Right now I am stuck on what direction I want to go right now. I built the car to be a turbo daily driver but didn’t do the research I should have on my set up and now find my self wanting to go a little faster on the track with better consistency. The issue is the car is already turbo and my gearing, cam, and converter are set up more for the turbo then any thing else.

I am still running a stock 346 with stock heads and intake manifold on a TTI 60 trim turbo. The issue is the kit doesn’t leave any room for big power with out swapping out nearly every component and even then is still very limited. I have alky control to allow me to get the most out of the set up but at 16 degrees of timing and just a hair under 10 psi the car is making 451 hp and 507 torque with a built 4L60 and 12 bolt rear. I have also started running a small dry shot 35-50 and the car has responded well to it but is still very inconsistent and the fastest pass has been an 11.4 at 117.

I am happy with the power level on the street and the car is a blast to drive but I don’t want to fork out 4K in parts just to upgrade the turbo system and then have to turn around and build a forged bottom end just to run high 10s.

I have been kicking around the idea of going back to NA and investing In a larger cam and a good set of heads and going back on the bottle for the track. With a good head cam package I fill like I can make close to the same power I am making on boost alone right now and still have the ability to run a good bit of nitrous on top of that to get me into the high 10s and make the car more consistent at the track.

Any input would be great as many of you can see my dilemma.

232/228 115 cam
3.42 12 bolt
RPM stage 5 4L60
3200 converter
TTI 60 trim good for the street, not so good for making real power.

 

I have been thinking about go with your current setup and after a lot of reading I though that 500/500 would not be a problem with that kit. I was looking at puting a bigger turbo on though. Am I wrong about the amount of power I will be making?

 

Yeah, you may have to change a lot of stuff. Almost be cheaper to leave it alone and buy another LS car and heads and cam it!

 

You are running a bigger turbo and a better IC so you should be able to make your goal on that set up.

 

Hmmm I don’t think I would need to change all that much other then the cam and remove the turbo of course. I have a good chunk of time and money in the transmission and rear end as well as other parts of the car and I cant justify going out and buying another project when this has been my baby for 4 years and hasn’t given me one major problem yet with over 100 track passes.

I also figure that I can get about 3000 for the turbo kit, alky control, cam, and other misc parts that come off the car to help cover some of the cost of the heads and bigger cam. I have put 5K up in the bank that was going to spend on upgrading the turbo but now i am thinking NA might be the way to gol.

 

I was just messin with ya. Depending on what cam you end up going with you may have to change stalls as well though.

 

LOL sorry for a second i was worried.

 

Should I upgrade to a TC66 with a .96AR and bigger intercooler, Or should I pull the turbo off and just go with a head/cam package for the street and build a nitrous system for the track. My concern is if I upgrade the turbo, intercooler, and piping will I be pushing the 346 rings at right around 475-500 rwhp. And if I do upgrade the above then the nitrous is coming off for sure. Sorry for all the questions but just trying to do all my research ahead of time this go around.

 

are you getting any KR (Knock Retard) from the engine?

 

No running problems after about 5000 miles of daily driving. The only issue i have had was IAT issues on a 95 degree day at the track. The car started to pull timing near the end of each pass and i was not able to get a good run out of her that day. Other then that the kit has been great.

 

What size flange?

 

Still running stock heads ?

Why not invest in a good set of heads and up your 35-50 shot to a 75 ? Should put you at about the limit for that stock internal 346. Then just enjoy it. Besides, don't Turbo cars make a lot more then the rating on a shot of nitrous ? A 75 shot could be quite potent. Will also keep your IAT's down at the track so you can get a full run in and not have the computer pull timing.

Was your 11.4 at 117 on motor only, or were you spraying the 35-50 dry shot ?

If you do add the heads and a 75 shot, be sure to save for a rebuild. I don't know how long she'll last.

 

That was on a 35 shot. Before that my best time was a 11.6

 

To be truthfull i dont like mixing nitrous, boost, and meth all at the same time. I am not sure how the car would respond to a good set of heads and the 60 trim. I would hate to invest 2K in a set of heads just to be limited by the turbo.