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  #1 (permalink)  
Old 10-01-2008, 11:39 PM
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400 Vs 460

I am going to start a page showing different dyno runs we have done with the 400 compared to a 460. Here is the first dyno chart showing a 400 and a 460.
I will add details soon.

Click the image to open in full size.

This 460 has an nice RV cam and a good fresh rebuild. Very close to stock with a little cam.

This 400 is the last we did for a customer, it has the aussie heads and a hyd roller cam. I have a stock 400 with a cam, and a few other to compare.
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Old 10-01-2008, 11:47 PM
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I have an opinion, Why is torque figures so low for the 400? I expect more out of a 9.5:1 built with an rv cam, its as if the camshaft choice was poor and more throwing against HP than what it should have and not matching the head choice. I dont mean to insult no one with my opinion, its just an opinion.... I was going to make the same statement to the post you made about the 400 alone.... besides that interesting comparison...
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Old 10-02-2008, 04:57 AM
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What do you mean? The torque is almost identical to the 460, and has a flatter curve...? This is just an Aussie 2V headed 400. I thought it was a nice package, and I bet relatively inexpensive power.
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Old 10-02-2008, 09:03 AM
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I mean, i expected peak torque to ocur sooner with an rv cam and around 470-460lbs, also for it to fall sooner, anyways, look at 2500 rpm only 405 lbs of torque? i excpect an rv cam to give me at least 450lbs of torque down at 2000rpm work its way till 3500 then fall faster, so this engine was not built for a truck i guess...
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Old 10-02-2008, 12:25 PM
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http://www.ford-trucks.com/forums/77...-for-brad.html thats the built, anyways im sure it has a bigger cam than the usual rv, it woulb be cool to have the cam specs.
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Old 10-02-2008, 12:36 PM
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it's interesting but that 460 is sick, even a stock cam on a properly done rebuild properly tuned should be 350hp without even trying. put anything for a cam in a 460 and that hp and torque should easily be over 425 on BOTH. I have failed to see a 460 meet those numbers yet.
I know this forum wants to build the 400 up and convince everyone it's a wonderful motor, but comparing it to a improperly tuned or built 460 really doesn't do much IMHO. Those numbers for the 460 won't even meet stock specs from the early 70s right out of the factory.
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Old 10-02-2008, 04:02 PM
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Yea, something is wrong there. 60 more c.i. & no more power.
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Old 10-02-2008, 06:32 PM
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My factory 1971 manual says 500 ft lbs for a stock 460. That must be with
D0VE C heads for that year? That is a monster to untap!
But hey, I really like the 400 still, and always will. It is a unique motor to build up that wasn't a headliner at any time.
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Old 10-02-2008, 08:01 PM
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Quote:
Originally Posted by monsterbaby View Post
it's interesting but that 460 is sick, even a stock cam on a properly done rebuild properly tuned should be 350hp without even trying. put anything for a cam in a 460 and that hp and torque should easily be over 425 on BOTH. I have failed to see a 460 meet those numbers yet.
I know this forum wants to build the 400 up and convince everyone it's a wonderful motor, but comparing it to a improperly tuned or built 460 really doesn't do much IMHO. Those numbers for the 460 won't even meet stock specs from the early 70s right out of the factory.

I agree, even though I bought a set of 400 pistons from TMI last week and i am building a 400 at the moment. It looks like we are comparing a stock 460 to a built 400 what fun is that. I have no doubt that a built 460 will outperform a similarly built 400 any day. I have a 460 laying in my garage but right now it was cheaper to build a 400.
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Old 10-02-2008, 08:04 PM
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Quote:
Originally Posted by monsterbaby View Post
it's interesting but that 460 is sick, even a stock cam on a properly done rebuild properly tuned should be 350hp without even trying. put anything for a cam in a 460 and that hp and torque should easily be over 425 on BOTH. I have failed to see a 460 meet those numbers yet.
I know this forum wants to build the 400 up and convince everyone it's a wonderful motor, but comparing it to a improperly tuned or built 460 really doesn't do much IMHO. Those numbers for the 460 won't even meet stock specs from the early 70s right out of the factory.
Nice, a site Moderator talking **** about one of the sites MAJOR sponsors post..

