by kykayaker274ey1 Wed Jan 27, 2010 5:44 pmwill my van be interstate worthy has a slant 6 with a 3 on the tree going about 70ish for about 150 miles one way ty,,dave
+3
SnarkyPoet
donivan65
kykayaker274ey1
7 posters
a100 van question
kykayaker274ey1- Number of posts : 6
Location : ky
Registration date : 2010-01-27
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
One question is, what is the rear end gear ratio???? Does the Van like going 70 mph????
kykayaker274ey1- Number of posts : 6
Location : ky
Registration date : 2010-01-27
how do i chek anddont know yet if it likes 70 havnt got it on road yet was dads b4 he passed took me 15 years to find and get it bak dad never hit interstate didnt need to ty,,dave
SnarkyPoet- Number of posts : 174
Location : Francestown, NH, USA
Registration date : 2009-12-22
Using the formula (0.00595) * (RPM * r) / (R1 * R2) = MPH,
where the loaded tire radius is 14in (~15in wheel + rubber) and R1 assumes a manual 3spd in 3rd gear (1:1) and R2 assumes a rear diff ratio of 3.55,
achieving a speed of 70mph would require 3000rpm sustained.
You could do it, but unless your engine is healthy you're probably pushing it.
Also, if your rear diff is a 3.96, your rpms will jump to ~3333. If you also have 14in wheels, it jumps all the way up to 3600 rpms. Ouch.
where the loaded tire radius is 14in (~15in wheel + rubber) and R1 assumes a manual 3spd in 3rd gear (1:1) and R2 assumes a rear diff ratio of 3.55,
achieving a speed of 70mph would require 3000rpm sustained.
You could do it, but unless your engine is healthy you're probably pushing it.
Also, if your rear diff is a 3.96, your rpms will jump to ~3333. If you also have 14in wheels, it jumps all the way up to 3600 rpms. Ouch.
donivan65- Governor
- Number of posts : 12220
Location : San Diego, California
Registration date : 2008-05-12
The Van could be set up for hauling or cruising,,,,,It may not even be able to go 70mph, so you need to see how it acts. The cooling system will probably be the critical item,,,,,you need a good radiator with good belts and hoses. You never know what will go wrong on a long trip,,,,,,gas leaks and wiring problems could catch the van on fire,,,,,bearings give up,,,,,,,,stuff comes loose and falls off,,,,,,,thats why you need to know what you got if you plan on owning an Early Van. I think a couple of fire extinguishers would be my favorite tool to carry,,,,,
kykayaker274ey1- Number of posts : 6
Location : ky
Registration date : 2010-01-27
ty you all got alot to do to it first ill let u all know will be quite a while if i cant hit interstate wont get drove much 
G-Man- Mayor
- Number of posts : 30743
Location : Fowlerville, MI
Age : 62
Registration date : 2008-05-06
Know one is saying it can't go on the highway, to make it really dependable you need to go threw the major systems in it. Remember everything there is 40 plus year old. May need updating , cleaned out , replaced to make it a go anywhere van
kykayaker274ey1- Number of posts : 6
Location : ky
Registration date : 2010-01-27
that sounds hopeful im gonna go through the whole thing and carry as mny spare parts as i can ty dave
dix- Moderator 1st Class
- Number of posts : 8729
Location : pittsburgh pa
Age : 66
Registration date : 2008-05-29
YOU MIGHT WANT TO CONSIDER (55) MPH
kiwimopar- Number of posts : 740
Location : New Zealand
Registration date : 2010-01-23
dix wrote:YOU MIGHT WANT TO CONSIDER (55) MPH
I'll bet the Troopers will be.....
G-Man- Mayor
- Number of posts : 30743
Location : Fowlerville, MI
Age : 62
Registration date : 2008-05-06
Last ticket I got was in KY
wideload- Moderator 1st Class
- Number of posts : 1388
Location : Kevil, Kentucky
Age : 70
Registration date : 2008-05-11
Kykyaker what part of Ky are you in?
_________________
Mike
WIDELOAD
https://vintage-vans.smugmug.com/Chevy-GMC-Vans/Wideloads-65-66-67-68/i-CK5s29s
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