Got a van with at 351 (1993) and it does my towing job adequately. Question is: is the 5.4L engine an improvement?

Or am I better off building a stroker motor for towing?

 

I'm still voting for the V10.

 

The 5.4 is a big improvement over the 351. Has much more power and torque. The V10 is real nice though!! Benjamin

 

I would much rather have a 351, mainly because I could do some big hp improvements without a supercharger. 385hp without a blower? sounds great!

 

Don't want to start any battles. But you can get 400 hp out of a 5.4 naturally aspirated. And I don't think it would cost any more than getting that much out of a 351. Benjamin

 

The current 5.4L in the f150 is good for 260hp, how can you get 400hp without going internal? Pulleys, chip, mass air flow with a K&N, header, exhaust, throttle body, plugs, wires are availiable, but don't add 140hp. This isn't an arguement, just an exchange of opinions, and hopefully some insight if there is other options to gain hp. What else can be done without a blower strapped on? Any info would be greatly appreciated. I have a 4.6L, and would like to know if it can work on my triton.

 

You would have to go internal. But you would have to do the same with the 351 to get that much. I believe that OHC engines have a big advantage over regular OHV engines. They can be run harder and can rev higher. Benjamin

 

[updated:LAST EDITED ON 07-Mar-02 AT 10:53 PM (EST)]I agree Benjamin, but the problem with the triton there isn't any internal mods availiable, that I could find. You can modify the Mustang tritons, but nothing is compatible with the truck tritons according to the sources I've talked to. If there was cams, cylinder heads, intake manifolds availiable I wouldn't think about swapping, but there isn't. If you know something I don't about internal mods, such as a source for these mods, please let me know. It would be greatly appreciated.

 

400 HP on a naturaly asperated 5.4??? Do tell, im working hard to find anyhting t=other than a charger (blower) to get any kind of result out of mine. Ive done everything from K&N, Chip, Throttle body spacer, Exhaust... What else is there that i could see really any differnce. Ive gone up against 351 windsors all over, and im still getting my butt kicked hauling up the highway in the hills. I would really apreciate feed back on what people have tried without going internal. Im concidering looking into buying a 5.4 block and just custom building it to get what im looking for with naturaly asperated. My problem is, if i were ot charge my truck, I woudl in time eventually end up tearing the engine out of my truck to rebuild, so why not do it now?
Thanks
S

 

I read an article in a Muscle Mustang and Fast Fords magazine where they converted a 5.4 to use 4.6 4-valve DOHC Cobra heads. That would smoke any nat. aspir. 5.8

 

I'm sure if someone had the knowledge, resources and cash you could get 400 hp out of a 5.4, or 350hp out of a 4.6, but it's all custom work. There's nothing you can look up in a catalog and price out, order, and slap in. A 5.8L, you could crate order a 385hp motor compared to custom building a 5.4 at a huge expense. I wish my '97 had a 351, or 302 compared to either new tritons, because i could build either engine up in the 300hp plus range, and still run pump gas. Can't do it on a triton without spending huge cash.

 

I was thinking about the 5.4 in the cobra r. I think SVT bought the parts for the engine instead of making them. I don't know where from. I agree with you about it being much easier to find parts for a 351. Alot of the parts for the 4.6 will work on the 5.4. I am almost positive I saw performance parts for the 5.4 in a book somwhere but I can't find them. I may be wrong. Benjamin

 

So, back to my original thought....

For towing, I'm not going to build a big HP motor. I need torque. Sounds like a 351 stroker would be easier and available. Or I could do a V10.

 

actually these triton engines already have a very good bottom end. i think that the way to get hp out of these triton engines or any engine fer that matter is in the heads. a good cam, the right compression, and the properly ported heads will make or break an engine!


-nathan

 

I agree redranger1, but there isn't anything availiable for tritons in the trucks, just the mustang. So I'm either going to pull out the 4.6L and drop in a carbed 302 around 325-350hp, or trade the bloody thing.