400hp 4.6L DOHC Aluminum block for Bullitt!
From FRPP on the GT heads, "These heads are the final revision of the 2000 Cobra R heads"
The Boss 290 head, "re-engineered Mustang Cobra R alloy heads"
If not the same, probably all but the same. At least not enough difference in HP that could allow for any radical increase.
The Boss 290 head, "re-engineered Mustang Cobra R alloy heads"
If not the same, probably all but the same. At least not enough difference in HP that could allow for any radical increase.
Unfortunatley for you, what you've stated is not correct. I've actually corrected this misinfo countless times in the past. Boss 260/290 motors use generic 03/04 heads with specific cams and 03/04 specific intakes. These motors have been out for years.
Improved Cobra R design means nothing more than an improved intake/exhaust port with higher quality short turn casting. Hence the differences between 99-01 Cobra heads and 03/04 generics are larger more rectangular exhaust port, better short turns on both sides, and a slightly revised intake port (though port mouth shape/location are the same as the earlier tumble port heads (99-01 and FR500). All Modular heads, even 2vs are cast of Al.
Sorry to burst your bubble, it's a verified fact, they are not R/GT/GT500 heads.
For further evidence you can actually see, look at the pics of the Boss vs. R intakes I posted. R/GT/GT500 heads have a completely different shaped taller port that protrudes an inch further into the intake plenum valley meaning there's no chance of using one on the other. R/GT/GT500 heads also have 32mm exhaust valves vs. 30mm in all other heads, and a monstrous exhaust port that flows as well as a stock 99-01 Cobra intake port, off the shelf.
Sorry to burst your bubble, it's a verified fact, they are not R/GT/GT500 heads.
For further evidence you can actually see, look at the pics of the Boss vs. R intakes I posted. R/GT/GT500 heads have a completely different shaped taller port that protrudes an inch further into the intake plenum valley meaning there's no chance of using one on the other. R/GT/GT500 heads also have 32mm exhaust valves vs. 30mm in all other heads, and a monstrous exhaust port that flows as well as a stock 99-01 Cobra intake port, off the shelf.
)What I take from that tread seems to back up my "no 400HP 4.6L Mustang from Ford".
There may be a 400 HP / 4.6 engine, but it will be a race engine (not streetl).
I'm still scratching my head as to why Ford won't dust off the Terminator engine and put it in a S-197 SE to give us a nice range of 300 - 400 - 500 HP models.
Probably because it would result in a "cheaper", easier to mod, better-performing alternative to the GT500. Given the right parts, the Terminator 4.6 can equal the GT500's 5.4 although the 5.4's true limits have yet to be reached. The S/C 4.6 currently has more aftermarket support as well. Less weight on the nose and a slightly lower center of gravity also help the performance cause. Lastly, the lack of "Shelby" badging would result in lower pricing overall.
If they want more HP for a Mustang SE it's much easier to get more HP using an existing design that adds CIs. (5.4L)
People also have to realize the the hoops a primary Auto manufacturer has to jump through to get an engine certified.
Basically they start by having to pass the emissions test. Then the car is driven for 50,000 miles with no service other than topping off the fluids, and tested again. Now they can service the engine (fluids) and it's driven another 50,000 miles and tested again. Fail in anyway and you get to start all over.
Once they pass that test and the engine is certified for production then cars are pulled from the line at times and tested. Also cars that have been in actual service are tested at times. This where the recalls and ECU service update reflashes come from.
Secondary manufactures like Saleen, Roush or Shelby only have to have the car pass the first emissions test (like CARB certification for aftermarket parts).
Oh and I should add that the EPA emissions certification test is nothing at all like the simple tailpipe test many states have.
Basically they start by having to pass the emissions test. Then the car is driven for 50,000 miles with no service other than topping off the fluids, and tested again. Now they can service the engine (fluids) and it's driven another 50,000 miles and tested again. Fail in anyway and you get to start all over.
