what cams to go with ?

[mitsu420at]

i have a 97 gsx.

i wanyt to know what you guys think the most aggressive cams you can go with on a stock head.?.

mods : fmic , type rs bov , 3" dp , 3" test pipe , 3" catback.
stock t25- will upgrade turbo when taxes get here this month

 

[cumpersgsx]

it all depends on what kind of turbo you will be upgrading(since you mentioned upgrading). As of right now you should upgrade the fuel system. Get some injectors and fuel pump with that money and buy them according to what size turbo you are looking at.

 

[gixrman]

There are several ways to go and several different manufactures to choose from its your choice. Since your running stock springs it's limited. I went with FP 1, FP 2 combo and still upgraded the springs.

There are some great write ups in here about cam selection with great issues about idle quality and drivability.

 

[mitsu420at]

i want the lobish idle , but not to the point of stalling and or such.

i want to go with a evo 3 16g.

sorry , i forgot to mention i have a walbro 255 , and evo 9 injectors.

 

[ChvyKc]

The best cam set-up for an EVOIII 16G is FP1/FP2 combo. If you go with a more aggressive cam set-up than that you will shift the powerband higher than the 16G can flow and also end up loosing a ton of torque for a minimal horsepower gain. If I was going to stick with my 16G then I would have went with the DKS1 setup. It's the same thing as the 264/272 combo from HKS and that seems to make the most power on a smaller turbo like a 16G

 

[mitsu420at]

thank you... you are the second person to tell me this.

 

[JayRolla]

A lot of people like the 264/272 combo but usually just for smoother idle. A 272/272 combo is not to aggressive and works good with a 16g. I would get upgraded springs and retainers if you ran this setup, just in case. My mechanic has through valves on just a 272/272 combo.

 

[ChvyKc]

A lot of people like the 264/272 combo but usually just for smoother idle. A 272/272 combo is not to aggressive and works good with a 16g. I would get upgraded springs and retainers if you ran this setup, just in case. My mechanic has through valves on just a 272/272 combo.

In the test that AMS did they only gained around 1 horspower going with the 272/272 but ended up losing 10 ft/lbs of torque from the 264/272 combo. The minimal horsepower gain is not worth the torque loss in my opinion. If a bigger turbo such as a 50 trim is in the future, then I would go ahead with the more aggressive cams and upgraded springs so you can fully benefit from the larger turbo and the increased airflow in the upper rpm range. If the 16G is going to be in the car for a while I would stick with the 264/272 combo for sure.

Edit:
Here are the actual numbers that AMS got with their testing:

264/272:
324.2 whp
333.1 trq

272/272:
325.2 whp
323.4 trq

Someone actually found the old page for the tests and I did a search and found it on here. Here is the link to the original test page that AMS did. It will give you a good idea of just how the different cams stack up.

http://web.archive.org/web/20040125075538/http://automotosports.com/cam_test.asp

 

[projecTSI]

If you are only going with the evo 3 16g and stock head, I would suggest going with the 264/272 combo. And if you want to save yourself some money, look at Comp, BC, and DKS cams.

 

[wvturbo2]

Importevolution has a good deal on some bc cams.

 

[JayRolla]

Ok but what did the dyno slip look like. A lot of times you may lose a little power but you you usually hold the power longer up top. Giving you a longer power band.

 

[ChvyKc]

Ok but what did the dyno slip look like. A lot of times you may lose a little power but you you usually hold the power longer up top. Giving you a longer power band.

Looking at the graphs (they aren't that good in quality), the 264/272 combo's torque curve is almost identical to the 272/272 with it just making that extra 11 ft/lbs right as the turbo spools.

The horsepower graph is almost identical between the two as well. You can see the graphs on that page. For some reason they don't show a graph comparing the 264/272 and the 272/272 but you can compare them by looking at the two different graphs that show the different outputs for the cams.

Both of the cam combos show huge improvement over the stock cams so either way you go you will be making a big improvement. Also, if you are looking for a good deal on some great cams go with the DKS cams from FFWD. Those guys are great and the cams come with a one year warranty (how can you beat that?)

 

[mitsu420at]

didnt know that ^ thank you as well chvykc

 

[JayRolla]

Yea I just looked at that dyno test and it was very informative. Thanks.

 

[ChvyKc]

didnt know that ^ thank you as well chvykc

Yea I just looked at that dyno test and it was very informative. Thanks.

