LS6 intake throttle opening size???
Thread Starter
Burning Brakes
Joined: Mar 2010
Posts: 1,189
Likes: 4
From: Freeport, FL
LS6 intake throttle opening size???
What is the opening diameter of the LS6 intake (also 01-up LS1)?
Also, is the stock throttle body a 75mm or 80mm? 'Cause I know that the MAF was larger.
Thanks guys
Also, is the stock throttle body a 75mm or 80mm? 'Cause I know that the MAF was larger.
Thanks guys
Drifting
Joined: Oct 2006
Posts: 1,724
Likes: 23
From: Minnesota
I often read that the stock TB is 78mm. If you measure the rear bore of the TB I believe it is 78mm. However, the stock TB does not measure 78mm all the way through. I believe that the stock TB is actually considered to be 75mm. The LS6 (actually all corvettes 2002+ (maybe its 2001+) have the same intake) and the LS1 have a 78mm bore.
Thread Starter
Burning Brakes
Joined: Mar 2010
Posts: 1,189
Likes: 4
From: Freeport, FL
I often read that the stock TB is 78mm. If you measure the rear bore of the TB I believe it is 78mm. However, the stock TB does not measure 78mm all the way through. I believe that the stock TB is actually considered to be 75mm. The LS6 (actually all corvettes 2002+ (maybe its 2001+) have the same intake) and the LS1 have a 78mm bore.
I see all these TB's 80mm and larger and wonder if the intake would support them.
I will probably get curious enough tonight and remove the TB and measure. lol
Team Owner
Joined: Dec 2008
Posts: 35,874
Likes: 1,600
From: Honolulu HI
I'm almost positive that the opening is 78mm. The BBK 80mm TB comes with a thin spacer, which is really a reducer to bring the TB bore back down to the intake opening size. Always thought that was an absolute waste.