Once they pass that test and the engine is certified for production then cars are pulled from the line at times and tested. Also cars that have been in actual service are tested at times. This where the recalls and ECU service update reflashes come from.
Secondary manufactures like Saleen, Roush or Shelby only have to have the car pass the first emissions test (like CARB certification for aftermarket parts).
Oh and I should add that the EPA emissions certification test is nothing at all like the simple tailpipe test many states have.
People also have to realize the the hoops a primary Auto manufacturer has to jump through to get an engine certified.
Basically they start by having to pass the emissions test. Then the car is driven for 50,000 miles with no service other than topping off the fluids, and tested again. Now they can service the engine (fluids) and it's driven another 50,000 miles and tested again. Fail in anyway and you get to start all over.
Once they pass that test and the engine is certified for production then cars are pulled from the line at times and tested. Also cars that have been in actual service are tested at times. This where the recalls and ECU service update reflashes come from.
Secondary manufactures like Saleen, Roush or Shelby only have to have the car pass the first emissions test (like CARB certification for aftermarket parts).
Oh and I should add that the EPA emissions certification test is nothing at all like the simple tailpipe test many states have.
Basically they start by having to pass the emissions test. Then the car is driven for 50,000 miles with no service other than topping off the fluids, and tested again. Now they can service the engine (fluids) and it's driven another 50,000 miles and tested again. Fail in anyway and you get to start all over.
Once they pass that test and the engine is certified for production then cars are pulled from the line at times and tested. Also cars that have been in actual service are tested at times. This where the recalls and ECU service update reflashes come from.
Secondary manufactures like Saleen, Roush or Shelby only have to have the car pass the first emissions test (like CARB certification for aftermarket parts).
Oh and I should add that the EPA emissions certification test is nothing at all like the simple tailpipe test many states have.
Actually the Shelby Gt went thru the full EPA tests and Carb, we are the manufacturer of record. we had to do this to go thru all the dealers
Amy
AKA 1 BULLITT------------ Legacy TMS Member





Joined: January 29, 2004
Posts: 7,738
Likes: 361
From: U S A
You guys better hope what I am telling you is wrong, but a little birdie from Ford told me that there will be minimal H.P. gain in this car.
We are talking 10hp! I doubt we see anything over a 25hp gain on this car. Sorry!
Lets pray that we get a 350-400hp Mach1 or Boss in the future.
We are talking 10hp! I doubt we see anything over a 25hp gain on this car. Sorry!
Lets pray that we get a 350-400hp Mach1 or Boss in the future.
You guys better hope what I am telling you is wrong, but a little birdie from Ford told me that there will be minimal H.P. gain in this car.
We are talking 10hp! I doubt we see anything over a 25hp gain on this car. Sorry!
Lets pray that we get a 350-400hp Mach1 or Boss in the future.
We are talking 10hp! I doubt we see anything over a 25hp gain on this car. Sorry!
Lets pray that we get a 350-400hp Mach1 or Boss in the future.
Some people will do anything to keep the Bullitt section alive.
Can't blame them, really. It could have been SUCH a great car.
Coulda...woulda...shoulda...
Oh well, at least we have the GT500KR now. We'll all be able to run out and get one of those instead.
Of course you'll be able to buy a Bullit for what the ADM the dealers will want on the KR.
I finally was able to buy a Marauder a few months ago, for half of the sticker price when it was new. Fortunately, it had been well cared for and was low miles. I guess I may have to hope for the same if I want a Bullitt or a KR.
Shame, Ford, shame
why thank you for the advice, my feeling is, I nolonger respond as this person is sad and not worthy of even a direct response.... How sad it must be to own soimething you should enjoy and can't. Things at Shelby are terrific, The overall consumers seem happy and we will strive to continue to get the consumer what they want. Petty people are just....well, sad, and I feel sorry for them.
You know, I always say that people don't have to be nice, but they should be able to ask and receive questions in a respectful and adult manner.
Amy



