View Full Version : Max speed achieved in first gear.

12-04-2004, 09:45 AM

How fast can you get up to while still in first gear?
I'm around 100 km/h(60mp/h). Is it a 2.73 rear gear or numerically smaller?
I want to upgrade the rear gears. The mechanic said : 3.27 or 3.45 will be OK for my engine.
I'm afraid of the 3.45 because I run often around 100 km/h (60 mp/h)
How high the motor will rev?
I've got a C4 with 2.46, 1.46, 1.00.
And the mechanic said I also have to invest in a 2200-2400rpm torque converter.

P.S.: I need a new starter motor, can I use a starter from a 302 Ford engine?

'84 Cougar 3.8 V6

12-04-2004, 10:30 AM
As far as I can remember, when i had my mustang, with T5 and 3.73 I was hitting the yellow @ 60Km/h....

3.55 is good also with automatic... it will give you a way better launch than 2.73 while still drivable on Highway...

12-04-2004, 09:38 PM
I have 3.45's on my '88 w/302 & AOD. It runs around 2700-2800rpm at 60mph in 3rd gear with 225/70-15 tires. My motor seems happy at that speed, and I don't use overdrive at less than 60-65mph unless I'm on an open highway.

12-05-2004, 07:25 AM
How fast can you get up to while still in first gear?
I'm around 100 km/h(60mp/h).

Why are you going 60mph in 1st gear? :dunno:

12-05-2004, 02:01 PM
yeah i was thinking the same, I can get to about 30 in first, 60 in second...

12-06-2004, 02:09 AM
I can hit 62@6k in first gear and thats with the shifter in drive. I think I'm going to use my tv cable as a noose to hang myself with. :dunno:

12-06-2004, 03:16 AM
haha, yeah that's not natural

12-06-2004, 10:18 AM
48 in first 76 in second here.....