Keep the dyno runs coming Tim, maybe one day you can dyno a 460 built by monsterbaby and be dazzled.
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Old 10-02-2008, 08:09 PM
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Nice, a site Moderator talking **** about one of the sites MAJOR sponsors..

Keep the dyno runs coming Tim, maybe one day you can dyno a 460 built by monsterbaby and be dazzled.

I didnt see anyone talking **** about any one or any thing. How about when my built 400 is done in the next few weeks we compare that to my built 460 when its done in 1-2 years.
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Old 10-02-2008, 08:13 PM
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Colo you might want to reconsider your post, yes I am a moderator BUT NOT IN THIS SECTION. I have met Tim and he has seen what i can do for building motors so don't even go there and yo violated 2 forum guidelines in ONE post.

Now all that said when it comes to posting I am no different as a moderator then anyone other poster. I am allowed to have an opinion, I am allowed to state facts, I can make posts if I want too and hey guess what I can even question site sponsors if I think the info is wrong because guess what, Tim isn't posting as a sponsor with this thread.

Now if you are trying to claim that a site sponsor is writting threads advertising in the forums well then you would be claiming Tim is violating the guidelines too. so is that what your claiming? (No Tim I don't believe thats what your doing for a second )
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Old 10-02-2008, 08:22 PM
Colo79Ford Colo79Ford is offline
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Quote:
Originally Posted by monsterbaby View Post
Colo you might want to reconsider your post, yes I am a moderator BUT NOT IN THIS SECTION. I have met Tim and he has seen what i can do for building motors so don't even go there and yo violated 2 forum guidelines in ONE post.

Now all that said when it comes to posting I am no different as a moderator then anyone other poster. I am allowed to have an opinion, I am allowed to state facts, I can make posts if I want too and hey guess what I can even question site sponsors if I think the info is wrong because guess what, Tim isn't posting as a sponsor with this thread.

Now if you are trying to claim that a site sponsor is writting threads advertising in the forums well then you would be claiming Tim is violating the guidelines too. so is that what your claiming? (No Tim I don't believe thats what your doing for a second )
IM bored, and i have a keyboard...

I think that the 460 came stock with impressive numbers... early on... and you cant argue that the "best" combo for money invested and performance expected is a ford 514... out of chevy, dodge, BOP, and ford...
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Old 10-02-2008, 08:26 PM
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Click the image to open in full size.

Here is a 400 all stock fresh rebuilt, better pistons and a Crane cam.

I figured I would get these comments, I am working on a web page to detail
all the engine components.

The idea of this thread was not to show that the 400 is a better engine than the 460, but to allow the people who are contemplating weather they should
pull there 400 and install a 460.

This is the only stock 460 we have built and dyno'd for a customer. Last time I talked to the customer, he said it was a great running engine.

Why it does not have the power you think it should, I don't know. It is a '77-'79 460. If you have another dyno chart of a stock rebuild with an RV cam, lets see it.

The owner of the engine was maybe going to stop by here and give his opinion, but again, not a lot of people dyno a stock engine.

I can't disagree with your comments, but I also know we do not try to build customers crappy engines.
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Old 10-02-2008, 08:30 PM
Colo79Ford Colo79Ford is offline
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But, i also believe that a smaller HP engine can be more dependable and versitile than a higher HP engine. There are a ton of ways to make a smaller HP engine run off and hide from a higher HP engine in a same weight vehicle. Its fun to run within a second of competitors who have "close to 500 HP" in their 3250 pound cars in my 5,860 pound truck with maybe 240 hp to the ground.
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Old 10-02-2008, 08:30 PM
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Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > 335 Series- 5.8/351M, 6.6/400, 351 Cleveland

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