I've tried searching to find if it is worth getting my stock ls2 throttle body ported or not. Some say there is a better throttle response but no hp. I do have a big cam, long tube headers, cai, fast 102 manifold, corsa exhaust, bigger injectors...everything except having the heads worked on. The heads will be done in a few months but just trying to see if I should do both or just leave the throttle body alone. I won't supercharge nor turbo the car. Thanks for taking your time and helping your vette brother out!

 

I sent mine to peak speed for port/polish dont know about hp gain I remember it definitely had better throttle response + it dont cost
that much to send your stock throttle to someone for porting. At the time mine was just boltons and I felt a difference you have can, intake, etc
I think it would be worth doing

 

Yes, def worth it.
I have a pic at home that showes the specific difference, however better throttle repsonse is the min adv.
You will gain sev horses.

 

How much was it and would I need to get it returned? I read that somebody said if you don't retune it, the car will run lean.

 

no you dont' I didn't. retune when you do the heads
I dont remeber how much maybe $150. Peak speed also edgyvette on the forum ports them as well
I sent him my ls3 intake for porting

 

I did the exchange program with a vendor and got a Vmax ported tb. Definitely worth it if you have supporting mods. Mine is also an LS2 with a ported FAST.

 

If it was MINE, instead of porting the stocker, I’d spend a little more for a Nick Williams 102mm TB.

 

Here's the before and after of a ported LS2 TB:



IIRC, it's a gain of ~5hp on a moderate bolton setup.

 

Gain will be ~ 5 rwhp, more important will be the throttle response.
102 TB = Waste on ls2 , below 500+ rwhp imo.
I would and did get the V-Max Velocity Ring to eliminate the step/gap
between the 90 MM TB & the 102 MM entrance to the plenum,
that will definitely help the low speed/idle transition with the larger cam

 

Thank you for your insight in reference to the specifics. Indeed, my reference point is from one of the smaller vendors that ran some tests in this regard.

I beg to differ on the 500 rwhp benchmark - it would be much lower, based on the vacuum properties of air as it's inducted in this case. But I digress...

I'm interested to see you have the transition from 90 --> 102, that is the best utilization of implementation.