Well, 4.39sec 60-100mph, 2.95sec 75-100mph on the R and E85.

 

Sounds slow

 

the problem is everyone who professionally ports the lnf head will only work with a new head. Zzp & Pwerks specifically. I'm probably gonna get the ZZP head. It seems they have had the most experience on this head. I have a local guy(nick smithberg) who will do it but that will require a R&D test head or two which will be more expensive in the long run. I'm all about R&D but I think I'll leave this one to the experts.

Pretty damn good. I was just under 5sec 60-100 on stock turbo(420wtq) and 4.45 gears. Are you using 4.05s?

 

He's 3.82

 

Running full e and the R.
4.45 gears on the r ,+, or stock get you out of the efficiency of the turbo having to spin to 7300 to get to 100mph. Yeah the r keeps up better than stock but it's dropping power at 7300.

 

What kind of clutch you guys would recommend using ? I was thinking either gmpp or ky stage 3+ ?

 

Southbend stg 4

 

How much torque are you expecting to put through it? Big difference in price between the gmpp and all the rest. How long do you want it to live for?

 

I dunno...I have equinox intake n exhaust with fueling lobe upgrade, phenolic intake manifold n throttle body spacer, k04r turbo (haven't put those in yet until transmission n clutch in 1st). Maybe getting TTR intake manifold or ported intake manifold and definitely getting 4.05 lsd transmission with it. I've heard great thing gmpp clutch n it does hold up 500hp from what I've seen some Cobalt owners surprisingly.

 

If u look at my 500hp dyno it has really smooth power delivery and only 427tq. The R is the exact opposite. Get the southbend

 

Ah...Do you have to run zzp tob spacer to run with southbend ?

 

No that thing is silly 1/4 is way too much. A 1/16 would be good

 

I could go on for days about clutches. I wish I would've just saved my pennies and got a balanced Spec setup or the CM twin disc. KY twin disc also looks promising but heavy.

I've been running the KY stg 3 for 4ish years now. I've sent it back to KY to be serviced/remanufactered twice (for a fee) because of slipping but I don't take it easy on the clutch. 2nd gear burnouts, 6k sidestep launches @ 7psi on slicks, and NLS all the shifts. This last one they made for me now has an ET record and several 1.7 60' lunches under its belt. The clutch disc has two different materials on each side of pucks unlike the previous ones. In the end its a cheaper clutch, you get what you pay for. KY took care of me when I needed it but was a PITA to deal with. I just need a better clutch for what I do with the car.

Sry yelcal, just seen you said ky stg3(+)... It's a less agressive clutch than the regular stg 3 with less tq capacity and less bite.

 

I would hate to daily your clutch by the sounds of it......omiotec always said the balanced spec 3+ clutches were good. For drag I would imagine the twin disks would be the way to go but the trans better be strong.
The gmpp is a good clutch for the money but depending on driving style I'm not sure how long it will take the abuse. I put probably 15-18 passes on mine at the track this year along with 2nd gear burnouts and so far it's held up well. I'm not expecting it to last forever though.

 

Hey Folks, did you guys know anything about f23 transmission swap ? I'm reading in Cobalt SS Gang and guys are talking about it n saying it's stronger than f35 transmission.

 

keep in mind clutches are rated on torque capacity, not hp.

 

That was my point. My car makes the same TQ as a R probably but it comes in way smoother so is easier on parts

 

Yes it can be done. There are several parts to change along with it. I've heard the trans itself will take quite a bit of power and is cheaper. The drawbacks are changing mounts, cables, adding a lsd and purchasing good axels as the f23 doesn't have as good of axels as the lnf axels were. So I've heard. They are cheaper to purchase outright though.

 

not to mention abundant.

 

I love my southbend.

 

I call dibs on his lnf axles if he f23 swaps

 

Driving the R really is fun honestly. I know its not the fastest but its still a good turbo to have a good time with.

 

Well I caught the seller of the GMPP clutch and flywheel I bought and switched my order to just the flywheel as I found a KYS3 for fairly cheap.

So I'll be going that route.. only thing is he also has a 6758 with 5k miles on it and he'll sell me both the new KY and zfr for 1300usd

 

Yeah I saw that too, that's a good deal

 

Sounds like a good deal