FunCool

Just ordered a TB for my car a 102mm. Rob at Champion motors is going to port my snout to fit, got a 90mm on right now. o ya thanks Rob for the great deal!!!!What I want to know is anybody gone from a 90mm to 102mm and if so how much power did they see? Rob tells me that on ls7 n/a motors see something like 20rwh!!

0Rob@ChampionMotors

I think we should change the order to a 108mm like the Zr1 guys. All we have to do is cut and weld a bigger flange. Our Master tuner Kevin has tuned twin 90s large cam with stock driveability.

tlaselva

Where's my 102mm TB?

0Rob@ChampionMotors

On order with FunCool's

LedfootLarry

I did a 102, bigger CAI , and full 3" exhaust all at the same time.
But was retuned on a different Dyno, and went Speed density.
Lots of small changes, but biggest change IMHO, was the TB.
I saw 55 rwhp , and 10ftlbs rwtq increase .
Good luck

FunCool

Where do we get this 108mm tb?

FunCool

So how much power are you making and how much boost?

FunCool

You need boost 1st!!!!

LedfootLarry

705/660
13 lbs
No meth
No juice

mlt

Cant wait to see how this turns out.....just getting car back from Champion who added headers /cam....the 102 TB and some porting will be next ..... please keep us posted!

tlaselva

Saw your car at Champion a week or two ago.

Saw what you had done, that ZR1's gonna be a monster!

mlt

I hope so....can't wait to go for a ride sadly it may be a while, its coming back on Monday in a trailer and back into hibernation. Again thanks to Rob and the guys at Champion for a job well done

FunCool

I know how you feel!!!! Soon we can drive the cars! You made good power on pump gas, the 102mm tb should give us 20 to 30rwh. It was nice to meeting you.

FunCool

That's great power on 13lbs, is that peak boost or what you see at redline? On my dyno run it peaked 15lbs and at redline it made 13lbs, she was around 600rwh and 700rwt. My goal is 750rwh on 20lbs of boost.

mlt

Thanks...Great meeting you as well....here's hoping the furry little rodent was wrong and spring is just around the corner !!!

95vettski

20lbs on 402ci usually makes 900rwhp...just saying

LedfootLarry

How are you going to achieve 20 lbs of boost,
If you already have a 2.4" snout pulley, and
An 8" drive pulley? I assume you rear cogs are
overdriven?
Just think 20lbs will be difficult on that little
blower ?

FunCool

I've been making over 20lbs for years now, just never dynoed it, just street tunning.

FunCool

Don't know about 900rwh, but 900rwt.
Can spin those 345mt drag tires in 3 gear at 100kms.

FunCool

Thats what they said with the new c7 z06. The 1.7 blower is to small and now L.M.R is making 765rwh and V.R is making 760rwh on 8lbs of boost. If you spin it, it will fly.https://www.corvetteforum.com/forums...ds-inside.htmlhttps://www.corvetteforum.com/forums...ngeance+racing