Looking for more HP

Status
Not open for further replies.
Originally Posted By: Donald
And your doing this why? I assume the stock vehicle could exceed the speed limit.


With respect to horsepower, some is good, more is better, and too much is just enough.
 
The minute you do more than easy bolt ons (which don't add much except noise) the vehicles value in the aftermarket plummets.

A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.




The right way to do this is to have a second engine built and swap them out. This way you can make real reliable power from the short block up.



UD
 
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.


Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.
 
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.


Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.


Thats way too much for the street.
 
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.


Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.


Sure you "can" make 700HP for how long?

Never had a bolt on kits make over plus +100 that lasted longer than a year in a car or 20 hours in a boat.

Ive seen so many of these come through the shop its astounding.

You can get "about" 100 more reliable HP from a stock setup and then you need to go into the short block.

If making a reliable 700Hp was a matter of 2500 of parts on then they would be that cheap to get with a warranty.



UD
 
Last edited:
Op gonna run race fuel everywhere?

If you want to run race fuel most short blocks can hold 6-700 in a car for a while...




UD
 
Originally Posted By: Mr Nice
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.


Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.


Thats way too much for the street.


That's stock HellCat power, LOL
 
Originally Posted By: UncleDave
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.

Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.

Sure you "can" make 700HP for how long?

Never had a bolt on kits make over plus +100 that lasted longer than a year in a car or 20 hours in a boat.


Roush Mustangs (Google them) are a stock factory GT with a Ford approved supercharger kit installed, and those cars are sold new through the Ford dealers with a factory wartanty. So yeah, Ford has detetmined they can take that much power, and they do.

Many guys on the Mustang boards have SC kits on their 5.0L Coyote (added after they bought the car), and they aren't blowing them up. It's a tough engine.

Obviously, not all engines will take a ton more added HP without some bottom end mods, but some engines can take it without beefing them up.
 
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.

Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.

Sure you "can" make 700HP for how long?

Never had a bolt on kits make over plus +100 that lasted longer than a year in a car or 20 hours in a boat.


Roush Mustangs (Google them) are a stock factory GT with a Ford approved supercharger kit installed, and those cars are sold new through the Ford dealers with a factory wartanty. So yeah, Ford has detetmined they can take that much power, and they do.

Many guys on the Mustang boards have SC kits on their 5.0L Coyote (added after they bought the car), and they aren't blowing them up. It's a tough engine.

Obviously, not all engines will take a ton more added HP without some bottom end mods, but some engines can take it without beefing them up.


Know roush well-they post sale tested my 93 lightning pickup.

I didn't know they made a bolt on from 460 to 700 thats a ton for a stock high comp engine already.
Pretty sure thats all forged from the factory so its better than most but thats a ton.
Do they make you run Race gas for that?


just checked it out -670 & 545 ft/lb seems really light for that many ponies pretty cool though.

I wonder what static and final compression are in that rig.

Seems like they back it for 30K.


UD
 
Last edited:
Just 93 octane pump gas. Rouch website says 3 yr/36k mile warranty. http://www.roushperformance.com/vehicles/mustang-2017-stage3.html

Whipple also makes a nice SC kit for the 5.0L Coyote. But with the Ford Racing Performance SC kit you get a Ford warranty. Whipple might have a limited warranty too.

You should see the HP & torque curves, basically a straight HP line all the way to redline. T curve is nearly flat across the rev range. I might dig one up off the Mustang board and link it here, it's quite impressive.
 
Looks like it 11:1 stock so at 4 lb that like 14:1 well into detonation range on pump gas.

pretty trick setup guessing they are spinning it up real high before feeding boost in to keep detonation at bay also prob why torque is pretty tame for a blown rig.

Whats that setup cost?

UD
 
The Roush stage 3 link I posted above showed starting at $19,500 ... but that Roush Mustang is much more than just the engine, has lots of chassis mods, etc too. Whipple stage 2 is about $8400, link below.

Here's a Roush stage 1. Dyno chart is RWHP of course. Look how insanely linear the HP curve is. Stock GT is doing about 390 RWHP for comparison.
https://www.mustang6g.com/forums/showpost.php?p=1271124&postcount=51

Magnacharger kit, car has auto tranny which will give a little less dyno RWHP.
https://www.mustang6g.com/forums/showpost.php?p=1573630&postcount=92

Stage 2 Whipple ... nuts.
https://www.mustang6g.com/forums/showpost.php?p=1691569&postcount=102

https://whipplesuperchargers.com/index.php?dispatch=categories.view&category_id=313
 
Originally Posted By: Mr Nice
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.


Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.


Thats way too much for the street.


Too much? Sacrilege. Every IC engine has a power curve. My FI SRT is approx. 930 rwhp at peak. It can be driven at less than peak HP. You DO have to be aware of when and where full power can be applied.
 
Originally Posted By: OVERKILL
Originally Posted By: Mr Nice
Originally Posted By: ZeeOSix
Originally Posted By: UncleDave
A turbo or blower on a stock short block is a joke unless you arent planning on making any real power as your compression ratio is too high already for it.


Lots of engines with high compression get big HP gains by going FI. Just look at something like a Coyote in a Mustang. Stock is 435 HP and bolting on a supercharger kit gives 700+ HP.


Thats way too much for the street.


That's stock HellCat power, LOL


And the new ZR-1 will have more than that....
 
Originally Posted By: ZeeOSix
The Roush stage 3 link I posted above showed starting at $19,500 ... but that Roush Mustang is much more than just the engine, has lots of chassis mods, etc too. Whipple stage 2 is about $8400, link below.

Here's a Roush stage 1. Dyno chart is RWHP of course. Look how insanely linear the HP curve is. Stock GT is doing about 390 RWHP for comparison.
https://www.mustang6g.com/forums/showpost.php?p=1271124&postcount=51

Magnacharger kit, car has auto tranny which will give a little less dyno RWHP.
https://www.mustang6g.com/forums/showpost.php?p=1573630&postcount=92

Stage 2 Whipple ... nuts.
https://www.mustang6g.com/forums/showpost.php?p=1691569&postcount=102

https://whipplesuperchargers.com/index.php?dispatch=categories.view&category_id=313




The coyote seems to be a killer platform for mods.

Unsurprisingly Roush really did their homework on the injection and timing system to keep detonation at bay.

I guess time will tell how long it holds up, but thats pretty amazing.

Id have figured that with 200 + HP on the stock mill the thing would deep fry the rings with detonation and be blowing oil out the dipstick tube in no time.

Im used to more torque than Hp with blower setups so seeing close to 700HP and 545 looks weird to me, but I primarily deal with them in marine engines - homebuilts come in all the time blowing out out the breathers and dipstick tubes guys asking what to do..

My own na/injected engines make V10 700/ 650 and the BBC makes 725 and 819
 
Last edited:
Originally Posted By: KneeGrinder
Not a bad way to go, Jackson has been around along time. But it takes HP to turn the Charger, Turbo power is free= mo better, not always boosting.

As Zo6 suggested, maybe professional tuning would be enough to suffice your needs since you have variable timing and a twin cam. Twin cams are a big benefit. By down pipe, do you mean header? Cat delete?


actually, turbo power is not free - it takes power to spin it and compress the air. That shows up as back pressure in the exh. Both have a cost.
 
Status
Not open for further replies.
Back
Top