Throttle body question

**01A4Z28** · 02-19-2011, 03:08 AM

So my car already has the ls6 intake on it, just curious as to how big of throttle body i can run? Also would i benefit from a ported throttle body over an aftermarket one considering my car is pretty much stock? And are the ported throttle bodies worth it?

**sjsingle1** · 02-20-2011, 08:04 PM

you cant go to much bigger TB on the intake......just not enough room

**zmg00camaross** · 02-20-2011, 09:24 PM

A ported throttle body was nice and I notice a increase in throttle response.

**fouthgen.rocket** · 02-22-2011, 10:13 PM

I put on the LS-6 intake and had throttle body ported and polished and a good tune the car is so much quicker to me

**Sid447** · 02-24-2011, 09:42 AM

Originally Posted by 01A4Z28

So my car already has the ls6 intake on it, just curious as to how big of throttle body i can run? Also would i benefit from a ported throttle body over an aftermarket one considering my car is pretty much stock? And are the ported throttle bodies worth it?

IIRC,

A professionally ported 78mm TB only shows gains over a stock TB above 5,000rpm and the Katech dyno graph I saw showed about 7hp gain at peak.

It was covered in this book:
http://www.cartechbooks.com/vstore/s..._ID=3086&DID=6

**Blue28** · 02-27-2011, 08:58 PM

You could send it to TPIS and have them do their snout conversion to it enabling you to use a 90mm 4bolt tb. That's if your willing to part with $350, and also buy a 90mm TB.

**98maro** · 02-27-2011, 09:03 PM

IMO with ls1/ls6 after market tb is not worh it.
Stock ported is better. Cheaper to get it done and noticeable power.

If you planning on getting a FAST intake. It will be worth it. Abd you will need to buy aftermarket.

If you just gonna keep the ls6. Just get a P&P stock TB