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Speed Shop Tuning and Modification Increasing Horsepower/Torque/MPG
21 messages, Last post on Sep 27, 2007 at 5:36 AM
You are in the Speed Shop Tuning and Modification Forum. Your Host is steve_
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Replying to: illicit_hunter (Aug 17, 2005 5:39 am) You can probably find a freer-flowing catalytic for the car and that might give you something like 8 HP. For fuel mileage you can run harder tire pressures and not use your AC as much, and you might try synthetic oil as well. As for more HP and torque, you're going to have to go into more exotic modifications and that can get expensive...you might investigate custom throttle bodies, custom intake system and finally internal engine modifications.
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Replying to: Mr_Shiftright (Aug 17, 2005 6:41 am)
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Replying to: illicit_hunter (Aug 17, 2005 5:39 am) |
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| i have a standard 2000 4.7 dakota sport. its a lil quick for what it is. ive put on it gibson headers with the racing gibson duels high flow cat k&n tube with filter a throtal body spacer and a tornado can you estimate the power it has now...i can stay with 4.6 mustang gt's now | |
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I HAVE A 327 11:5-1 COMPRESSION 2.02 INTAKE VALVES ON THE DUMPLE HUMP FUELLEE HEADS LUNATI 2-6OOORPM RACE CAM WITH VICTOR JR INTAKE AND MIGHT DEMON 650CFM CARB ON TOP BOTTEM END IS BRAND NEW AND WAS BALANCED WHEN IT WAS BUILT IGNITION IS HEI SUPERCOIL AND I RUN HOLLEY ELECTRIC FUEL PUMP. THIS SET UP IS INSIDE A 81Z28 AND I AM WONDERING WHAT KIND OF HORSEPOWER CAN I EXPECT THIS THING TO MAKE BEFORE THE VICTOR JR INTAKE AND DEMON CARB IT RAN A SAD 14.2 IN THE 1/4 MILE AND I WONDER WHAT KIND OF POWER IT MAKES NOW WITH THE NEW TOP END. ANY ESTIMATES WOULD BE WELCOME AND IM JUST LOOKING FOR A GUESS UNTIL I CAN GET IT ON A DYNO. THANKS ALOT AND KEEP MAKIN THAT POWER |
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Just installed a K&N air filter assy. on my 4.7 Quad. Very neat installation, the hardest part was putting the rubber seal around the new air box. At normal acceleration and speeds, sounds is almost the same as stock, but under hard throttle the noise is high. A dyno print out was in package, at 4400 rpm they showed an 8 HP gain. I doubt that I've ever had the rpms over 4000 anyway. I'll monitor mpg. Power seems smoother and a little more responsive?
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Replying to: mtrialsm (Apr 03, 2006 3:43 pm) |
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Drove to Fla. last week, maybe a slight increase in MPG? Coming back home and after putting 400 miles on truck with new K&N intake, the engine stumbled and sputtered a couple of times at a red light. Then the check engine light came on. Engine smoothed back out and ran flawless for the next 100 miles back home. Checked the mal. engine code and it was "O2 sensor, lean". I reset the code and will monitor for a repeat. Has anyone esle seen this after going to a high flow intake system? |
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Replying to: mtrialsm (Apr 17, 2006 7:09 am)
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