400rwhp NA... are you kidding? I bet he sees that in bhp but probably closer to 325-330rwhp unless the compression is in ORBIT. 400 is hard to get out of a streetable 4V NA.

Don't want to pee on your parade but had to say that. I really hope you do prove me wrong but I'm confident that your builder is absurdly optimistic.

 

Well i guess we will have to see wont we?.... Blow-by racing has a 2005 GT with bolt-ons and cams and it put out about 360rwhp, this was abwhile ago to, now you add better cams and ported heads, then i dont see why i wont be around the 400rwhp range, not to mention its going to be a stroker.

look at it this way, I am increasing the displacement, adding a valve, adding ported heads and lopey cams, plus a better intake and posssibly a better transmission
if i was only going to be around 325-330 range then i would have stuck with the 2v

 

like I said.. I sincerely hope to Dog that I'm wrong. I'd love to see a 3v hit 400NA. That would give me a hardon in the biggest way. I'm just being the voice of pessimism. make sure you keep us updated. I'm terribly interested.

 

yep I will definately keep you and everyone updated, cant wait to see what happens, i will be taking pictures along with the dyno video. stay tuned!

 

r3dn3ck really knows his stuff so I'm with him on it making 400 crank. Look at the cobra R. a bored out, 4v, 5.4 liter, tuned engine makes 385 bhp. So to get a 5.0, 3v, tuned, cammed engine, 400 crank hp is realistic, but 400rwhp is a pretty far off. I see 350rwhp, but that extra 50 rwhp would be hard to come by

 

Just came in today!!! Man I love the 05/06 gt intake, looks so much better!!! and there is the valve covers, they look damn good too!!

 

The Cobra R isn't bored out. It also doesn't have variable cam timing.

 

You are critically wrong in a very very important point. Hate to say it publicly but we want accurate info here for the n00bs. The 5.4 is a tall deck 4.6 not a bored out 4.6. The pistons are IDENTICAL to those used in the rest of the modular motor series. The difference is in a .6"ish longer stroke (accomplished by a longer throw at the crank and a longer connecting rod pushing the slugs in a 1"ish taller block). If you put 3V heads on a 5.4 it would be a right powerful motor. 4V heads even moreso. But, as you increase the HP, you lose tq for any specific volumetric efficiency. You can bore and stroke a 5.4 all the way to 6.0L if you so desire but I don't like the cylinders being bored that far as it causes serious heat issues. Also the long rod on the 5.4 loads the side walls of the cylinder and wears them unevenly as it sits (eventually they'll be slightly out of round). A longer stroke only makes that situation worse, so I'm not keen on stroking the 5.4. Stroking the 4.6 is a good way to take advantage of the extra flow from the 3V head and should return respectable power but I'm still kinda iffy on the >350rwhp thing. I'll probably (hopefully) be proven wrong but that's better to me than pumping smoke up your kiester when I actually have doubts.

As for more HP, yep... you'll certainly have more HP with a 3v 4.6 or 5.4 than with a 2v. You'll never even come close to the 2v 5.4's ability to generate massive tq at low rpm's and carry that through the RPM range though. And for most guys the feeling of going fast is as good as actually going fast and that's what tq gets you... a huge shove in the back that doesn't let up. Don't forget that a stock 5.4 2v using 87 octane gas will be able to net you mid 12's. Tune it and add cams, ported heads, exhaust, intake, etc... and you'll watch your times drop even further. Add a small whiff of nitrous and high 11's are a reality all on a motor that you can buy for 1500 bucks running and ready to go. Add 500 bucks in parts and labor for the install and you're done.

The only real problem with 5.4's is a total and absolute lack of traction. Launch technique becomes critical to good times. You also benefit from the ability to get those times with lower gearing than you would on a 4.6 anything so you can regain some gas mileage.

Anyone ever notice how much those 3V valve covers look like Chebbie 409 covers? Probably not....

