Performance at highway speeds
Thread Starter
|
Mountain Pass
Joined: Sep 2002
Posts: 181
Likes: 0
From: covington
Performance at highway speeds
I have a 1990 Bronco with a newly rebuilt 351w and stock 31 inch tires. From 0-60 it feels like it has plenty of get up and go. I am very happy with the performance around town. ON the expressway at speeds around 65-75 it cruise just fine on flat ground. As soon as I start going up a decent grade, I have to kick the tranny down into 3rd to maintain 70 mph. Is this normal for a 351w. I know the broncos are heavy, but this seems unusual to me, especially since it accelerates so well at slower speeds. I have had another person who owns a 1996 bronco and he says it feels as fast as his 0-60. He told me he can cruise all day at 80mph with no problem. Thoughts and experience requested.
Senior User
Joined: Jun 2002
Posts: 171
Likes: 0
From: Burlington USA
Performance at highway speeds
We've got a 1990 Bronco with 300 six and five speed. It does the same thing. I think it is the gears. We've got 3.08's, they are good for cruising but not for grunt, but the six tends to make up for it except at speed. Hope this helps
Mountain Pass
Joined: Dec 2002
Posts: 247
Likes: 0
From: Madison/CT
Performance at highway speeds
oh yeah its the gears. I have those wondeful 3.55's and with my 35's they pretty much suck. A whole lot. but, i only have a 302, and it goes pretty good when i put 31' s on it, looks silly though.
I'm thinkin about puttin 4:56's in. Hope you figure it out.
I'm thinkin about puttin 4:56's in. Hope you figure it out.
tr
Senior User
Joined: Aug 2000
Posts: 473
Likes: 1
From: Richmond, CA
Performance at highway speeds
I too have a '90 with the 5.8L(351w) that I just had rebuilt last year. But I have added a mild cam, Edelbrock Intake manifold & throttle body, F & N filter system, MSD coil, and a few others that I'm forgetting.
That happens to me too, but not as often as before the rebuild. Sometimes when I have cruise control set at 75mph and I go up steep grades It'll only drop about 5mph without turning off the overdrive.
Hope this helps
That happens to me too, but not as often as before the rebuild. Sometimes when I have cruise control set at 75mph and I go up steep grades It'll only drop about 5mph without turning off the overdrive.
Hope this helps
