Car falling off in higher gears?
10-06-2008, 03:23 AM
#1
Thread Starter
Join Date: Jul 2008
Location:
Posts: 27
Car falling off in higher gears?
Hey guys, Young mustang user ( Still learning )
I have compared my car to other cars with around the same ET's that i run, and my car through first and second or from a dig, my car blows them out and its not really close at all, but say we start in 3rd, from a roll, they pull on me, noticeably and even just with driving the car just seems to fall on its face once i hit 3rd. Any ideas?
Things to consider:
4.10 gears
Vortech blower ( non intercooled )
LT headers
*Exhaust system that does a U-turn for side exhaust.
20' carrol shelby wheels
car weighs almost 4000 pounds with me in it
Im thinking the exhaust might be one of the bigger problems, i dont think its just the gearing..
Help appruciated! Thanks guys.
I have compared my car to other cars with around the same ET's that i run, and my car through first and second or from a dig, my car blows them out and its not really close at all, but say we start in 3rd, from a roll, they pull on me, noticeably and even just with driving the car just seems to fall on its face once i hit 3rd. Any ideas?
Things to consider:
4.10 gears
Vortech blower ( non intercooled )
LT headers
*Exhaust system that does a U-turn for side exhaust.
20' carrol shelby wheels
car weighs almost 4000 pounds with me in it
Im thinking the exhaust might be one of the bigger problems, i dont think its just the gearing..
Help appruciated! Thanks guys.
10-06-2008, 06:04 AM
#3
Multi-Tasking Moderator!
Join Date: Nov 2006
Location: Detroit Rock City!
Posts: 15,618
I have the 3.55 and side exhaust and have not noticed any drop in the top end until 6200+ RPMs. I suspect I have lost little to no HP having side exhaust....sounds cool as hell too!
Last edited by mygt500; 10-06-2008 at 11:10 PM.
10-06-2008, 07:44 AM
#4
4th Gear Member
Join Date: Mar 2006
Location:
Posts: 1,470
It's always best for your car's engine to be running at an rpm where the torque curve is at or near its peak at the start of a roll race. If it's running at an rpm that's below the torque peak, then it may be better to use the next lower gear.
I don't know at what rpm your S/C engine hits its peak torque, but for a N/A S197 GT it's approx. 4500 rpm.
I don't know at what rpm your S/C engine hits its peak torque, but for a N/A S197 GT it's approx. 4500 rpm.
10-06-2008, 04:24 PM
#5
Thread Starter
Join Date: Jul 2008
Location:
Posts: 27
Which is why i asked, thank you for your input.
yes my max torque in my car on the dyno was at 4900 rpm. i just figured it would pull alot harder then it does in the higher gear because its is similar to a turbo...
10-06-2008, 08:36 PM
#7
Thread Starter
Join Date: Jul 2008
Location:
Posts: 27
My brother said the gap between second and third in the tranny's in these cars is big.
I think it just may be the jump between gears, but the car pulls really hard through 1st and second and then nothing in third, I think it may just be because im not keeping it in the peak torque rpm's
thanks alot for the help
I think it just may be the jump between gears, but the car pulls really hard through 1st and second and then nothing in third, I think it may just be because im not keeping it in the peak torque rpm's
thanks alot for the help
10-06-2008, 09:30 PM
#8
5th Gear Member
Join Date: May 2006
Location: Tennessee
Posts: 4,182
lol!
Drive my car. It pulls in every gear. It had a little more in the tank at 150+mph the other day... On a desolate private road
Drive my car. It pulls in every gear. It had a little more in the tank at 150+mph the other day... On a desolate private road
10-06-2008, 09:37 PM
#10
5th Gear Member
Join Date: May 2006
Location: Tennessee
Posts: 4,182
So you are non-intercooled running 11psi? hmmm, I don't know of many tuners that would roll with that. Post pics of your setup if you don't mind....
Hey guys, Young mustang user ( Still learning )
I have compared my car to other cars with around the same ET's that i run, and my car through first and second or from a dig, my car blows them out and its not really close at all, but say we start in 3rd, from a roll, they pull on me, noticeably and even just with driving the car just seems to fall on its face once i hit 3rd. Any ideas?
Things to consider:
4.10 gears
Vortech blower ( non intercooled )
LT headers
*Exhaust system that does a U-turn for side exhaust.
20' carrol shelby wheels
car weighs almost 4000 pounds with me in it
Im thinking the exhaust might be one of the bigger problems, i dont think its just the gearing..
Help appruciated! Thanks guys.
I have compared my car to other cars with around the same ET's that i run, and my car through first and second or from a dig, my car blows them out and its not really close at all, but say we start in 3rd, from a roll, they pull on me, noticeably and even just with driving the car just seems to fall on its face once i hit 3rd. Any ideas?
Things to consider:
4.10 gears
Vortech blower ( non intercooled )
LT headers
*Exhaust system that does a U-turn for side exhaust.
20' carrol shelby wheels
car weighs almost 4000 pounds with me in it
Im thinking the exhaust might be one of the bigger problems, i dont think its just the gearing..
Help appruciated! Thanks guys.