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  • 1965 - 1973 Classic Mustangs -General/Talk-
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Went from 3.70 gears to 3.00...

  • Thread starter Thread starter 65shlbycln
  • Start date Start date Jun 9, 2004
6

65shlbycln

Founding Member
Aug 24, 2002
1,266
0
0
Atlanta
www.osanto.net
Jun 9, 2004
#1
  • Jun 9, 2004
  • #1
Well, i thought i had 3.31ish gears in my car. Turns out i had 3.70. After the 3.00 went in, I noticed 2 things...

1)The car has much less trouble keeping up with traffic. I could probably cruise at 90 no problem now. At speed, while keeping up with traffic (~60-65mph) i went from 3k to less than 2k RPMs.

2)The car is much slower during acceleration. I miss it. It used to pull very hard, and now, its nothing special at all. I definitely wont be racing anyone now. If only I could have had the acceleration and lower rpms at the same time...

i dont have the time now to go to an overdrive tranny, so the toploader stays.

Overall, i'm still satisfied, because my gas bill will be much lower, and I can actually drive in the left lane now and drive WITH traffic.

But yeah, gears really really make a difference as far as acceleration goes.

I'll end up being happy with the swap during the week when i go to work; its the cruising around on the weekends when i'll be sad i did the swap.

No more fast fastback

 

Max Power

Active Member
Jul 31, 2003
1,774
1
36
64
St Paul
Jun 9, 2004
#2
  • Jun 9, 2004
  • #2
There's the rub.
 

ratio411

Founding Member
Apr 21, 2002
3,870
73
109
Pensacola FL
Jun 9, 2004
#3
  • Jun 9, 2004
  • #3
A wide ratio toploader will help some.
It will get your final drive ratio in low gear back where it was.
I have talked to alot of old timers in the toploader business and they all say that the wide ratio is the only way to go on the street.

Wide ratio/3.00 in first gear- 8.34
Close ratio/3.70 in first gear- 8.58 (what you had)
Close ratio/3.00 in first gear- 6.96 (what you have)
 

65fastback2+2

New Member
Aug 4, 2003
1,229
0
0
Louisville, KY
www.hotdub.com
Jun 9, 2004
#4
  • Jun 9, 2004
  • #4
heh, you think thats bad, try going from a 4.11 spool to a 3.00 open hahaha, talk about being upset at acceleration. course now my top speed is above 75 lol, but still, it could take anything to 70 before, and now, i cant even take a stock chevy 1500 to 60 =/ Im doing an AOD in a month or so, but im still keeping the 3.00's, should get SWEEEET gas mileage im hoping for 26+ by the time im done (headers, 4bbl, AOD, etc)
 

BAD67FUN

Founding Member
Oct 31, 2001
589
0
0
Wisconsin
Jun 9, 2004
#5
  • Jun 9, 2004
  • #5
I must say... it sure is a sad time when we have to be concerned with gas mileage on our little hot rods. I'm just fortunate my stang doesn't need to be a daily driver. Dang gas prices!!
 

blown65

Founding Member
Jul 7, 1999
1,938
4
39
53
Queen Creek Arizona
streetfire.net
Jun 9, 2004
#6
  • Jun 9, 2004
  • #6
bleh, you should be glad you dont get my gas mileage. I dont think gears are going to help me out in that dept much.
 

65fastback2+2

New Member
Aug 4, 2003
1,229
0
0
Louisville, KY
www.hotdub.com
Jun 9, 2004
#7
  • Jun 9, 2004
  • #7
blown65 said:
bleh, you should be glad you dont get my gas mileage. I dont think gears are going to help me out in that dept much.
Click to expand...

with the 4.11's i was getting 6mpg
 

Great68

Founding Member
May 16, 2002
691
0
16
Victoria BC
Jun 10, 2004
#8
  • Jun 10, 2004
  • #8
I think i'm happier with getting rid of the 3.40's I used to have. Cruising around on the highway at 3000 rpm sucks. When I went to 3.40's I used to think "I don't drive on the highway much". Then I realized that highway driving is 75% of what I do haha.

I have my old 2.80's back in now, with a spare set of 3.00's.

Bottom end isn't so bad anymore, the head swap more than makes up for the lack of low end power (when I have it running haha)
 
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