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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #16  
Old 06-08-2014, 06:21 PM
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Check out this link to Horsepower TV. They take a 4.9 to a higher (maybe highest) level. 306 ft/lb and 203 hp. Pause the video on the first dyno graph and you will see the torque is falling sharply at 2500 where the dyno starts recording. The peak torque is somewhere between 1500-2000. They have extended peak horsepower out to 4200 with a wide power band. This engine will drive like an electric motor, strong from idle to 4500.

By comparison my 7.3 N/A diesel is rated 360 fl/lb @1400 and 185 hp @3000. It is a stout motor but still no racer.

Hopping Up an Old Skool Six Part 2 | Engine Power | PowerNation TV - Full Episodes
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Old 06-08-2014, 06:49 PM
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Originally Posted by Macs1964F100 View Post
Check out this link to Horsepower TV. They take a 4.9 to a higher (maybe highest) level. 306 ft/lb and 203 hp. Pause the video on the first dyno graph and you will see the torque is falling sharply at 2500 where the dyno starts recording. The peak torque is somewhere between 1500-2000. They have extended peak horsepower out to 4200 with a wide power band. This engine will drive like an electric motor, strong from idle to 4500.

By comparison my 7.3 N/A diesel is rated 360 fl/lb @1400 and 185 hp @3000. It is a stout motor but still no racer.

Hopping Up an Old Skool Six Part 2 | Engine Power | PowerNation TV - Full Episodes
All the people over on fordsix.com were saying there was a lot more left and they didn't do much or anything right on that engine. If I remember right, they never fix much to the head.
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Old 06-08-2014, 06:54 PM
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Originally Posted by Macs1964F100 View Post
Check out this link to Horsepower TV. They take a 4.9 to a higher (maybe highest) level. 306 ft/lb and 203 hp.
Cool video but it's also a painful demonstration of why you don't even bother trying to get more out of the old farm tractor motor, all that work and it doesn't even make the HP and torque a bone stock 5.8 does.
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
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Old 06-08-2014, 08:12 PM
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Originally Posted by Phil Woolfson View Post
Spray some Kroil
I miss kroil. You gotta buy it online now or something.
That stuff is the best (or the old stuff was anyway, rules have changed since 20 years ago)

I'd suggest turbo. If someone was all dead set on rebuilding and making power from a 300-6, I say port the snot out of the head, bigger valves and focus on exhaust. Then build a turbo setup for it using a 5.9 cummins turbo and whatever intercooler you wanna stuff in front.

But yeah, not much to gain from all your work and money if you leave it n/a.
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  #20  
Old 06-09-2014, 12:53 AM
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Originally Posted by Conanski View Post
Cool video but it's also a painful demonstration of why you don't even bother trying to get more out of the old farm tractor motor, all that work and it doesn't even make the HP and torque a bone stock 5.8 does.
4.9 vs 5.8, you would expect more from 20% more displacement and nearly 25 years of technology development. And you will be spinning the 5.8 another 1000 rpm to get those numbers. If your are working the truck all day long it is nice to have the power centered around 2000. If you use the truck as a car most of the time you will love the 5.8, just spin it up when you need the power.
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  #21  
Old 06-09-2014, 07:24 AM
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Originally Posted by Macs1964F100 View Post
4.9 vs 5.8, you would expect more from 20% more displacement
And you can have more without much trouble or expense and no you don't need to spool it to 3000rpm to get it.
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
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  #22  
Old 06-09-2014, 07:36 AM
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Originally Posted by Conanski View Post
And you can have more without much trouble or expense and no you don't need to spool it to 3000rpm to get it.
That's why I said for the same money, you can swap in a 351 and make more power and not be maxed out.

You could easily pick up a low mile 351 from anywhere, throw in a nice cam that doesn't ruin your low end, throw on some gt40 heads or better if you choose to do so, and you have a hell of a strong truck for the cost of a turbo and tuning in the 4.9.

I was going to but a 4.9 block and build it, but it seems like such a waste after I looked at the outcome.
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  #23  
Old 06-09-2014, 10:16 AM
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This is entertaining reading.

I've owned a total of 3-4.9L six engines in trucks. They have all kinds of torque at the low end, where it's needed.

My latest 4.9 is a '94. It's slightly weaker than the old carbed engines, but can still hold it's own.

I don't understand the need for more power from an engine that was never designed to do what you guys seem to want to do to it.

I'd own another 351 engine, but in these days of $4 gallon gasoline, the 351 and the other V8's are a deal breaker for me. My last truck before this one was a 351, and it never got better than 8-9 mpg. I bought it the same week that gasoline did the first jump to $3 a gallon. Awful timing for sure.

I'd rather spend my money on making my truck as nice as I can, rather than spending all my extra funds just keeping gasoline in both tanks, you know?
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  #24  
Old 06-09-2014, 10:21 AM
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Originally Posted by Holmesuser01 View Post
This is entertaining reading.

I've owned a total of 3-4.9L six engines in trucks. They have all kinds of torque at the low end, where it's needed.

My latest 4.9 is a '94. It's slightly weaker than the old carbed engines, but can still hold it's own.

I don't understand the need for more power from an engine that was never designed to do what you guys seem to want to do to it.

I'd own another 351 engine, but in these days of $4 gallon gasoline, the 351 and the other V8's are a deal breaker for me. My last truck before this one was a 351, and it never got better than 8-9 mpg. I bought it the same week that gasoline did the first jump to $3 a gallon. Awful timing for sure.

I'd rather spend my money on making my truck as nice as I can, rather than spending all my extra funds just keeping gasoline in both tanks, you know?
Gas isn't a major concern here. I have a very short commute, I even walk some days. My wife's car gets 40 mpg so we take it when we go on trips. My truck is my toy so I don't care if I get 1 mpg.
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  #25  
Old 06-09-2014, 02:16 PM
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Originally Posted by Kregj View Post
I have a 300 inline6 4.9l in a 96 ford f150 4x4 and I want more horsepower. What could I do that is reasonably priced???
I've seen some sixes scream (we built one years ago that had over 350 hp) and smoked a built 383 Road Runner (in its first race at the track)...........here are some ideas:


Ford ’87-’96 4.9L (300) EFI Fuel Injector and Pressure Upgrades


Alternatively, locate an older six and try this:

How to Upgrade Performance in Vintage Mustang Six-Cylinder Engines - Mustang Monthly Magazine
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  #26  
Old 06-09-2014, 04:40 PM
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Gas isn't a major concern here. I have a very short commute, I even walk some days. My wife's car gets 40 mpg so we take it when we go on trips. My truck is my toy so I don't care if I get 1 mpg.
460 F250 can be had for $2,000 to $3,000 in South Texas. The 4.9 F150 will go for 3,000-4,000. If the 4.9 is not what you want then trading trucks would be the easiest solution unless it has sentimental value or is in exceptional shape.
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  #27  
Old 06-09-2014, 04:43 PM
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Originally Posted by Macs1964F100 View Post
460 F250 can be had for $2,000 to $3,000 in South Texas. The 4.9 F150 will go for 3,000-4,000. If the 4.9 is not what you want then trading trucks would be the easiest solution unless it has sentimental value or is in exceptional shape.
My truck is in exceptional shape and I had every intention of building an engine when I bought it. I actually sold my previous engine to pay for the whole truck.
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  #28  
Old 08-03-2014, 03:15 AM
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Subscribed, for the high perf. links on the 4.9.
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Old 08-03-2014, 03:15 AM
 
 
 
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