Anyone know my T5 ratios?
Thread Starter
Supreme Member
Joined: Jan 2001
Posts: 1,108
Likes: 0
From: Kalamazoo,Mi,USA
Car: 84 Z28
Engine: L69: cam and porting
Transmission: T5, 3.73 rear
Anyone know my T5 ratios?
i have an 84 L69 Z with the original T5. I need the fifth gear ratio for top speed calculations.
thanks much!
thanks much!
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
It could be .73 or .65, either one... 
With 3.45 gears and the .65 overdrive, I'm at 2000 RPMs at 70 MPH, to give you an idea.
------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
With 3.45 gears and the .65 overdrive, I'm at 2000 RPMs at 70 MPH, to give you an idea.------------------
West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
Most likely it's the .73.
Drive down the road at exactly 60 mph or whatever in 4th, and note the RPM; shift into 5th, and again note the RPM; 5th divided by 4th = the ratio.
BTW mine did somewhere around 130 when it was stock. It was right at 5000 in 5th.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
[This message has been edited by RB83L69 (edited January 26, 2001).]
Drive down the road at exactly 60 mph or whatever in 4th, and note the RPM; shift into 5th, and again note the RPM; 5th divided by 4th = the ratio.
BTW mine did somewhere around 130 when it was stock. It was right at 5000 in 5th.
------------------
"So many Mustangs, so little time..."
ICON Motorsports
[This message has been edited by RB83L69 (edited January 26, 2001).]
Thread Starter
Supreme Member
Joined: Jan 2001
Posts: 1,108
Likes: 0
From: Kalamazoo,Mi,USA
Car: 84 Z28
Engine: L69: cam and porting
Transmission: T5, 3.73 rear
Thanx for the info guys, by the way, my speedo is inop so I ahve just been guessing the speed at which I have been traveling.
This is a GREAT site!!!
This is a GREAT site!!!
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