how come my car doesn't roll like new cars
03-02-2009, 03:07 AM
#1
4th Gear Member
Thread Starter
Join Date: Jun 2006
Location: Upland, California
Posts: 1,246
how come my car doesn't roll like new cars
as soon as i let go of the gas my car is slowing down pretty fast even down a hill (302/c4)
i upped the idle a little and it actually is better at rolling but anyways i was just wondering is it becasue i have straight pipes and the back pressure just slows down the car or what?
i upped the idle a little and it actually is better at rolling but anyways i was just wondering is it becasue i have straight pipes and the back pressure just slows down the car or what?
03-02-2009, 06:50 AM
#6
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Join Date: Feb 2007
Location: state of confusion
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as soon as i let go of the gas my car is slowing down pretty fast even down a hill (302/c4)
i upped the idle a little and it actually is better at rolling but anyways i was just wondering is it becasue i have straight pipes and the back pressure just slows down the car or what?
i upped the idle a little and it actually is better at rolling but anyways i was just wondering is it becasue i have straight pipes and the back pressure just slows down the car or what?
Have you checked your tire inflation pressures lately? Or replaced your tires recently? Done any mods that affect ride height?
All of the manufacturers spend considerably more time and expense to minimize aerodynamic and rolling drag than they did 40 years ago.
Norm
03-02-2009, 11:31 AM
#7
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Location: Hills of California
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my car rolls like new ones unless im in 2nd gear at 3500 rpm and let off the gas real quick it actually pulls you forward out of the seat just a bit 
When on level ground I can roll the car backwards when sitting in the seat. I open the door and can use my left leg to push the car back takes little effort. In the garage naturally don't try this at an intersection.....
-Gun
When on level ground I can roll the car backwards when sitting in the seat. I open the door and can use my left leg to push the car back takes little effort. In the garage naturally don't try this at an intersection.....
-Gun
03-02-2009, 06:35 PM
#8
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in neutral my car rolls forever just like newer automatic cars in drive they just keep speeding up down a hill
my rear end gears are 3.80 and no new changes recently its just always been like that where u let go of gas and bam its slowing down
my rear end gears are 3.80 and no new changes recently its just always been like that where u let go of gas and bam its slowing down
03-04-2009, 03:30 PM
#9
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Join Date: Sep 2008
Location: The garage (near SF bay- Calif)
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All the new automatics have overdrive 4th or 5th gears to get better MPGs.
Try driving the new car in 2nd or 3rd gear and it will "slow down" just like your Mustang.
You can make it "roll" like the newer cars by swapping out your 3.80 gears for 2.70 in the rear (The 3.80s are ment for drag racing so your accelleration will suffer but MPGs will be better). A better option is swapping your C4 for an overdrive trans like an AOD or T-5.
Try driving the new car in 2nd or 3rd gear and it will "slow down" just like your Mustang.
You can make it "roll" like the newer cars by swapping out your 3.80 gears for 2.70 in the rear (The 3.80s are ment for drag racing so your accelleration will suffer but MPGs will be better). A better option is swapping your C4 for an overdrive trans like an AOD or T-5.
Last edited by 1971mach1; 03-04-2009 at 03:41 PM.
03-04-2009, 03:38 PM
#10
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Location: Hills of California
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dont forget newer cars are missing a lot of pistons and displacement so they dont compression brake nearly as well as these V8s. In drive when coasting the large v8 puts quite a bit of drag on the system.
-Gun
-Gun