06-12-2013, 08:13 PM | #29 | |
Drives: Toyota Join Date: Jun 2013
Location: San Antonio, Texas
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Look, you can kid yourself all you want, but the overhead cam design produces more HP per cubic inch and is a better design than pushrods. If you don't believe that then I will let you believe what you want to believe. |
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06-12-2013, 08:14 PM | #30 | |
Drives: 2011 SS/RS LS3 Join Date: Oct 2010
Location: Miami
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Cost- probably cheaper for the hemi Weight- they weigh the same Packaging- They fit the same vehicles Fuel Economy- The same rating Weight distribution- Hemi's center of gravity is lower Power- HEMI makes 100 more horsepower! I get better fuel mileage with my '11 1500 longhorn crewcab then I did with my 2002 durango w/ a 4.7l. The durango weighed less and had much less power. Same gear ratio and same transmission! By the way, the Ford 427 SOHC was HUGE!!! it wouldn't fit in most vehicles. It mad a great swap for a boss 429 hemi that had the shock towers modified at a factory. |
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06-12-2013, 08:17 PM | #31 | |
Drives: Toyota Join Date: Jun 2013
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06-12-2013, 08:19 PM | #32 |
Drives: 2011 SS/RS LS3 Join Date: Oct 2010
Location: Miami
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You can't compare a DOHC motor to a pushrod motor with equal displacement.
The added displacement of the pushrod motor is one of it's inherent advantages. A DOHC motor must be smaller to fit in the same space and weigh the same. Get over the displacement and look at the engines for what they are! |
06-12-2013, 08:22 PM | #33 | |
Drives: Toyota Join Date: Jun 2013
Location: San Antonio, Texas
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Again, if push rod motors are so great, why are all economy cars, motorcycles, and other cars using overhead cams? If fuel economy is so good with pushrod motors, why are all economy cars using overhead cams? In short, the facts do not back up anything you are saying. Look at other cars. Where are all your great pushrod motors? |
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06-12-2013, 08:33 PM | #34 |
Drives: 2011 SS/RS LS3 Join Date: Oct 2010
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You just don't get it.
You don't understand about the physical size of the engines. The weight and where it's placed in the engines. The cost of manufacturing the engines. The amount of parts in the engines. The fuel economy of the engines. Here's another example: Boat motors. With 4-stroke motors why do they still make 2-stroke motors? They weigh less They make more torque They have less parts They are cheaper to manufacture There's more then one way to skin a cat. Just because two of the largest automobile manufacturers decided to embrace pushrod engines doesn't meat they are antiquated. With todays technology you have pushrod engines that can rev from 600 to 7,000rpm without a hiccup. They are light, small in size, big in displacement, cheaper to produce, reliable. With direct injection, multi displacement, and VVT they are only going to get better. Just wait until the C7 corvette's LT1 engine has some time to develop an aftermarket following! |
06-12-2013, 08:36 PM | #35 | |
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06-12-2013, 08:40 PM | #36 | |
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Why not more hp / lb (engine weight)? Why not hp / number of valves? Why not hp / number of cams ? I have given you category after category of where pushrod motors are superior and you focus on one. Do you not understand that displacement is limited on the 5.0 due to packaging. You have theoretical gains based on displacement but don't you understand that engine has to go into a car under a good and the packaging problems of a overhead cam engine restrict displacement. |
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06-12-2013, 08:41 PM | #37 | |
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06-12-2013, 08:42 PM | #38 | |
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Where do those cars originate from? What markets are they marketed in and do those countries have tier licensing based on displacement or taxes? |
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06-12-2013, 08:44 PM | #39 | |
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06-12-2013, 08:46 PM | #40 | |
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06-12-2013, 08:46 PM | #41 | |
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06-12-2013, 08:48 PM | #42 | |
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