comp cams 262s? or 270s?
03-24-2011, 12:46 AM
#1
Thread Starter
Join Date: Nov 2010
Location: tx
Posts: 31
comp cams 262s? or 270s?
so ive been looking into getting a set of cams for my 04 gt with 71k miles to give it some "umph" and i'm looking to just replace the cams. i do not want to change the valve springs because installation then goes over 1k (just installation, no parts included). i do have the basic mechanic knowledge (im all about DIY), but i just dont know much about the internals of my car, so i rather get a professional to do it. im considering the comp cams 262's because from what ive researched, they are an overall good cam that does not need valve springs changed. i wanted the 270s for better HP gains, but i think you have to upgrade the valvesprings on those?? do you guys (or gals) recommend any other cams for my set up? this car is used primarily in the city so i would not like to loose much low end power. any advice would help. thanks!!
my current mods:
FRPP 3.73 gears
BBK shorty headers
Pypes O/R X pype
SLP LM 1 catback
JLT CAI
BBK 78MM Throttle intake
SCT x3 w/ bama custom tune
my current mods:
FRPP 3.73 gears
BBK shorty headers
Pypes O/R X pype
SLP LM 1 catback
JLT CAI
BBK 78MM Throttle intake
SCT x3 w/ bama custom tune
03-24-2011, 01:07 AM
#2
5th Gear Member
Join Date: Nov 2007
Location: Maryland
Posts: 4,955
link?
im assuming 262s are stg 1 cams and 270s are stage 2 cams, and most likely you will need aftermarket valve springs.
Most people will reccomend CMS (cushman motorsports) cams ... which i am not adverse to as Jim cushman is a member on the site, also they seem to be good cams.
Hi-tech stage 1s are also a common cam
More than likely the stage 2 cams make power higher, which the stock valvesprings can not sustain resulting in floating valves.
all in all a stage 1 cam is a stage 1 cam and power is not going to vary much from company to company.
im assuming 262s are stg 1 cams and 270s are stage 2 cams, and most likely you will need aftermarket valve springs.
Most people will reccomend CMS (cushman motorsports) cams ... which i am not adverse to as Jim cushman is a member on the site, also they seem to be good cams.
Hi-tech stage 1s are also a common cam
More than likely the stage 2 cams make power higher, which the stock valvesprings can not sustain resulting in floating valves.
all in all a stage 1 cam is a stage 1 cam and power is not going to vary much from company to company.
03-24-2011, 01:20 AM
#3
Thread Starter
Join Date: Nov 2010
Location: tx
Posts: 31
these are the 262s and yes, they are a stage one http://www.americanmuscle.com/mustan...s-xe262ah.html and the stage 2 are these http://www.americanmuscle.com/mustan...s-xe270ah.html
03-24-2011, 10:43 AM
#4
6th Gear Member
Join Date: Jan 2007
Location: MI
Posts: 5,884
The 262's won't need valve springs (the 270's will) and would be a decent choice if you want a grind that will be both n/a and blower friendly. Now if you plan on staying n/a (or with nitrous) i'd recommend either MHS stage 2's or CMS stage 1's. Both will have acceptable ptv clearance if installed at the advertised specs, won't require upgraded valve springs, and both will be a little better than the 262's in a n/a application.
03-24-2011, 04:01 PM
#5
5th Gear Member
Join Date: Sep 2006
Location: CA
Posts: 4,039
The 262's won't need valve springs (the 270's will) and would be a decent choice if you want a grind that will be both n/a and blower friendly. Now if you plan on staying n/a (or with nitrous) i'd recommend either MHS stage 2's or CMS stage 1's. Both will have acceptable ptv clearance if installed at the advertised specs, won't require upgraded valve springs, and both will be a little better than the 262's in a n/a application.
03-24-2011, 04:27 PM
#7
6th Gear Member
Join Date: Feb 2006
Location: Virginia
Posts: 11,786
Sorry it's off topic but, I've been away almost a year and we're still talking about Comp 262's? I thought by now those miracle TFS heads would have made some sort of Justice League Edition cams that would have saved the little 2v and started making 800rw na?
03-25-2011, 05:16 AM
#10
Join Date: Jun 2009
Location: fl
Posts: 17
I went with a used set of 274's which came with beehive springs as part of the deal. Overall I am very happy with them, the car makes a lot of power with a wicked idle. Be careful of the ptv issues with comp cams. Mine had major ptv with the stock pistons, which lead to notched pistons, which lead to removal of pistons, which lead to upgrading to flat top (99 cobra, great mod by the way) pistons and the story goes on.
If I could go back and do it again I would use MHS (modularheadshop dot com) custom cams, the comps are very good but his are better. Also, he has a hole line of cams that do not require springs, cams that are designed for maximum performance but use stock cams. After I finish the suspension on my car I will probably upgrade to a set of his and sell my 274's.
Good luck with your upgrade and most of all have fun!!
P.S. there is a tool out there that allows you to change cams in these engines without removing the timing chains. This means you only have to remove the valve cover to change the cam!! That would make the job very easy and allow you to do it yourself saving lots of money to use on other mods!!
If I could go back and do it again I would use MHS (modularheadshop dot com) custom cams, the comps are very good but his are better. Also, he has a hole line of cams that do not require springs, cams that are designed for maximum performance but use stock cams. After I finish the suspension on my car I will probably upgrade to a set of his and sell my 274's.
Good luck with your upgrade and most of all have fun!!
P.S. there is a tool out there that allows you to change cams in these engines without removing the timing chains. This means you only have to remove the valve cover to change the cam!! That would make the job very easy and allow you to do it yourself saving lots of money to use on other mods!!