Is there something wrong here??
I have a 1999 Trans Am WS6 6 Speed
I made 377 RWHP with:
Stock LS6 Heads/Cam/Intake
Pacesetter Headers
SLP Lid
Stock Gears
Stock Rear End
I added a 228/232 112+5LSA Cam and a Borla Exhaust, Sub Frame Connectors, Rear Lower Control Arm, Torque Arm.
My RWHP only went to 382 but my torque went up by about 25. (Although I do notice a HUGE difference in response and speed)
Does this make sense or is something fuckt on my car?
Same Dyno as last year, pretty sure it's uncorrected.
Cam Specs: Intake Duration @.050= 228
Exhaust Duration @.050= 232
Intake lift= .600
Exhaust lift= .595
LSA= 112
Intake Centerline= 107
Exhaust Centerline= 117
Cam Lobe Family= HR5
Get a good tune and see what happens. My guess is you will be very happy after that is done.
Keep us informed. Good Luck!!!
Trending Topics
The Best V8 Stories One Small Block at Time
Call Texas Speed and tell them what is going on. They may have some ideas. They have helped me out many times.
Who did the install for you? Maybe someone installed it off a tooth or two?
Good Luck!!!
Look on the for sale section and see if you can get a set of 5.3L Stage 2.5 heads from Texas Speed. New they are only like $1,100. So, you should be able to pick up a used set for around $600 - $700.
That should put you at about mid 390-400RWHP.
Look on the for sale section and see if you can get a set of 5.3L Stage 2.5 heads from Texas Speed. New they are only like $1,100. So, you should be able to pick up a used set for around $600 - $700.
That should put you at about mid 390-400RWHP.
https://ls1tech.com/forums/dynamomet...k-results.html
Is it possible after the installation of new NGK plugs (cause i think i still have stock ones) and a wide band(air fuel) gauge plus a street tune will help bump my numbers up more?


