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Re: Engines - Triton vs Vortec
fatvanman #451688 March 07th 2011 3:30 pm
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Originally Posted by HiFlow5 0;6878238 from Automotive Forums / 5.4 Triton vs 5.3 Vortec
I don't have any experience with the Vortec motor, but I had a 99 F150 with the 5.4 Triton V8. That motor was great and had a ton of torque. I was able to move a 40 Yard dumpster sideways and into position in my driveway. The dumpster was half full of shingles and roofing waste and the truck moved it with ease. I was getting about 14 MPG, it was my daily driver for 3 years and I didn't have to do anything other then regular oil changes on the motor for maintenance.

Here is a good report for the 5.4 Triton. It seems that the torque range was pretty good and this guy didn't face problems...
Does anyone have a similar testimonial for the 5.3 Vortec???



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Re: Engines - Triton vs Vortec
fatvanman #452211 March 09th 2011 5:12 am
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Originally Posted by fatvanman
Max torque at such a low RPM means this engine doesn't have a wide RPM range at all, rather like a diesel. It would mean choosing your gear ratio's very carefully as you don't want cruising RPM 500RPM past max torque. If you are always towning then that would be the better choice, but for everyday driving I would rather sacrafice a bit of lower range torque for a wider performance envelope and wider torque range. So the Triton would have a 16 lb.ft but the Vortec 5.3 would have more torque over a broader RPM range making it perform better overall.


OK... I'm a little confused.... if an engine produces more torque at a higher rpm, then that means it has a better range of torque???

I'm also confused that the Triton would produce more low end torque over the Vortec with the Vortec being a pushrod. I know pushrods are supposed to have more low end torque.. or is that all down to tuning???

Originally Posted by fatvanman
the 5.3 Vortec in the Tahoe's & pick-ups uses a taller intake than passenger cars giving it much better low end torque at the expense of top end HP. That is what you would want to use in a van anyway, and should be the specs you are comparing. They should be pretty spot on with the 5.4 Triton, if maybe a little higher. But again, I mainly reccomended the Vortec due to better availability, lower parts costs, and narrower size to aid fitment since upgrading performance isn't a priority to you. But that same upgrade ability means you have more options as well.

You did mention that having more low end torque is a better deal for a van. Or should I consider sacrificing some low-end torque with the Vortec..

Re: Engines - Triton vs Vortec
Knightjp #452271 March 09th 2011 11:27 am
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Pushrods more low end torque? Where did that rubbish come from?

There is nothing you can divine from a max tq number made at one rpm vs another w/o seeing the chart other than one made more max tq than the other.

Re: Engines - Triton vs Vortec
M_S #452272 March 09th 2011 11:36 am
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Originally Posted by M_S
Pushrods more low end torque? Where did that rubbish come from?

There is nothing you can divine from a max tq number made at one rpm vs another w/o seeing the chart other than one made more max tq than the other.
????

Re: Engines - Triton vs Vortec
Knightjp #452275 March 09th 2011 11:52 am
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I wasn't suggesting that one design has inherent advantages over another as there are too many variables that can affect the outcome. However, overhead cam design generally will have the advantage in max RPM due to the reduced reciprocating weight of it's valvetrain, and a large majority of engines employing that design take advantage of that. And since that used to mean a drop in lower RPM torque (prior to variable valve technology) I can see why some have that impression.

Now, back to KnightJP's last comment - yes. A van would be better off with more low end torque, so a high rpm screamer isn't the best idea. In comparing the specs you gave for the Triton and Vortec, the Triton displays a small advantage in maximum torque, but by the listed RPM one can infer that the power falls off rapidly after that. The Vortec has a slight disadvantage in max torque, but by the numbers you gave showing the higher RPM, the Vortec is building torque over a wider RPM which in my mind offsets that difference. Of course either engine can be modified to suit whatever your needs are, but you stated you wanted stock comparisons. And again, I am only offering one opinion based on limited info. Take what you will from it. Both engines are very well designed and will last a long time. And either one should suit your needs. The question at that point becomes simply which one you'd rather see under the hood?


Colin
aka "Fatvanman"
1975 Chevy G20 Shorty "Lunchbox"

"The great ones never die, they just get older, fatter and drive better vans!"

http://www.cardomain.com/ride/3913766/1975-chevrolet-van
Re: Engines - Triton vs Vortec
Knightjp #452277 March 09th 2011 11:55 am
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What part did you not get?

Re: Engines - Triton vs Vortec
Knightjp #452286 March 09th 2011 12:16 pm
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Totally agree about overhead/rpm.

I totally disagree about which one is better per the specs given. First, where did the data come from and was it obtained with the same equipment? Second, the numbers are meaning less w/o seeing the chart. Did the one with more tq spike at that rpm and die off? Did the one with less have a nice flat curve? All those numbers are good for is advertising fodder to convince a consumer into one new vehicle over the next.

The OP originally wanted to stuff a V8 in a VW. If that is the true intention, then all of the wrong questions are being asked. If you are doing the work, stick in what will minimize the fab. If you are paying someone to do the work, let them decide which powerplant will fit or be prepared to pay them more making what you decide fit.

In the big scheme of things, quibbling over a bit of power is the wrong direction to go when you are wanting to stuff a non-original powertrain in a VW bus.


Re: Engines - Triton vs Vortec
Knightjp #452291 March 09th 2011 12:22 pm
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This is what I tried to tell him 6 pages ago.....


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Engines - Triton vs Vortec
M_S #452292 March 09th 2011 12:23 pm
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Originally Posted by M_S

In the big scheme of things, quibbling over a bit of power is the wrong direction to go when you are wanting to stuff a non-original powertrain in a VW bus.


This is what I tried to tell him 6 pages ago


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
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