2.7 more performs? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 17 (permalink) Old 07-16-2011, 11:39 PM Thread Starter
Intrepid Fan
 
yman4949's Avatar
 
Join Date: Mar 2011
Location: Illinois
Posts: 110
Feedback: 0 / 0%
 
Question 2.7 more performs?

My trep has a 2.7 and I was wondering if a Manifold Tuning Valve is an option and if its simple to install. Would it even give my little 2.7 any performance increase?
yman4949 is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 07-17-2011, 12:32 AM
Intrepid Pro
 
dodgebob68's Avatar
 
Join Date: Feb 2010
Location: Panama City, FL
Posts: 1,235
Feedback: 0 / 0%
                     
IMHO The simple answer to 2.7 mods is...DON'T DO IT. For the amount of money you would need to spend to get any appreciable gains, you might as well build and swap in a 3.2/3.5. A 2.7 build can be done, but at what cost? You can spend 10 grand to get a 300 hp 2.7 or 3 grand to get a 325 hp 3.5 or 4.0. And you'll still have the inherent problems with the 2.7 that plague that motor. Just this one man's opinion. Best bet, run a nitrous sytem on your 2.7, maybe some tranny cooling upgrades to preserve it.

"It's finally built the way Dodge should have built it."

dodgebob68 is offline  
post #3 of 17 (permalink) Old 07-17-2011, 12:35 AM
I hit shit with sticks!


 
Daytrepper's Avatar
 
Join Date: Jan 2005
Location: Zebulon, NC
Posts: 37,104
Feedback: 21 / 100%
                     
Garage
Quote:
Originally Posted by dodgebob68 View Post
IMHO The simple answer to 2.7 mods is...DON'T DO IT. For the amount of money you would need to spend to get any appreciable gains, you might as well build and swap in a 3.2/3.5. A 2.7 build can be done, but at what cost? You can spend 10 grand to get a 300 hp 2.7 or 3 grand to get a 325 hp 3.5 or 4.0. And you'll still have the inherent problems with the 2.7 that plague that motor. Just this one man's opinion. Best bet, run a nitrous sytem on your 2.7, maybe some tranny cooling upgrades to preserve it.
Completely agree....except for the 4.0 part, which has yet to be proven.
Daytrepper is offline  
Sponsored Links
Advertisement
 
post #4 of 17 (permalink) Old 07-17-2011, 12:47 AM
Intrepid Pro
 
dodgebob68's Avatar
 
Join Date: Feb 2010
Location: Panama City, FL
Posts: 1,235
Feedback: 0 / 0%
                     
Quote:
Originally Posted by Daytrepper View Post
Completely agree....except for the 4.0 part, which has yet to be proven.
I'll give you that for now, but soon, very soon, I believe I'm going to runnin a pachyderm powered pavement pounder.
dodgebob68 is offline  
post #5 of 17 (permalink) Old 07-17-2011, 12:49 AM
I hit shit with sticks!


 
Daytrepper's Avatar
 
Join Date: Jan 2005
Location: Zebulon, NC
Posts: 37,104
Feedback: 21 / 100%
                     
Garage
Quote:
Originally Posted by dodgebob68 View Post
I'll give you that for now, but soon, very soon, I believe I'm going to runnin a pachyderm powered pavement pounder.
Until someone posts some track and dyno numbers, on the original sheet from the track/dyno in .pdf...I am a total skeptic....for several reasons...lol. Just like the Philadelphia Parking Authority, wont believe anything but pure paperwork.
Daytrepper is offline  
post #6 of 17 (permalink) Old 07-17-2011, 12:51 AM
I hit shit with sticks!


