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SVT Shelby GT500
Experience with Kenne Bell Gimme 5 intake
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<blockquote data-quote="Bad Company" data-source="post: 15571539" data-attributes="member: 141815"><p>I've thought about this same problem a lot. It is the reason I didn't install a Gimme 5 with the 3.6L SC and went with a painted JLT 148mm. I also talked with numerous people about the differences between the two CAI. Yes the Gimme has reduced shielding from the engine bay, but in reality so does the JLT once you install a taller hood to clear a taller SC. Also the JLT air box isn't made to the same specifications as the one Ford made for the car concerning its shape, so I don't think the upper gasket seals very well to the stock hood. Both air cleaner assemblies do achieve a ram air effect from the front headlight pocket to the filter in the same manner the stock filter assembly does once the car is moving. Both air cleaner assemblies do draw under hood hot air once the car is stopped in traffic. This can be monitored by watching the IAT1 temperatures while driving in stop and go traffic. </p><p></p><p>Now for the difference in size, the JLT is a 148mm but in reality the max internal measurement is much smaller at close to 5" in diameter with the very thick walls of the tubing. But the interior surface of the pipe is also extremely rough which in of itself creates turbulence in the air flow. High turbulence inside the pipe hinders optimum CFM flow of air. The Gimme is 5" with a much thinner material for wall thickness, I'd guess it would be 12 gauge this would be a .16" reduction in the internal measurements or 4.84". This actual brings the 2 pipes very close to each other in internal size for similar flow rates in my mind. The big difference would be how the turbulence inside the JLT pipe effects flow over the Gimme 5 with its smooth walls. Without a flow bench to determine a winner I can only speculate, but my gut is telling me the Gimme is going to win by a very small amount. Lets call them even to each other in this category.</p><p></p><p>Now lets look at the filter differences. Here there is a big difference in the size and shape. JLT I believe rates the CFM of airflow for their filter at 2150CFM. Kenne Bell rates the airflow of their filter at 2450 CFM. Well both are flowing more air than a 1000 RWHp car requires. The big difference will be as the filter media gets dirty. The advantage will be to the Kenne Bell because of its much larger filter media surface area. This allows it to to keep its advantage in flow over the smaller filters. It takes roughly 1800CFM of airflow for a 1000 RWHp engine in these cars. As you can see the filter media of the JLT doesn't have a large amount of extra flow capacity before dirt on the filter can effect airflow throughput to the engine for a loss of Hp. The other thing I see about the 2 filters is the KB does incorporate in the base of the filter a molded velocity style stack to direct airflow into the piping. Again something without a flow bench and air turbulence meter to test it leads me to speculate that it is an advantage between the 2 filters. </p><p></p><p>If you're going for a max Hp effort the advantage in my mind is going to be the KB. For a street car at 800 RWHp outside of having to clean the smaller JLT filter more often I don't see any differences. So the OP question of aesthetics becomes his real concern, but with that comes the issue of finding the proper silicone hose adapter to fit between the TB of his current set up and the KB Gimme 5.</p></blockquote><p></p>
[QUOTE="Bad Company, post: 15571539, member: 141815"] I've thought about this same problem a lot. It is the reason I didn't install a Gimme 5 with the 3.6L SC and went with a painted JLT 148mm. I also talked with numerous people about the differences between the two CAI. Yes the Gimme has reduced shielding from the engine bay, but in reality so does the JLT once you install a taller hood to clear a taller SC. Also the JLT air box isn't made to the same specifications as the one Ford made for the car concerning its shape, so I don't think the upper gasket seals very well to the stock hood. Both air cleaner assemblies do achieve a ram air effect from the front headlight pocket to the filter in the same manner the stock filter assembly does once the car is moving. Both air cleaner assemblies do draw under hood hot air once the car is stopped in traffic. This can be monitored by watching the IAT1 temperatures while driving in stop and go traffic. Now for the difference in size, the JLT is a 148mm but in reality the max internal measurement is much smaller at close to 5" in diameter with the very thick walls of the tubing. But the interior surface of the pipe is also extremely rough which in of itself creates turbulence in the air flow. High turbulence inside the pipe hinders optimum CFM flow of air. The Gimme is 5" with a much thinner material for wall thickness, I'd guess it would be 12 gauge this would be a .16" reduction in the internal measurements or 4.84". This actual brings the 2 pipes very close to each other in internal size for similar flow rates in my mind. The big difference would be how the turbulence inside the JLT pipe effects flow over the Gimme 5 with its smooth walls. Without a flow bench to determine a winner I can only speculate, but my gut is telling me the Gimme is going to win by a very small amount. Lets call them even to each other in this category. Now lets look at the filter differences. Here there is a big difference in the size and shape. JLT I believe rates the CFM of airflow for their filter at 2150CFM. Kenne Bell rates the airflow of their filter at 2450 CFM. Well both are flowing more air than a 1000 RWHp car requires. The big difference will be as the filter media gets dirty. The advantage will be to the Kenne Bell because of its much larger filter media surface area. This allows it to to keep its advantage in flow over the smaller filters. It takes roughly 1800CFM of airflow for a 1000 RWHp engine in these cars. As you can see the filter media of the JLT doesn't have a large amount of extra flow capacity before dirt on the filter can effect airflow throughput to the engine for a loss of Hp. The other thing I see about the 2 filters is the KB does incorporate in the base of the filter a molded velocity style stack to direct airflow into the piping. Again something without a flow bench and air turbulence meter to test it leads me to speculate that it is an advantage between the 2 filters. If you're going for a max Hp effort the advantage in my mind is going to be the KB. For a street car at 800 RWHp outside of having to clean the smaller JLT filter more often I don't see any differences. So the OP question of aesthetics becomes his real concern, but with that comes the issue of finding the proper silicone hose adapter to fit between the TB of his current set up and the KB Gimme 5. [/QUOTE]
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Experience with Kenne Bell Gimme 5 intake
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