Do i have 4.10's?
03-22-2008, 02:39 AM
#11
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Location: CA
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03-22-2008, 08:53 AM
#13
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Join Date: Feb 2008
Location: Greenlane, Pa.
Posts: 2,801
RE: Do i have 4.10's?
What gear ratio do I have?
Jack up one tire if you have an open diff, or both tires if you have a working posi or locking differential. Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 ¾ turns, you probably have a 3.73 gear ratio. Turning the tire for twice the number of full revolutions and dividing the drive shaft revolutions by two will give you a more accurate reading.
Jack up one tire if you have an open diff, or both tires if you have a working posi or locking differential. Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 ¾ turns, you probably have a 3.73 gear ratio. Turning the tire for twice the number of full revolutions and dividing the drive shaft revolutions by two will give you a more accurate reading.
03-22-2008, 10:03 AM
#14
3rd Gear Member
Thread Starter
Join Date: Nov 2007
Location:
Posts: 548
RE: Do i have 4.10's?
i figured it out for sure. its 3.73. it cant be stock because stock you will get to 60mph at the very end of second gear. my second will only take me to 50mph. also, one number that i know for sure is when im going 40 in 4th gear its at 2000rpm, and according to the chart, thats 3.73's.
03-22-2008, 09:12 PM
#15
2nd Gear Member
Join Date: Dec 2007
Posts: 390
RE: Do i have 4.10's?
ORIGINAL: Obsequious1
What gear ratio do I have?
Jack up one tire if you have an open diff, or both tires if you have a working posi or locking differential. Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 ¾ turns, you probably have a 3.73 gear ratio. Turning the tire for twice the number of full revolutions and dividing the drive shaft revolutions by two will give you a more accurate reading.
What gear ratio do I have?
Jack up one tire if you have an open diff, or both tires if you have a working posi or locking differential. Rotate the tire one full revolution for posis and lockers and 2 full revolutions for open diffs. Carefully count the number of full revolutions the driveshaft makes. This is your gear ratio. In other words, if the drive shaft turns 3 ¾ turns, you probably have a 3.73 gear ratio. Turning the tire for twice the number of full revolutions and dividing the drive shaft revolutions by two will give you a more accurate reading.
And it's 3.73's
03-23-2008, 10:55 AM
#17
1st Gear Member
Join Date: Jan 2008
Location:
Posts: 55
RE: Do i have 4.10's?
ORIGINAL: Ehmark
With a t45 and 4.30's I am at exactly 80 at 3000 rpm in 5th 2000 rpms is about 53. What you have sounds like 3.27 in a t45 or your speedo is way off.
With a t45 and 4.30's I am at exactly 80 at 3000 rpm in 5th 2000 rpms is about 53. What you have sounds like 3.27 in a t45 or your speedo is way off.
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