 
Daytrepper's Avatar
 
Join Date: Jan 2005
Location: Zebulon, NC
Posts: 37,104
Feedback: 21 / 100%
                     
Garage
I'll need something like this:

Daytrepper is offline  
post #7 of 17 (permalink) Old 07-17-2011, 12:58 AM
Intrepid Pro
 
dodgebob68's Avatar
 
Join Date: Feb 2010
Location: Panama City, FL
Posts: 1,235
Feedback: 0 / 0%
                     
I understand that. But, here's my theory and its only a theory. If you apply tried and true engine building techniques that have produced performance gains in engines of all shapes, sizes, configurations, etc. and you are willing to search out the best parts, the most knowledgeable people in the business, and are willing to spend the money to get things done absolutely correct, the gains on the build should be somewaht in proportion to tried and true methods that have worked all along on other engines, especially those of similar size, shape and build. Like you said, its all speculation till one of us puts the tires on the dyno or track and makes it scream. Sorry for the hijack.

"It's finally built the way Dodge should have built it."

dodgebob68 is offline  
post #8 of 17 (permalink) Old 07-17-2011, 01:09 AM
I hit shit with sticks!


 
Daytrepper's Avatar
 
Join Date: Jan 2005
Location: Zebulon, NC
Posts: 37,104
Feedback: 21 / 100%
                     
Garage
Quote:
Originally Posted by dodgebob68 View Post
I understand that. But, here's my theory and its only a theory. If you apply tried and true engine building techniques that have produced performance gains in engines of all shapes, sizes, configurations, etc. and you are willing to search out the best parts, the most knowledgeable people in the business, and are willing to spend the money to get things done absolutely correct, the gains on the build should be somewaht in proportion to tried and true methods that have worked all along on other engines, especially those of similar size, shape and build. Like you said, its all speculation till one of us puts the tires on the dyno or track and makes it scream. Sorry for the hijack.
Agree with that. I believe in doing things that way. Only way I do business. However, no one has proven anything with any 4.0 in an LH, other than it will run. Many theories on it do not add up...such as the huge torque/hp gains. My point in the whole mess is the 4.0 is blown out of proportion way more than what the reality of it is.... I predict. Custom engine build is cool...hell yes...expected to be the mother of all LH engines? Hell no....until I see numbers. Money can buy anything. Want to see the backyard mechanic do this. LOL


1998 Dodge Intrepid
President; Danbo's Truck & Diesel, Inc
Director of Speeding; Chornay Boomers of Youngsville, GmbH
President, Rush Drumming Ventures, LTD;

Last edited by Daytrepper; 07-17-2011 at 01:12 AM.
Daytrepper is offline  
post #9 of 17 (permalink) Old 07-17-2011, 01:37 AM
Intrepid Pro
 
dodgebob68's Avatar
 
Join Date: Feb 2010
Location: Panama City, FL
Posts: 1,235
Feedback: 0 / 0%
                     
Quote:
Originally Posted by Daytrepper View Post
Agree with that. I believe in doing things that way. Only way I do business. However, no one has proven anything with any 4.0 in an LH, other than it will run. Many theories on it do not add up...such as the huge torque/hp gains. My point in the whole mess is the 4.0 is blown out of proportion way more than what the reality of it is.... I predict. Custom engine build is cool...hell yes...expected to be the mother of all LH engines? Hell no....until I see numbers. Money can buy anything. Want to see the backyard mechanic do this. LOL
You know as well as i do that increasing the stroke over the same bore creates more torque, thats an accepted hot rod process, not a theory. So there will be gains in torque, how much we don't know yet. There will some hp gains, I won't even venture a guess. With everything going into mine, I'm guessing up near 325, but even 275 would be acceptable. It's gonna be fun, and if it doesn't perform up to what I want i will figure out how to make it bigger, better, stronger, faster, that's the American way! And i may be the consummate backyard mechanic. I'm only farming out the stuff that needs a true professional to work on, or that I just don't have the time or tools or knowledge to do. Spent six weeks clearancing the block to fit this puppy together, thats a lotta sweatin the Florida heat!

