is putting a 650 rwhp engine in a 2006 GT just pointless?
Thread Starter
2nd Gear Member
Joined: Aug 2011
Posts: 310
From: NY
is putting a 650 rwhp engine in a 2006 GT just pointless?
Hi All,
I am considering building a new 4.6 stroked to 5.0 long block this year. My plan is to run 8.7:1 compression, 15 psi, comp cams, mild head work... I understand 625 to 650 rwhp is easily attained with this setup.
This car has a stock 5sp and stock rear.
I am thinking that after building an engine, upgraded tranny, fuel system, pulleys, etc, it may be worth just leaving the car the way it is and putting this money away for a 2013 Shelby.
I have a ton of money into this car. But another 10k is a hard sell to myself.
Will the stock tranny and rear hold up?
Will this thing be driveable at 15psi?
Curious to see what everyone thinks.
I am considering building a new 4.6 stroked to 5.0 long block this year. My plan is to run 8.7:1 compression, 15 psi, comp cams, mild head work... I understand 625 to 650 rwhp is easily attained with this setup.
This car has a stock 5sp and stock rear.
I am thinking that after building an engine, upgraded tranny, fuel system, pulleys, etc, it may be worth just leaving the car the way it is and putting this money away for a 2013 Shelby.
I have a ton of money into this car. But another 10k is a hard sell to myself.
Will the stock tranny and rear hold up?
Will this thing be driveable at 15psi?
Curious to see what everyone thinks.
4th Gear Member
Joined: Sep 2011
Posts: 1,225
the stock suspension has trouble holding 300hp let alone 650, would really need to upgrade the arms and panhard etc etc.
the axle itself would be fine.
clutch would most likely commit suicide <if stock>, tranny probably would go soon after a new clutch.
dont know about drivability, Im still N/A and probably will stay like that for a while.
also "is putting a 650 rwhp engine in a 2006 GT just pointless?"
Putting 650 hp in a mustang is never pointless
the axle itself would be fine.
clutch would most likely commit suicide <if stock>, tranny probably would go soon after a new clutch.
dont know about drivability, Im still N/A and probably will stay like that for a while.
also "is putting a 650 rwhp engine in a 2006 GT just pointless?"
Putting 650 hp in a mustang is never pointless
3rd Gear Member
Joined: Mar 2011
Posts: 718
From: IL
I'm thinking of doing the exact same. Sure you could buy a Shelby...but I want to build it myself, make it my own. You know?
My thoughts as of now:
B302, whipple pushing about 16 psi or so with a steeda dedicated drive belt, cams, and minor headwork down the road. Also a Ram Dual Disc clutch, driveshaft, and hopefully a T56 Magnum XL swap...but that's even more money. I'm looking at $15k EASILY when all is said and done. But this will be long after the car is paid off, and that ALMOST makes it all worth it. Better than going out and buying a new $50k car right? And then it's your own? Sure it's a better starting platform but yeah. That's my thinking. And of course it will all be done in steps.
And that doesn't even include suspension really, but I have a general idea of the direction I want to go.
Good idea of my personal goal:
http://www.youtube.com/watch?v=ozY2K...ure=plpp_video
My thoughts as of now:
B302, whipple pushing about 16 psi or so with a steeda dedicated drive belt, cams, and minor headwork down the road. Also a Ram Dual Disc clutch, driveshaft, and hopefully a T56 Magnum XL swap...but that's even more money. I'm looking at $15k EASILY when all is said and done. But this will be long after the car is paid off, and that ALMOST makes it all worth it. Better than going out and buying a new $50k car right? And then it's your own? Sure it's a better starting platform but yeah. That's my thinking. And of course it will all be done in steps.
And that doesn't even include suspension really, but I have a general idea of the direction I want to go.
Good idea of my personal goal:
http://www.youtube.com/watch?v=ozY2K...ure=plpp_video
Last edited by HxCGuitars; Mar 29, 2012 at 10:53 AM.
Thread Starter
2nd Gear Member
Joined: Aug 2011
Posts: 310
From: NY
My suspension, brakes, driveshaft, k-member, body, interior, heat exchanger/fans, rims are all done... I own my own software.
I will need a McLeod RST clutch, better radiator, injectors, fuel pumps, 8-rib pulleys, electric water pump, upgraded tranny or splines and the long block. So that is about $12k.
If I buy a Shelby conv, I need about 12k for the difference of my car and then I don't have the suspension and rims at the least...
I will need a McLeod RST clutch, better radiator, injectors, fuel pumps, 8-rib pulleys, electric water pump, upgraded tranny or splines and the long block. So that is about $12k.
If I buy a Shelby conv, I need about 12k for the difference of my car and then I don't have the suspension and rims at the least...
Mish-ogynist
Joined: Nov 2007
Posts: 3,783
From: Helena, MT
have people gotten 650whp with the blower you have? I think my friend had trouble making it past 550whp with a saleen, he ended up buying a turbo to hit 650whp.
You can probably run for a bit with your spec 3 and stock transmission. Depending on your goals you might want to swap in an auto if you are doing a new transmission, that's what my friend did to get better ETs.
it might be easier to get a 2013 shelby and doing a pulley/tune to hit 650whp, but you'll have to find a dealership willing to sell it at MSRP, which is 55k for a base, 62k loaded. I haven't found a dealership willing to sell a new shelby without a big mark up, and this one should command some higher demand with the new engine and hp. plus the 2013 mustangs have a much better interior.
You can probably run for a bit with your spec 3 and stock transmission. Depending on your goals you might want to swap in an auto if you are doing a new transmission, that's what my friend did to get better ETs.
it might be easier to get a 2013 shelby and doing a pulley/tune to hit 650whp, but you'll have to find a dealership willing to sell it at MSRP, which is 55k for a base, 62k loaded. I haven't found a dealership willing to sell a new shelby without a big mark up, and this one should command some higher demand with the new engine and hp. plus the 2013 mustangs have a much better interior.
Last edited by Mishri; Mar 29, 2012 at 12:47 PM.
Thread Starter
2nd Gear Member
Joined: Aug 2011
Posts: 310
From: NY
I have not personally seen a 2.6lc running more than 12lbs of boost at 540 rwhp. Kenne bell will tell you 700 is easy. I am really not sure if it it attainable with the KB 2.6lc at 15psi with cams and head work to be honest.
4th Gear Member
Joined: Jul 2007
Posts: 1,454
From: Northern VA
I know it's fun to build cars but unless you have ALOT of money to build and maintain it, I would get the Shelby. I would never invest that kind of money into an 06 GT. I mean would you rather have a 7 year old car or a brand new Shelby with the most powerful production V8 in the world?
6th Gear Member
Joined: Sep 2006
Posts: 11,278
From: Gainesville, FL
A new shelby is going to cost a lot more in the long run. Not sure where you are getting the $12,000 difference between your car and a 2013 shelby, it's more like $40k difference. Add to that the depreciation on the shelby and it's a huge waste of money.
You spread that waste of money out over a 6 year loan and it doesn't seem so bad.
You spread that waste of money out over a 6 year loan and it doesn't seem so bad.
Thread Starter
2nd Gear Member
Joined: Aug 2011
Posts: 310
From: NY
A new shelby is going to cost a lot more in the long run. Not sure where you are getting the $12,000 difference between your car and a 2013 shelby, it's more like $40k difference. Add to that the depreciation on the shelby and it's a huge waste of money.
You spread that waste of money out over a 6 year loan and it doesn't seem so bad.
You spread that waste of money out over a 6 year loan and it doesn't seem so bad.