I've searched quite a bit for an answer. However I haven't found a lot for my question. I am getting ready to install my GT3540R turbo kit this upcoming week. I was wondering if it is at all possible to see 400whp on pump gas with bone stock evo 8 camshafts. The supporting mods will be walbro 255, precision 880's, clutch, and a full 3" turbo-back. As I have stated before, I've searched and searched but haven't found much information on the stock camshafts themselves and what they are capable of. Anyone with experience, I would greatly appreciate it if you could chime in .

 

Not the best comparison... but I had a AMS 35R on a stock Evo 6 2 litre for a while and have to say I did not like it very much. A lot of lag for not much more power. Yes theoretically you should make more power with 35R boost for boost because of less exhaust back pressure, but for a mostly stock motor I'd highly recommend a stock turbo.

Now once I put a 2.4, ported head, and cams.... well then that same boost felt a whole lot different with the 35R.

That said.. you'll be getting a lot more top end and I think Evo 8 cams and engine a bit better than Evo 6.

 

+1 but on a 50trim?

 

With your mods and a good tune 370-400whp on pump 21-23psi. On stock motor and cams, lots of mods a 35r pump + meth 30psi I made 465whp on a mustang dyno (by the way that was a 2.0 ago) but I have a Evo 9. You can run meth but do so at your own risk

 

I will never run meth, I'd rather spend the money on race gas and know i'm going to be safe .

 

glad to know someone is not willing to learn the hard way

 

Any other input, is there anyone out there running this exact setup that would like to share there numbers?

 

lol your gona hate the 35r on pump...they suck unless ur running meth or alcky on them..good luck wit that i say trade it for a 3076 or a 3065 def

 

I have a FP3065 and am currently running on a half tuned 93 map @ 21psi. I'm still impressed by it's power coming from a completely stock Evo. Had some problems in the middle of tunning so it was left very conservative until it's fixed and i return to re tune. To me (but not to all) lag is overrated! i thought i wouldn't like it, but man once boost hit, it made it all worth it. Now i just downshift more or stay in a lower gear no biggie. A 35R is just fine on pump. I actually wish i would of just stepped up to a 35R but I'll max out the 3065 first then just swap CHRA over to the full 35R.
As for running w/stock cams, i highly reccommend upgrading. I feel that with a larger turbo you should want it to perform it's best & operate in it's efficiency zone and to do so you need ALL supporting mods, simple as that. Bigger turbo needs bigger cams to push more air through. If 400hp on pump is all your looking for then there are way more better options out there than a 35R.

 

I understand that there are better options as far as strictly pump gas turbos go, rather then a 35R. However, I was also looking for a good race gas turbo as well, and want to make very good power at higher boost levels. That is why I opted to go with the 35R, I just want to know if anyone has seen 400whp on pump gas with stock camshafts with a similar setup .

 

Not to rain on your parade, but you should prolly look into the FPgreen or maybe a 50 trim if you dont plan on running meth or race gas a large percentage of the time. Those are much more streetable turbos for you power goals. Even then that big of a turbo with stock cams will not be very fast. The point of having a big turbo is to have big top end. You need at least 272's(if not 280's) to take advantage of a turbo that big. my 2c

 

It really seems you got too big of a turbo for your needs being that your so concerned with keeping stock cams. You probably won't get any replies from ppl using a 35R w/stock cams cause there aren't any! Once ppl decide to go that route, or any bigger than stock turbo for that matter (except for maybe a IX) they know cams and fuel are a MUST. Simply put, that 35R will be sleeping w/stock cams. What's the point in having that turbo if u aren't going to make it happy?Hope u understand this

 

good replys but non to answer would it be ok to do this with a 50trim for a lil while

 

it blows my mind that people would upgrade their turbo's, esp to a 35r, without doing all the supporting mods first. same goes for a 50 trim or any other turbo upgrade.

that's like saying "I want to go skydiving but i want to hear from people who did it without a chute....". It's understood there are basic requirements you have to do first before you can jump outta that plane.

you REALLY OUGHT to follow the basic series of upgrade steps to get the best performance...i.e. full bolt-ons before you even THINK of upgrading your turbo.

 

Spoolin, you are in for a rude awakening. There is a reason you do all the bolt-ons, cams, etc then uprade the turbo. If you think youre taking a shortcut, you are in for something. Your car is to come into boost past 5000rpm, provide hardly any torque and not even much hp. The whole point of getting a 35R is to have massive topend, which you wont have, even on race gas with the stock cams, FMIC and other mods. Couple that with slow spool and you have a horrible powerband and a car that isnt fun to drive anymore.

A stock turbo car that is full bolt on and cammed will blow your doors off. Even on race gas, with stock cams, and other stock parts, youll get walked by smaller turbos which have boatloads more torque, better powerband and much better spool. Not to mention they will be more fun to drive. I know you want a turbo thats good on race gas but guess what, just about every turbo shines on race gas, even the stock turbos can run over 120mph on race gas. The Green can mid to high 120s too. These smaller turbos with full bolts on will make a 35R all stock look silly. I think you better reconsider your decision, because right now, its an awful one.