slammedc5

iTrader: (1)

Aloha gang,
I'm refining next friday because my injectors were to small. I picked up this 80mm throttle body. I have the stock ls6 intake, the stock. 85mm MAF, looks like i can port the hell outta tthis thing. Has a huge thick casting on the bottom. Its a fully CNC machined throttle body. Anyone have one, did you port it.

2win_SS

iTrader: (1)

I'm sure you can get the same gains from just porting the stock TB. no use from going 80mm tb to a 78mm opening. Ya it's not much but sell this BBK and port your stocker. Same gains seeing how a 85mm and a ported 78mm are about the same

slammedc5

iTrader: (1)

I though about doing that, but even tha ported stocker is a 75mm. The ls6 intake is 78mm and the MAF is 85mm. So jumping to a ported 80mm should show gains. Plus is have a big cam, headers, no cats straight exhaust and my redline is 7000rpms. I'm also retuning next Friday. Not sure how much to port it though. There is some thick *** walls on this thing.

svede1212

iTrader: (3)

I mic'ed the LS6 manifold and stock it's 75mm. I ported out that manifold neck to 80mm to take advantage of the larger BBK (that's 13% more cross sectional area than stock). The BBK TB is a nice piece and really doesn't need much porting.

slammedc5

iTrader: (1)

Not doubting your skills at all. Just read alot of times that the ls1 intake was 75mm and the ls6 was 78mm. I think I'll measure mine when i go out to put the tbody on. If it indeed is a75mm. Then my gains will be less than I thought. Bummer. Yeah, I just finished with the tbody. All i did was knock that big ridge down on the bottom half of the tbody.
Damn, now I want to port the ls6 intake hole. But I only have 1 more dayoff til my retune date. If i change mmy date, I'll have to wait another month, all booked up.

2win_SS

iTrader: (1)

No. Ther is no opening difference from the LS1 to the LS6. and u believe they are both 78mm. I have a stocker on my FAST78 and no lip. it's same as my ls6 with tb on it.