Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
2013-14 Shelby GT500
5.8 Bottom End
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Jam421" data-source="post: 16068144" data-attributes="member: 110985"><p>There are a bunch of guys who'd know way more about max power for the 5.8. I've been told around 850HP? But very much likely depends more on how high you spin it, fuel and tune. Guys have popped motors in the torque band peak range not even up top with less than 800HP. There are also guys here on the forum making WAY more than 850HP on stock internals. </p><p>Chassis dyno shops in our area with dynonometers typically estimate 15% drivetrain loss. So..on that estimate 680RWHP would = 800 crank. Mustang Dynos give lower rw #'s. Once I did a tune eval pull at 2 shops one month apart. Temps were about the same. Can't comment on air quality. What pulled 658rw on a Mustang Dyno pulled 716rw on a Dynonometer. Gears also have some effect on dyno numbers. You could also do 2 pulls...one week apart on the same dyno and #'s change. Tuners might better explain the parameters responsible for that.</p></blockquote><p></p>
[QUOTE="Jam421, post: 16068144, member: 110985"] There are a bunch of guys who'd know way more about max power for the 5.8. I've been told around 850HP? But very much likely depends more on how high you spin it, fuel and tune. Guys have popped motors in the torque band peak range not even up top with less than 800HP. There are also guys here on the forum making WAY more than 850HP on stock internals. Chassis dyno shops in our area with dynonometers typically estimate 15% drivetrain loss. So..on that estimate 680RWHP would = 800 crank. Mustang Dynos give lower rw #'s. Once I did a tune eval pull at 2 shops one month apart. Temps were about the same. Can't comment on air quality. What pulled 658rw on a Mustang Dyno pulled 716rw on a Dynonometer. Gears also have some effect on dyno numbers. You could also do 2 pulls...one week apart on the same dyno and #'s change. Tuners might better explain the parameters responsible for that. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
2013-14 Shelby GT500
5.8 Bottom End
Top