wmcfa

What is the largest throttle body the LS6 intake can hold. Can it hold an 85 mm?

SOMbitch

iTrader: (8)

Unless you get the snout changed by TPIS it is the stock 75mm. Just get it ported by sponsor.

CriminiSS

iTrader: (16)

you can put a 85mm TB on an ls6 intake. I have one for sale if your interested.

wmcfa

how much?

teke184

iTrader: (5)

you can put a larger tb on, but the mouth of the intake is still only 75mm or so.

so that added size is pointless.

kindda like putting a 3" inlet muffler on, but a 2.5" outlet

DoubleTapDrew

iTrader: (1)

I measured the mouth on the LS6 intake and it's 75mm, so that seems like a recipe for turbulence unless you port the LS6 inlet

Mean87SS

iTrader: (21)

Just port the stocker...

SOMbitch

iTrader: (8)

I was thinkin the bolt pattern was different but had a brain fart and was thinkin 90mm like my FAST TB

SSTYCOON

iTrader: (2)

shaner S3

LS1-450

iTrader: (33)

It's not pointless. Using an 85mm in front of a 75mm opening shortens the length of the 75mm restriction. This reduces the pressure drop through the area. Further, it acts as a funnel into the intake, gradually increasing air speed from the filter to the runner.

wmcfa,
Most 85mm TB's are sold w/ adapters & easily connect to the LS6 manifold. Summit sells a good kit @ a good price, if the offer made in this thread doesn't work out for ya. Good-luck

CriminiSS

iTrader: (16)

LS1-450 is right. A larger TB also increases throttle response. Pming the OP.