I need some feedback on what cam set should I go for. I have heard that the 272's have a slightly rougher idle than stock while the 262's feels just like stock, is this true? Do I need to perform any valve train mods with the cams, ie., stiffer valve springs etc.

I also heard of using a combo of both cams intake to exhaust (I think Vishnu was experimenting with this option).

Right now the only engine mods that I have is a B&B turoback exhaust including a cat delet.

Winston

 

You need to do a computer next, I would say the xede because he has a map for the cams.

 

Your'e not the only one that has told me this. I am planing to perform the cam install in conjunction with fuel, turbo control and such.

Thanks for the advice.

Winston

 

THe 264 option is a little different than stock, not as smooth as stock but has more breathing for sure. the 272 is not as smooth, very noticeable, the exaust sounds just mean and the turbo spools up faster because of much better breathing. I did the 272 for intake and exaust and the car pulls like crazy now!! I love it, best upgrade besides boost controler. the only cam I have not heard about is works has a cam that has different duration and lift than the HKS ones.

 

Do the computer 1st and use it for a week or so to make sure there are not any problems, then do the cams. I really like my xede.

 

ihave the 264 along with safc. bc .br. int cooler all the pipeing 680cc inj fuel pump and br ex.with cat del.tha cams made a big dif.

 

264 -- Stock Turbo
272 -- Larger Turbo
272's don't make any more power than 264's with stock turbo. Dyno proven many times. Idle depends on size of injectors and fuel management, both are lumpy, the 272's moreso.

 

Thanks ya all for the advice!

Winston

 

Actually the 264s spool faster, 272s are more duration=more topend. You will gain like 2-3whp with the 272 over 264, but the 264 have about 10ftlb more in teh nidrange, and a 200rpm faster spoolup.

JUN and Tomei make awesome cams as well.

 

so what is the benefit of using the vishnu combo of 264 intake and 272 exhaust???? out of curiosity...

-non

 

I posted this a long time ago on Vishnu's board @ this site. Worth another look. AMS did these on a DSM engine - results should be similar.

http://www.automotosports.com/cam_test.asp

 

954DRGGSR - You live on this forum don't you my brotha! I see you everywhere.
:-)

 

Do you mean that the 264 spools up faster then the stock cams? or just compaired to the 272's? I have heard alot about 272 cams being set differently with cam gears, like -3/-3 or 0/0...

Has anyone experimented with the 264's retarding or advancing?

 

The automotosport cam comparision shows that HKS 272 cams (blue line) spools much faster then the JUN stage 3 which has higher lift (quite significantly so as well). Why is that? they both have the same duration, and most people say that the higher the lift the better spoolup and torque... So whats the truth about lift then?

 

I'm not positive on this, but I thing the JUN Stage 3 they are reffering to are the JUN 272s. Those cams have big lift and big overlap, and would be poor in the bottom end. For anything street driven JUN 264s are a much better fit. They are supposed to be a bit more agressive than the HKS 272s; the JUN 264s have more lift with a moderate (comparable?) overlap.

One thing to remember is that a 264 from one vendor can be completely different from a 264 from another vendor. That measurment can be taken at different lifts. For best results, I'd look to the kind of cars the cams you are thinking about are being used in. If they only show up in drag cars, you can probably expect a narrow power band and poor driveability.