Sorry if this has been posted, im on my cell phone and it wont let me search.. Im going to be buying flow matched 60's, getting a smaller pulley and getting tuned.. Would a 2.7 be safe to use without me breaking something? As of right now, i only have the gmpp exhaust, rebel CAI and an ingalls td. Thanks guys..

 

Dont put the 60's and 2.7 on until you get cooling mods...another h/e and some meth

 

anything under 2.9 without cooling mods is not recommended. I on my car wouldnt run anthing below 3 without cooling mods.

 

just be blowin hot air

 

yup....it will blow, but the efficiency will actually cause u to lose power..and possibly cause detonation...

 

there are members that have run the 2.7 for a while with no problems, they didnt have cooling mods. just get an interceptor and monitor your temps. you can make some pulls but i wouldnt do them back to back. so, your fine to run the 2.7 without cooling mods as some others might disagree because they are thinking on a WOT basis. so go for it. just be easy on the gas pedal

 

i have a 2.6 pully and have been driving without cooling mods for 2 months...but when i did the small he i can see waa Huge difference it has made i wouldnt go below a 2.8 if i had the chance to do it all over again. but hey i didnt put this pully on lol

 

ahha im doing the same exact thing. just go easy on it dude. no boy racer crap

 

a 2.9 isn't even recommended without cooling mods. You can do gm stage 2 without cooling mods, but you'll get more out of it with cooling mods.

I'm still on stock pulley and have seen AMAZING results with cooling mods and tuning. I'm still doing MORE cooling mods and I am finally adding a few bolt ons when I get back from deployment.

I can't believe all the people that just want to throw a pulley on and they think they'll be faster. LOL. Get cooling mods FIRST! then throw a pulley on and make some real power. NEWBS!

 

ralli's right lol

 

x2 ...cooling mods make the most of what you have...you can have all the psi in the world, but its about density, thats what gives you afr's and allows you to dump a ton of fuel in the cylinder and make power!

 

The simple answer is yes, you can use a 2.7 and 60's and be safe. Now, this is considering that you're not constantly racing the car and always on the throttle. It needs time to cool down and heavy racing won't allow the stock heat exchanger to work efficiently.

Are cooling mods absolutely necessary? no

Would it be wiser to add an additional heat exchanger? yes

I'd stick with an additional heat exchanger over meth though.

 

I am running a 2.6 pulley without cooling mods and I have had no problems, just be easy on it UNTIL you do.. My meth is on the way as well as a dual pass, but still. you will have no problems with it if you don't drive like a moron.. Also.. Expect to get pulled by a stage 2 balt or redline with your mods up top.. it happens.. You will heatsoak like crazy :P

Up to you.

-Matt.

 

this statement should be a STICKY! 10-4 Ralliartist....

 

Can you say Heatsoak. 2.7 with no cooling and you're IAT2's will be over 200 after the first run.

 

logs or ban

 

yes youll be ok but you can only do one pull then you got to wait like 10 minutes...and one pull meaning one gear...you cant hit 2nd then 3rd then 4th...that would be bad...also alot of people dont know this but you can not floor it under 3500rpm with a 2.7 in pulley...u must down shift....so that means you have a dead spot under 40 if your already moving...cus u cant down shift to 1st at 25 30 mph....just something to keep in mind....also u must get headers and dp if your going to run 2.7...u must get that first...

 

I wish I had them. lol But it was erics car and Stevo was the tuner so he should have them.

 

this is sound advice



anyway
thats in Arizona invisible...
I made about 6 runs at MIR(Maryland) and the highest IAT2 temp I saw going across the line was 180. I'll see if I can pull the log off my laptop to verify.

 

El Paso, We drug him down here. But it wasn't to hot, well Im sure you're hot and my hot are way different. Hell down here a 95 degree day is pretty cool for the summer time. lol

 

way different heat....add in humidity and it gets worse.

 

Yea true, I forget that not everyone lives in an oven. lol

 

whats the gains from a 2.85 to a 2.7? is it even worth it?

 

i think every 0.1 drop in pulley size is equevalent to about 10whp

 

this is just some bullshit that someone made up when the car came out, it's not dyno proven.

with no cooling mods, you'll lose power. With cooling mods, you'll need to dyno to find out. Every car is different and depending on what your other mods are your gains will be different.