tbyrne

I haven't posted anything about the car in awhile. This is mainly due to the fact that I haven't been to enthused about the numbers but things are starting to pick up. Today's pull produced 672.9hp at about 5800 and 618.6 ft-lb torque at 5200. One restriction that I see is the exhaust flowing through a 2.5" Y-pipe. That will be replaced with a 3" this week and then we can see about getting into the 700+ range.

A quick rundown on the car -

ARE 409 stroker motor topped with a set of Stage II LS6 heads and an LS6 intake. Internal components include - Ross pistons (8.9:1 compression), Lunati crank, rods and cam (.556/.578 112)

ATI F1 supercharger making about 18# of boost

1 3/4" TTS long tube headers with a 2 1/2" Y-pipe and a Corsa exhaust

4L60E with a Vigilante 3500 converter

Future upgrades include a larger cam and possibly tapping into the bottle that is mounted in the back.

Tom


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2001 Supercharged 6.0 Suburban-15.87 @ 88.41
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1998 Vortech powered Z-28- 10.89 @ 130.03 with 346 motor and Vortech - new ETs with 409 motor and ATI F1 supercharger coming soon!
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JurisAg02

Sounds like you got you a slow one there Tom
Rick

96SFLZ

Awesome numbers Tom, congrats. Let us know the final dyno numbers and times, whenever you get to the track.

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Aaron
Black ’96 Z28 *sold*
SSM '02 Z28
Pro 5.0, FRA, MTI lid
¼- 13.21@108.2

ChevyGuy

Tom, is the 4L60-e in that combo internally stock?

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1999 Camaro SS #2283
B&M Ripper
MTI Induction

transam8

Sweet!!!

-Mike

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99 Onyx Black SS A4 #2373

BMR SFC's, BMR STB,BMR LCA's, FLP L/T's, Magnaflow cat-back, Direct-flo lid w/Holley filter,SLP bellows kit, SLP bow-tie grille, Sullivan pedals, MacEwen gauges w/ T/A bezel, Mike C's SS frc's,

PhantomTA

To, your problem is in your exhaust.

The y-pipe is too small and the corsa isnt helping either.

Thats 3" y-pipe and 4" mufflex territory.


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DaveD
1998 WS6 #207
-ARE Stage II Head/Cam
1998 Regal GS
-It Has Boost

The Phantom of CamaroZ28.com
Http://PhantomTA.cz28.com

tbyrne

The stock 4L60E was upgraded when the car was converted from an M6. It's held up to 25+ trips down the track in the last 18 months along with over 50 dyno pulls.

There is now a 3" Y-pipe under the car along with a cutout. A larger exhaust would still be a benefit over this. Laying into the throttle to hard totally pisses off the tires. Then they scream and start smoking

Tom

Eric @ DMS

Great numbers your kicking out with that beaSSt. What y-pipe did you end up going with? That seems like the culprit that would be hurting your numbers significantly at this point. Are you planning on attaching a larger exhaust (i.e. 4").

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Bloodztone

Great numbers Tom! That is one monster car. I hope you get some more runs in on video.

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* 1998 Trans Am A4
* 292 RWHP / 309 Torque
* before cam and FLPs
* 330 RWHP / 334 Torque * before stage II heads
* mods: G2 sway bars, KB DD subframes, Tbyrne LCAs - panhard rod - & ported MAF ends, GTP Stage II heads, TR 224/224 112LSA 561 cam, FLPs, whisper c/f lid, K&N, HAL/QA shocks, NGK TR55 plugs, FTRA, custom tuning and a few other things.