whats after bolt ons
The tune I would do, but that shouldn't be more than $450 on a dyno.





QUOTE" this shop wants to port intake and throttle body and dyno for 1000 bucks..what would u do "
I will try to throw some facts into the post
Most dyno tunes are around $400-$500.
Porting the TB....... I did this Tb in about 2 hrs. It was for a friend and we did it on the spur of then moment before his tune at Corvettes of Westchester.

If forum member SHANER still does TB Porting, contact him and purchase one of his. Its a work of ART and one of the best Ive seen!!

You will NOT see MASSIVE HP increases with a ported TB. You will see a little better throttle response IF the tuner does the tune correctly.
Porting a LS6 Intake Manifold: Well,, seeing that you can NOT take the manifold apart to port the stuff inside that would make the most difference, all that your going to get from them porting it is some smoothing about 3" up into each intake runner and MAYBE, some blending in the opening for the TB. You are NOT going to see $500 worth of performance increases.


The BEST things that you can do for a hearty performance increase are the following:
LONG TUBE HEADERS
VARARAM
TUNE
For a more substantial HP/TQ increase the above mods and then add:
Cam
Heads
30 lb/hr injectors
TUNE
m6 c5 I agree (a new clutch!)

My stock ZO6 clutch failed after I installed my heads and cam. It didn't like 450 RWHP

Went with the SPEC twin disk!
Bill
The Best of Corvette for Corvette Enthusiasts
QUOTE" this shop wants to port intake and throttle body and dyno for 1000 bucks..what would u do "
I will try to throw some facts into the post
Most dyno tunes are around $400-$500.
Porting the TB....... I did this Tb in about 2 hrs. It was for a friend and we did it on the spur of then moment before his tune at Corvettes of Westchester.

If forum member SHANER still does TB Porting, contact him and purchase one of his. Its a work of ART and one of the best Ive seen!!

You will NOT see MASSIVE HP increases with a ported TB. You will see a little better throttle response IF the tuner does the tune correctly.
Porting a LS6 Intake Manifold: Well,, seeing that you can NOT take the manifold apart to port the stuff inside that would make the most difference, all that your going to get from them porting it is some smoothing about 3" up into each intake runner and MAYBE, some blending in the opening for the TB. You are NOT going to see $500 worth of performance increases.


The BEST things that you can do for a hearty performance increase are the following:
LONG TUBE HEADERS
VARARAM
TUNE
For a more substantial HP/TQ increase the above mods and then add:
Cam
Heads
30 lb/hr injectors
TUNE
m6 c5 I agree (a new clutch!)

My stock ZO6 clutch failed after I installed my heads and cam. It didn't like 450 RWHP

Went with the SPEC twin disk!
Bill



Don't waste your money on porting the LS6 manifold. Put it toward other mods like LT's or a cam. My car made 410rwhp with an Blackwing Intake, 228R from Texas Speed, and Kooks 1 3/4" LT's. Stock LS1 heads and LS6 intake.
Sounds to me like some people are blowing smoke to make a few bucks off you.
Bill Curlee knows what he's talking about, and always gives good advice......







