car man... And I for one look forward to seeing pictures!

A few more questions I have:

1. What fuel are you running?

2. What cc are the combustion chambers?

3. Did you have to fly cut the pistons?

Thanks man!

And when are these bad ass heads coming out? Any info on them??

ATLSS
01-15-2009, 08:46 PM
/\ Bump for a response!

HUNTER02SS
01-15-2009, 09:26 PM
Congrats guys, that is great! My only question is your said "Stock ShortBlock",
but you added ARP rod bolts?? ARP Rod bolts are not "STOCK" per say?
None the less, that is very impressive! Congrats!

BillyBob750
01-16-2009, 12:57 AM
Thats awesome. Id like to see you guys throw some stock heads on there, and go after the cam only record.

-Joseph-
01-16-2009, 03:22 AM
Congrats guys, that is great! My only question is your said "Stock ShortBlock",
but you added ARP rod bolts?? ARP Rod bolts are not "STOCK" per say?
None the less, that is very impressive! Congrats!

Thanks for the congrats, but to answer your question:

I'll put stock rod bolts in it if it matters that much. I don't care if we scatter this engine or not. The rod bolts were added for dyno testing purposes, not to add durability to the engine while in the vehicle. The rod bolts are worth more than the shortblock to me. I think the stocker's will last quite a few passes myself, which should back up the time again if needed. :)

Sorry for the delay in pics, I've been busy and this car is on the lift with an immobile car under it, makes it hard to lower the car by myself.

I'll find out the info on the heads, I believe we were running 12 - 1 compression, but don't remember. I think at the race we had 113 Sunoco. It varies with what we can grab in the last 5 minutes before leaving town usually as we cannot keep fuel on out premises.

These pistons are flycut as we planned on testing larger camshafts than the MS4, but didn't make it that far before seeing the numbers flatline. MS4 made the best power with the 215cc heads.

matthewjosh
01-19-2009, 05:55 PM
Thanks for the congrats, but to answer your question:

I'll put stock rod bolts in it if it matters that much. I don't care if we scatter this engine or not. The rod bolts were added for dyno testing purposes, not to add durability to the engine while in the vehicle. The rod bolts are worth more than the shortblock to me. I think the stocker's will last quite a few passes myself, which should back up the time again if needed. :)

Sorry for the delay in pics, I've been busy and this car is on the lift with an immobile car under it, makes it hard to lower the car by myself.

I'll find out the info on the heads, I believe we were running 12 - 1 compression, but don't remember. I think at the race we had 113 Sunoco. It varies with what we can grab in the last 5 minutes before leaving town usually as we cannot keep fuel on out premises.

These pistons are flycut as we planned on testing larger camshafts than the MS4, but didn't make it that far before seeing the numbers flatline. MS4 made the best power with the 215cc heads.

I have the Ms4 and am looking to get heads. What cc can i go before having to fly cut?

Jeezer
02-01-2009, 05:46 PM
that 60ft is sick! must feel amazing

matthewjosh
02-01-2009, 07:35 PM
What kind of suspension are you guys running? Front rear?

wichoms4
02-03-2009, 04:48 PM
sorry to say but my budy was spinning his h/c ls2 motor 7,200 before be spun a bearing after the arp rod bolts, the motor has not spun a bearing since n spins the motor to 7250. so the arp rod bolts make a diff.

slowandrichws6
02-03-2009, 05:41 PM
hell yea trevor keep up the good work over there!
-Austin

SunsetOrangeZ
02-03-2009, 07:49 PM
Thanks!

Step 1: Unbolt and remove EVERYTHING!
Step 2: Put back what you need.

That's about it. :D

Thats some funny stuff right there, but it's the truth when it comes to weight reduction.

Great times by the way!

z28_YOU_HO
02-03-2009, 09:56 PM
Id love to feel that launch!

Jon@Texas-Speed
02-04-2009, 03:31 PM
sorry to say but my budy was spinning his h/c ls2 motor 7,200 before be spun a bearing after the arp rod bolts, the motor has not spun a bearing since n spins the motor to 7250. so the arp rod bolts make a diff.

Right. They definitely make a difference. I think what Joseph was getting at is we put them in the motor b/c we were engine dyno testing heads/cam combos with this short-block. Due to the amount of pulls we used them for longevity. However, if ARP rod bolts somehow make it an illegitimate time, we will throw the factory rod bolts in it when we go back to the track this month to bump the record again. The factory rod bolts should live long enough to do what we are looking to do. If the motor blows up, we'll just throw another one in the car and go at it again! :D

Jon

Jon@Texas-Speed
02-04-2009, 03:34 PM
What kind of suspension are you guys running? Front rear?

BMR Upper and lower A-arms up front with QA1 Double Adjustables and Madman limiters.

The back has a BMR X-treme bar, BMR LCA's, QA1 Single Adjustables, and Madman Torque Arm.

All the suspension is tuned by Madman!

sloganish
02-04-2009, 09:01 PM
this is badass. wana trade for my cobra?!??

dudeman
02-05-2009, 08:01 AM
what kind of power at the wheels are you guys making with this set up?

wichoms4
02-05-2009, 07:43 PM
Right. They definitely make a difference. I think what Joseph was getting at is we put them in the motor b/c we were engine dyno testing heads/cam combos with this short-block. Due to the amount of pulls we used them for longevity. However, if ARP rod bolts somehow make it an illegitimate time, we will throw the factory rod bolts in it when we go back to the track this month to bump the record again. The factory rod bolts should live long enough to do what we are looking to do. If the motor blows up, we'll just throw another one in the car and go at it again! :D

Jon




very ture. but still 9's is not a easy task to break with the stock 346ci, love your cam running it on my car right now. how much for the heads without srings just valves????

-Joseph-
02-05-2009, 08:52 PM
dudeman: About 500rwhp

matthewjosh
02-09-2009, 06:14 PM
How does the gearing on the th200 compare to the 4l60e? If you have the 4l60e and same gear what would you be turning at the traps is what I am getting at?

9sec93
02-17-2009, 03:00 PM
3rd gear should still be a 1:1 ratio on either trans. so it would be the same.

99mongooSS
02-19-2009, 11:36 PM
well looks like im stickin with my cam afterall...I need to get those 215cc heads.

ndfrsd6
02-26-2009, 12:19 PM
what size stall do you have ?

Spectre86
03-02-2009, 03:55 AM
wow. nice job guys.

06MUSTANGGT24V
03-02-2009, 01:28 PM
Yes congrats again, i was one of three guys that talked to you about it forever.

1bdtrk
04-04-2009, 12:25 PM
This is still efi right, not carbed?

Coach 02 A3 Z/28
04-05-2009, 08:58 AM
This is still efi right, not carbed?


Yes.

Coach

-Joseph-
04-13-2009, 11:57 PM
Definitely EFI:

http://farm4.static.flickr.com/3358/3440050239_f358d2c976.jpg