No problem. I just did a lot of research before I bought my cams. I wanted to make sure that I made the right choice so I read everything that I could about which cams make the most power for the setup that I was planning on running.

 

[JayRolla]

Im installing that SAFC finally today. Thanks man for the great deal. My tranny has started to make a lot of bearing noise's and it sounds like the half shafts are binding in the tranny a little. Sucks

 

[wvturbo2]

I alsmost bought some cams n spring n ret. Then i called Visa and they didn't put everything on my last bill so i owe $750. I'm gonna have to wait to get cams now . If my car is running a bit rich would changing the cams affect anything?

 

[TSIMonsteR]

I wish BCrower made 264/272s ... Cams for less then $300 is sweet. (No core charges or anything)

 

[ChvyKc]

Im installing that SAFC finally today. Thanks man for the great deal. My tranny has started to make a lot of bearing noise's and it sounds like the half shafts are binding in the tranny a little. Sucks

No problem, let me know how it goes. I've actually decided to part my car out. I am thinking about keeping the longblock and putting it in a Starion/Conquest but I haven't made my mind up yet.

I alsmost bought some cams n spring n ret. Then i called Visa and they didn't put everything on my last bill so i owe $750. I'm gonna have to wait to get cams now . If my car is running a bit rich would changing the cams affect anything?

Installing more aggressive cams will allow the motor to take in more air causing the car to run lean. If you don't have any way of tuning (or a logger) then you definately need to get something before you buy a set of cams.

 

[JayRolla]

The 4g64 block actually bolts pretty much right up in the conquest. I have a buddy that wanted a 4g63 in his but decided not too. We found out the 4g64 block was a way better swap and 2.4l would be nice.

Let me know if you do part it out, send me a list I'll might want something, expecially those cams.

 

[ChvyKc]

The 4g64 block actually bolts pretty much right up in the conquest. I have a buddy that wanted a 4g63 in his but decided not too. We found out the 4g64 block was a way better swap and 2.4l would be nice.

Let me know if you do part it out, send me a list I'll might want something, expecially those cams.

There is a 4G63 wideblock that will bolt directly up to the starquest tranny but they are apparently hard to find. I am going with an adapter plate and either an R154 toyota tranny or an automatic GM tranny. Just depends on which one is more practical.

If I decide to part it out I will definately let you know. I don't know if I am going to keep the cams in the longblock or not. I haven't decided yet. I have actually been thinking about going with something more aggressive than those and building the head to rev higher.

 

[DGajre777]

FP1/FP2 or FP2/FP2 combo as said above.

If you are getting Evo 9 injectors, stick with a 190 or EVO pump. You won't need a 255 and AFPR with the Evo 9 injectors. The 190 is good for about 400whp, which is more than the EVO III 16G can do.

 

[JayRolla]

Wow didnt know that, I thought the 4g64 was the only wideblock. What kind of cars did they come in.

My buddy has a Conquest right now with the Multiport Fuel injection kit with a standalone ECU and MSD ignition. Its not tuned yet but its going to be a monster. He is only running a 20g stuffed in a td05. Not to efficient.

 

[ChvyKc]

Wow didnt know that, I thought the 4g64 was the only wideblock. What kind of cars did they come in.

My buddy has a Conquest right now with the Multiport Fuel injection kit with a standalone ECU and MSD ignition. Its not tuned yet but its going to be a monster. He is only running a 20g stuffed in a td05. Not to efficient.

I'm not for sure about the wideblock 4G63. That is one of the things that I am going to look into but haven't yet because I am probably not going to stick with the stock tranny.

Tell your buddy that he needs to get a significantly bigger turbo if he want to make serious power. The exhaust side of that turbo is way to small for that motor (even a TD06 20G is to small in my opinion). Just because of the displacement those motors need a pretty big turbine wheel to breath. I still haven't figured out why mitsubishi put that 12A on those cars from the factory.

If you want to make a lot of power with the G54B you have to put a huge turbo on them. Most of the guys that are making big numbers are running at least a .76 A/R T4 turbine side.

 

[JayRolla]

Yea he knows he has the wrong turbo. He is going with a large Garret and most likely will use that on his gvr4. He bought the wrong shit. The spool is crazy though.

Just a quick question wouldnt the 272/272 combo be better to get just in case if he goes with a larger turbo. Wouldnt you get more gains with the larger turbo.