 

I'd paint those bad boys if you have the time for some extra detail work.....but cant wait why is it still on the floor and not in your car...lol

 

Here some numbers with blow-by racing's cams, In a 2005 gt with JLT CAI, mid pipe and catback and tune
351/336

http://www.blowbyracing.com/bbr-3v-cams.html

Here are BBR's stage 2 camshafts with ported heads and bolt ons
average of 375-385rwhp
http://www.blowbyracing.com/bbr-3vbilletstage2.html
here are some dyno runs-
http://www.blowbyracing.com/vid-380.html 380rwhp
and
http://www.blowbyracing.com/vid-406.html 406rwhp

Not bad numbers, I dont think i should have problems hittng the numbers in the second one, considering that i will have heads that flow better, 301 intake 218 exhaust compared to the BBR heads that are 282, 189. Plus the stroker rotating assembly thats good for about 20rwhp.

 

damn that makes me want an 05....400 hp w/ heads cams and boltons

 

i c 11s as likely on motor w/ traction and the driver mod and possibly some weight reduction

 

Well, My heads, cams and rotating assembly was shipped out this week (2 weeks earlier than expected) And the 5 speed conversion is a GO also. Bought a barely used race prepped TR 3650 for $400, baught driveshaft for $60, steel flywheel for $120 next is the clutch and shifter from MT. The swap should yeild me 15-20 HP over the old auto!

So the car should be ready in about 2 weeks (Hopefully:banana: )

I should have some pictures of the heads next week, I hear they are beautiful!!!

been researching and the 3v 5.4 swap into a 96GT has been done but not with ported heads and cams, The 96 made 324rwhp on stock heads and cams and bolt ons... not bad....Im not going to sit here and tell you guys that I will definately have 400, we will just have to find out, but it IS possible.

cant wait

This would be great as a sticky

 

Or, an Ls1 with heads cam, and make 450 Sorry couldnt resist.

 

I don't see a problem with a 5.4 and ported 3v heads with nice cams making 400 at the tires. There's enough cubes to keep the rpms reasonable so it should have a HUGE powerband.

FWIW, Saleen S330 just came back from the dyno with his 2v 5.4 with ported heads and stock cams... 289hp/366tq at the tires. That's on stock compression. I'm doing 10.5:1CR and xe262ah cams on a built bottom end with ported heads. Hoping for 325/425 at the tires but looking like it'll be more than I expected. Saleen still made 300tq at 5000rpm, which is pretty impressive in its own right.

Good luck on the 3v... I'm pullin for you.

 

Thanks man.... i like those numbers of s330, gotta love that tourque!!!

 

Well, wnet to the shop yesterday, Took some pics of the car and my rotating assembly, everything is ready to come out the short block should be done by next week, just waiting on the piston rings. Also waiting on the heads, livernois had to tweek their cnc program a bit because of a problem, but those should be here next week or early ther week after and a couple days after that my baby should be done, so we are looking at about 2 1/2 weeks. Here is some pics of the pistons, connecting rods, my trans and other stuff. and a beautiful Yellow 98 cobra with a vortech sc, 400rwhp on 8psi.


Manley rods- Cuz i am manly

Race prepped 3650 by tremec

The car

 

more

 

Heads are done and will be shipped out Monday!!!!!! then the beast starts coming together!...about fricken time!!!

 

If you're going to be changing out the entire engine you should change out alot of other things also like injectors/sensors...etc.

 

Thats awesome man, I wish I had the funds right now to do something like that. I want to see what kind of power it puts down.

 

Don't GT's have solid axle's? I'm lost :wallbash:

 

I must have had a few "pops" when I wrote that....yeah they do I think....for some reason I was thinking or the cobra's crappy IRS

 

Ok some new info-

heads came in Monday, engine should be all together and ready to go in by monday or tuesday.
The Heads are beautiful, the shop says they are the best heads they have ever seen. sorry no pics forgot camera. final flow numbers on My heads are 309 intake (246) mid lift and 220 exhaust!
For those of you that dont know here is the full list of stuff that is going in the car-
Engine-
302 stroker
manley forged rods
forged cobra stroker crank manley
manley forged aluminum 3v pistons
livernois ported 3v heads custom valves
Comp 3v cams ( the most aggressive 3v cam comp makes)
3v intake charge motin plates
03 cobra TB
custom intake
prothane motor mounts

Fuel-
36# Frpp injectors
kenne bell Boost a pump
Drivetrain-
FRPP billet flywheel
spec stage 2 clutch
tr3650 with a .7 5th gear
frpp aluminum driveshaft
steeda tri-ax


Car WILL be done by end of next week, if not i will be pissed, i will have to go back to school without a car:wallbash: