Trex Help...

Reply Subscribe

Thread Tools

Search this Thread

Apr 24, 2005 | 01:56 PM

Black8Banger

Thread Starter

9 Second Club

iTrader: (9)

Joined: Jul 2004

Posts: 641

Likes: 2

From: South Carolina

Trex Help...

Ok, the car is a drag car, driven on the street less than 3 times a month. Ive got a Moser 9" w/ 3.70s, TH-400 w/ 3800 stall and a transbrake and 26" tall tires. Running stock heads and a 228/232 cam my best et has been 11.6s on 3455 race weight. I have to shift around 6200 with that cam. Im not happy with shifting at 6200. I wanna go all the way to 6700-6900. Is the Trex what I need? If I get this Trex, do I need to go to a 28" tall tire? change rear end gearing? Thanks

Josh

Apr 24, 2005 | 02:05 PM

luv2spd

TECH Fanatic

iTrader: (1)

Joined: Feb 2004

Posts: 1,152

Likes: 0

From: Newton, KS

Yeah, the t-rex needs to be shifted at 6800-7000 to net the best times.

Apr 24, 2005 | 02:11 PM

Black8Banger

Thread Starter

9 Second Club

iTrader: (9)

Joined: Jul 2004

Posts: 641

Likes: 2

From: South Carolina

so it would definately be a good addition to my setup...even though its a th400 and not a 6 speed

Apr 24, 2005 | 08:49 PM

Josh

TECH Fanatic

iTrader: (9)

Joined: Feb 2002

Posts: 1,061

Likes: 0

From: West Lafayette, IN

Quote:

Originally Posted by Black8Banger

so it would definately be a good addition to my setup...even though its a th400 and not a 6 speed

I would think so. It doesn't "peak" as high as people make it sound, but it carries its power for quite awhile. You would probably want a numerically higher gear ratio, as well.

Josh

Apr 24, 2005 | 09:55 PM

DanZ28

10 Second Club

iTrader: (5)

Joined: Nov 2001

Posts: 3,412

Likes: 0

From: Cali/Bay Area

The Trex typically peaks around 6800 and carries well into 7400 RPM. Yes you will benefit from gears with this cam as well, 4.10's minimum I would say and probably loves 4.56's..

Dan

Apr 24, 2005 | 10:06 PM

tim99ws6

9 Second Club

iTrader: (31)

Joined: Oct 2002

Posts: 3,175

Likes: 2

From: Nashville, TN

Quote:

Originally Posted by DanZ28

The Trex typically peaks around 6800 and carries well into 7400 RPM. Yes you will benefit from gears with this cam as well, 4.10's minimum I would say and probably loves 4.56's..

Dan

4.56's in a TH400 huh....

Apr 24, 2005 | 10:23 PM

35th SS

TECH Addict

iTrader: (2)

Joined: Dec 2001

Posts: 2,622

Likes: 1

From: Hawaii track track.

ya thats what I say on a th400.good luck.using a 28x12.5x15 et streets here.

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Brett Foote

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Apr 25, 2005 | 12:52 PM

Black8Banger

Thread Starter

9 Second Club

iTrader: (9)

Joined: Jul 2004

Posts: 641

Likes: 2

From: South Carolina

so probably use 4.10/4.11 with a 28" et drag and shift around 7k?

Apr 25, 2005 | 02:57 PM

#10

calongo_SS

10 Second Club

iTrader: (7)

Joined: Feb 2004

Posts: 2,070

Likes: 1

From: Victoria, TX

I think most people have had the best results shifting around 7200. I would think 3.90's to 4.11's should be pretty good for gears. You'd probably see some ET improvements with a 4200 or bigger stall also.