The 50 trim is just a few hundred laggier than the stock. I had a stock block AMS 50 trim kit and it was boosting around 3800-3900 rpms. You have to remember that a GT35R kit will spool up around 4100-4300 rpms unless I am misinformed.

I switched over to a 2.3 50 trim and all I can say is damn. that car on 93 with meth was 499 whp and 463 lbs of torque.

That was a good setup I thought. Each to his own, you might want to look at doing a 2.3 with all the bolt ons on the stock turbo.

Your torque will out run your horsepower and spool up would be stupid quick.

If you are just autoxing the car, I believe that would be your best combo. stock turbo with a 2.3.

My thoughts....

 

I'm right there with you. I was recently told by a DCEvoClub member in person he was going to run a 2.3 and 37R and have "full boost by 2900". Regardless, AMS should be more clear on their website. That kind of false advertising/information is detrimental to everyone in this community.

 

You are quite misinformed. 4100-4300 on a 35R? Not a chance, stroker, stage whatever head, etc...Not happening.

 

You think the 20G-LT with the full race manifold and cams on the 2.0 would be a good setup?

I don't really want to tear apart the motor yet, it doesnt even have 10k on it.

 

Full Race manifold would be an unnecessary expense, but the Green on 2.0 is already proven to be a great combo.

 

Isn't a 50trim making 500 really pushing it. That thing has to be blowing hot air at that power level. I mean a 30r at 30psi barely makes 500/ maybe im wrong but i would think that hot air + road course/AutoX could be dangerous.

 

Yeah, 500whp is at the upper limit for a 50-trim, but blowing hot air isn't some specifically dangerous thing. You still tune for it to keep things safe, and we're talking autox here, which is at most 60 seconds of racing, not all of which is full throttle.

 

I am running a green on a stock lower end 2.0. That setup makes 421 whp, and 400wtq on with an aem on 100 octane unleaded. I am not sure that you could use much more than that. I ended up putting the HKS 4.11 final drive gear in mine because I was running out of 2nd gear everywhere. Now it is good for 75mph at 8000 rpm in second. With that setup, I am virtually never waiting on boost. I have no doubt that a 50 trim on a built stroker that could turn 8500 rpm would make a great autocross motor, but the gains over what I have now would really be only a few 10ths, and would cost a lot. I can actually tune my car for c16 to make even more power than I am now, but I haven't.
Mark

 

What is needed to turn 8000rpm? Is head studs, retainers, and valve springs sufficient? I was planning on doing that and either Cosworth or GSC S1 cams soon.

 

Those numbers are going to be in 4th or 5th gear. The stock turbo with supporting mods will hit full boost somewhere between 2700 and 3000 rpm depending on tune and setup. The 3100 rpm number is going to be with a stroker. The 3600 number is going to be more realistic with a 2.0l

EVOlutionary

 

For autocross use, where you will hit that RPM for just a couple seconds, you don't need anything. I wouldn't hold it that high though for any length of time (llike a road course).

EVOlutionary

 

Well I'm going to do road courses also beginning next month. I'd rather be safe than sorry.

 

Well then you better add Rods and Rod Bolts to your list . . .

 

So is the 20G with 2.3 stroker better or just stick with a 2.0?

 

I now agree! Too much torque = bad for autocross = makes the car very hard to drive smoothly = makes me go . . . .