The Stovebolt.com Forums Home | Tech Tips | Gallery | FAQ | Events | Features | Search
Help is a click away!

VEHICLE
INFORMATION
KITS


at the

GM Heritage Center
All the details are here.

Searching the Site - a click away
click here to search
New here ??? Where to start?
Click on image for the lowdown. Where do I go around here?
====
Who's Online Now
9 members (Wally / Montana, UtahYork, Frank50, BarryP, BC59, cmayna, DadsFirstPickup, Gray_Ghost, 1 invisible), 125 guests, and 2 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums66
Topics128,134
Posts1,056,740
Members48,454
Most Online14,466
Apr 26th, 2026
Step-by-step instructions for pictures in the forums
Brad Allen's photos

AD Chevy Trucks

Pictures galore
Over 6,000 pictures

Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips.

Check them out!

Lots of work on Brad's part ... pure enjoyment (and references) for you!

Big Thanks!

THANKS!

For helping keep this great
old truck web site
on the Internet for

over 30 years!

and not clogged down
with Ads!


Again, thanks!

Previous Thread
Next Thread
Print Thread
Joined: Apr 2004
Posts: 29
1
New Guy
New Guy
1 Offline
Joined: Apr 2004
Posts: 29
Bolter's
I own a White 2000(photo in the alternate gallery)and need some advice.It currently runs a 6-130A engine rated at 130 HP.It's mated to a Clark 205V 5 sp. direct and a Timken H-140 single sp 16,000 GVW rearend with a 6.17 ratio.I'm looking for a little better road speed than the screamin 45-50 mph I get now.
First off,I have aquired a 6-200A engine rated at 200 HP.This engine is a Reo engine as is the 6-130A.Same block but an overall better and more modern engine.So, my question is would a Clark OD tranny be my answer or would an aux be better?Also,I would love a 2 sp rear.The option was available with the Timkin H-340 with the same slow 6.17 ratio in high.Should I look for a later rear with a higher ratio?

THANKS!!

Joined: May 2005
Posts: 8,878
G
.
.
G Offline
Joined: May 2005
Posts: 8,878
A faster ratio rear axle would be a good start, probably simplest and cheapest option.
The OD Clark transmissions are not easy to get parts for now, some parts not available new, I would stay away from those unless you find a good one at a great price.
What type of clutch housing/bell housing do you have? is it a round SAE style? If so then you can choose from a number of more modern OD transmissions.

Grigg


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Joined: Apr 2004
Posts: 29
1
New Guy
New Guy
1 Offline
Joined: Apr 2004
Posts: 29
Grigg,
Yes the White has a SAE #2 or 3,not sure which.Can you give me some examples of what transmissions would be good choices?I would like to have the truck (and me) comfortable at 55mph>
Would you know what specific rear axle I should be on the lookout for?Wish I could go the diesel route like your rig.I just don't have that kind of talent.

Ron

Joined: May 2005
Posts: 8,878
G
.
.
G Offline
Joined: May 2005
Posts: 8,878
Hi Ron,
I don't know what exact rear axle to look for, but I would start by looking for just the center section with faster gears, keep your housing under the truck. Call a bunch of old truck junk yards, someone will either have one, or know enough to tell you you're on a wild goose chase.

calculate speeds here:
http://www.onlineconversion.com/bigger_tires.htm
I like the last on the page, and just guessing at your info looks like a 5.something rear axle would solve the problem.

Then if you want an OD to either go with or in place of an axle swap I would consider these models:

Spicer 3053A 5 speed with most commonly a 0.85 OD ratio as found behind many Multi-fuel engines in Deuce and a half military trucks. This is probably the cheapest and easy to find OD 5 speed, and plenty strong. It's overdrive, but not a very aggressive one. They come with an SAE #3 clutch housing, and a #3 to #2 adapter ring as well.

Fuller FSO-6406a and a FSO-8406a, both 6 speed overdrives with 0.78 ratio, but perhaps still on the large side, about 359 lb dry, they are single countershaft transmissions. Can be found in some medium duty trucks, reasonably new ones. These are pretty expensive and difficult to find used, but every now and then I hear about someone buying one for next to nothing, so worth looking for. Usually have SAE#2 housings, not sure if #3 was an option?

If you want more gears, and don't care for a two speed rear then think about a little Roadranger, both 9, 10, and 13 speeds, in overdrive and direct drive, probably in about this order of desirability:
RTO-6610
RTO-610
RTO-6613
RTO-613
RT-6610
RT-6609A
RT-610
RT-8609
RT-6613
The RTO stands for overdrive, and ratio on these models is 0.80.
The 9 and 10 speeds weigh about 425 lb installed and with oil, add 200 lb for the 13 speed (13 speed probably not a good option for your truck). Come with #2 clutch housings, don't think I've seen a #3.
These transmissions can be expensive for an OD, but deals are out there. The direct drive ones can be pretty easily found for much less money, often cheap enough to buy an OD gear parts kit and upgrade (but not available for the 9 speed).

Find out what SAE housing you have:
http://www.foleyengines.com/FreeTechnicalInfo/DrDieselShopKinks/SAEBellHousings.aspx

That'll get you thinking,
Grigg

Last edited by Grigg; 12/28/2008 3:56 PM.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-

Moderated by  69Cuda, Super55 

Link Copied to Clipboard
Home | FAQ | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 8.0.0