"It's finally built the way Dodge should have built it."

dodgebob68 is offline  
post #10 of 17 (permalink) Old 07-17-2011, 12:19 PM
Intrepid Pro
 
Join Date: Feb 2002
Location: Virginia, U.S.
Posts: 16,188
Feedback: 4 / 83%
                     
Getting bak to the orignal question (Ahem!! LOL!) - there was a 2.7 version that came from the factory with MTV and SRV, was there not? If so, it would be a relatively simple matter of finding the plenum and PCM off of one?

We're not talking about nitrous levels of power increase with that - like it's going to push a good 2.7 over the edge.
peva is online now  
post #11 of 17 (permalink) Old 07-17-2011, 12:33 PM
Intrepid Pro
 
Squilliam's Avatar
 
Join Date: Nov 2008
Location: Greater Pittsburgh, PA
Posts: 15,047
Feedback: 2 / 100%
                     
Quote:
Originally Posted by peva View Post
Getting bak to the orignal question (Ahem!! LOL!) - there was a 2.7 version that came from the factory with MTV and SRV, was there not? If so, it would be a relatively simple matter of finding the plenum and PCM off of one?

We're not talking about nitrous levels of power increase with that - like it's going to push a good 2.7 over the edge.
I know Stratus' with the 2.7 came with the MTV, but idk if any came with SRV.
Squilliam is offline  
post #12 of 17 (permalink) Old 07-17-2011, 02:28 PM Thread Starter
Intrepid Fan
 
yman4949's Avatar
 
Join Date: Mar 2011
Location: Illinois
Posts: 110
Feedback: 0 / 0%
 
Was the 2.7 stratus have more performance increase with the MTV than without it? Would it be possible to scrap the MTV system from a dead 2.7 and set it up on my 2.7?
yman4949 is offline  
post #13 of 17 (permalink) Old 07-17-2011, 02:37 PM
Intrepid Pro
 
Squilliam's Avatar
 
Join Date: Nov 2008
Location: Greater Pittsburgh, PA
Posts: 15,047
Feedback: 2 / 100%
                     
Quote:
Originally Posted by yman4949 View Post
Was the 2.7 stratus have more performance increase with the MTV than without it? Would it be possible to scrap the MTV system from a dead 2.7 and set it up on my 2.7?
I havent done much to my motor. So far all I've done was dual exhaust, K&N FIPK, and the most noticeable mod, the 300m Special PCM. I was flirting with the idea of installing an MTV, but I plan on doing a 3.5 swap in the near future, so it doesnt seem neccessary to go through the headache of figuring out how to wire one into a 02+ 2.7 engine harness. I have heard that its really quite negligible. The power increase is from 2-4 hp IIRC.
Squilliam is offline  
post #14 of 17 (permalink) Old 07-17-2011, 02:43 PM Thread Starter
Intrepid Fan
 
yman4949's Avatar
 
Join Date: Mar 2011
Location: Illinois
Posts: 110
Feedback: 0 / 0%
 
Quote:
Originally Posted by wlb136 View Post
I havent done much to my motor. So far all I've done was dual exhaust, K&N FIPK, and the most noticeable mod, the 300m Special PCM..
This is probably a stupid question but what does the upgraded PCM do? Does it give a large power increase?

Last edited by yman4949; 07-17-2011 at 02:49 PM.
yman4949 is offline  
post #15 of 17 (permalink) Old 07-17-2011, 02:53 PM
Intrepid Pro
 
Squilliam's Avatar
 
Join Date: Nov 2008
Location: Greater Pittsburgh, PA
Posts: 15,047
Feedback: 2 / 100%
                     
Quote:
Originally Posted by yman4949 View Post
This is probably a stupid question but what does the upgrades PCM do? Does it give a large power increase?
Well if he valve body didnt crap out on me right before Carlisle this year, I wouldve had it dynoed. But yes, there is a considerable power increase IMO. a 3.5 HO doesnt run away from me anymore. It walks slowly.





But I will say that the amount of work involved is not for the inexperienced modder.

Squilliam is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome