4wd transmission in a 2wd - Competition Diesel.Com

r-rated diesel · 01-03-2016, 02:21 PM

Hey guys I am needing some advice. I am in the middle of building a 2wd shorty 12v drag truck and I have a few questions. I am ditching the 47rh for an all billet manual vb 47re I bought from a buddy. I called around and every transmission shop said stay with the 4wd style billet output shaft. My question is how can I adapt the output to a drive shaft? The shaft is only like 1.5" long. Any help would be appreciated!

Cozze44 · 01-03-2016, 02:28 PM

You could do a bolt on yoke, just have to drill and tap the shaft.

r-rated diesel · 01-03-2016, 03:05 PM

Quote:

Originally Posted by Cozze44

You could do a bolt on yoke, just have to drill and tap the shaft.

That's a good idea. Has anyone put a 4wd style Trans in a 2wd?

*zfaylor* · 01-03-2016, 03:19 PM

In for this. My rh has served me well since I rebuilt it but if I ever lose the output this is the route I would like to go.

YoungDiesel27 · 01-03-2016, 03:30 PM

I believe suncoast makes an adapter for the 4wd to be a slip yoke style.

*JQmile* · 01-03-2016, 05:41 PM

Not cheap if I recall....

Woosley · 01-03-2016, 05:56 PM

Quote:

Originally Posted by JQmile

Not cheap if I recall....

It's diesel related, and being used in a race truck. There is no part of any of this cheap!

r-rated diesel · 01-03-2016, 09:23 PM

Quote:

Originally Posted by Woosley

It's diesel related, and being used in a race truck. There is no part of any of this cheap!

Story of my life.

rockjeep73 · 01-03-2016, 11:48 PM

I think the suncoast setup is around $1500. The output shaft is a 32 spline and uses a turbo 400 slip yoke.

joefarmer · 01-04-2016, 11:15 AM

The Suncoast setup also comes with the machined O/D housing. I'd definitely recommend it. Mine was purchased through Firepunk. FYI, I don't think it's a stocked part so the lead time is a little longer than off-the-shelf.

r-rated diesel · 01-04-2016, 11:51 AM

Is there any other option beside the suncoast $1500 piece? Just kind of sucks since my Trans already has a billet output.

joefarmer · 01-04-2016, 11:59 AM

Quote:

Originally Posted by r-rated diesel

Is there any other option beside the suncoast $1500 piece? Just kind of sucks since my Trans already has a billet output.

Firepunk may be able to give you a partial credit for your billet output?

*Todd W* · 01-05-2016, 01:48 AM

You could also go with a 2wd billet output shaft. We now have one in the Junker Drag Truck and we've built a couple 2wd race transmissions with them, so far we haven't had any billet 2wd output shaft breakage.... The billet 2wd shafts run in the mid $800 range and come with the factory 2wd 30 spline setup not 32 spline like the suncoast units, but they are much longer so they should handle shock loading well since they are like a big long torsion bar/spring. Until we break one, it's hard to say which is stronger, or if it even matters.

CREED1 · 01-05-2016, 03:14 AM

I did a write up a lil over a year ago.. fyI your not buying the suncoast kit for anywhere near $1500 lol.. I had right around $3k after it was all said and done driveshaft and all and im a dealer for them.. Rusty at tcs arizona has since finished his billet 2wd shafts that were not available at that time, however no governor gear so no speedo but you wont have one with the suncoast unit either. Here is a link to the writeup I did with all the part #s you will need if you go the suncoast route.
http://www.competitiondiesel.com/for...d.php?t=165180

*Chris Tobin* · 01-05-2016, 09:26 AM

You guys can run a GPS speedo. There are several made for the boating industry.

r-rated diesel · 01-05-2016, 12:04 PM

Honestly im not really worried about a speedo. I'm just gonna let the time slip tell me my mph haha.

FIRST GEN. JAKE · 02-17-2016, 07:30 PM

Thought you bought one of those conversion kits from blacks? I guess the problem with the 4wd shaft is not having long enough splines to fit a yoke? Curious to see how it all works out.

Sent from my iPhone using Tapatalk

r-rated diesel · 02-17-2016, 09:28 PM

I did buy the suncoast conversion shaft from blacks diesel. It is a really nice piece! It is accepts a th400 slip yoke.

CREED1 · 02-17-2016, 11:30 PM

Quote:

Originally Posted by r-rated diesel

I did buy the suncoast conversion shaft from blacks diesel. It is a really nice piece! It is accepts a th400 slip yoke.

Make sure you order the right yoke from Mark Williams.. Its a roller bearing th400 yoke, not just a standard th400 yoke..

r-rated diesel · 02-18-2016, 07:26 AM

Alright thanks. How do I get ahold of him?

01-03-2016, 02:21 PM	#1
r-rated diesel Name: r-rated diesel Title: Too Much Time Status: Not Here Join Date: Oct 2011 Member`s Gallery Posts: 1,345	4wd transmission in a 2wd Hey guys I am needing some advice. I am in the middle of building a 2wd shorty 12v drag truck and I have a few questions. I am ditching the 47rh for an all billet manual vb 47re I bought from a buddy. I called around and every transmission shop said stay with the 4wd style billet output shaft. My question is how can I adapt the output to a drive shaft? The shaft is only like 1.5" long. Any help would be appreciated!

01-03-2016, 02:28 PM	#2
Cozze44 Name: Cozze44 Title: Junkman Status: Not Here Join Date: Feb 2012 Location: WIND GAP, PA Member`s Gallery Posts: 1,315	You could do a bolt on yoke, just have to drill and tap the shaft. __________________ Frank 03 Subaru Forester - Old man car - 300k - RIP 07 Subaru Forester - Dadmobile - 129k 14 Subaru Legacy Outback - Wifes ride - 70k 02 Dodge 2500 My Build Thread

01-03-2016, 03:19 PM	#4
zfaylor Name: zfaylor Title: Comp Diesel Sponsor Status: Not Here Join Date: Nov 2010 Location: P-TOWN!, Indiana Member`s Gallery Posts: 5,024	In for this. My rh has served me well since I rebuilt it but if I ever lose the output this is the route I would like to go. __________________ 2015 half ton heavy chevy 81 Fairmont LS project Many yard ornament projects... North American Turbo

01-03-2016, 03:30 PM	#5
YoungDiesel27 Name: YoungDiesel27 Title: Never Enough Time Status: Not Here Join Date: Jul 2010 Location: West Virginia Member`s Gallery Posts: 825	I believe suncoast makes an adapter for the 4wd to be a slip yoke style. __________________ EFI Live, HP Tuners, Smarty custom tuning

01-03-2016, 05:41 PM	#6
JQmile Name: JQmile Title: Comp Diesel Sponsor Status: Not Here Join Date: Nov 2006 Member`s Gallery Posts: 6,976	Not cheap if I recall.... __________________ 89 Dodge 972rwhp on the hose, still a VE!

01-03-2016, 11:48 PM	#9
rockjeep73 Name: rockjeep73 Title: Too Much Time Status: Not Here Join Date: Jul 2007 Location: California Member`s Gallery Posts: 1,339	I think the suncoast setup is around $1500. The output shaft is a 32 spline and uses a turbo 400 slip yoke. __________________ SHSDiesel.com

01-04-2016, 11:15 AM	#10
joefarmer Name: joefarmer Title: MR. Supreme Overlord Status: Not Here Join Date: Jul 2006 Location: ohio Member`s Gallery Posts: 6,137	The Suncoast setup also comes with the machined O/D housing. I'd definitely recommend it. Mine was purchased through Firepunk. FYI, I don't think it's a stocked part so the lead time is a little longer than off-the-shelf. __________________ brandon'); DROP TABLE Users;-- 1948 Dodge 1.5t 12v RH swap \| 99 F250 12v RE test rkt \| 11 X5 'no soup' \| 08 F250 CR RE swap \| 05 2500 CR 68 standalone firepunk.com

01-04-2016, 11:51 AM	#11
r-rated diesel Name: r-rated diesel Title: Too Much Time Status: Not Here Join Date: Oct 2011 Member`s Gallery Posts: 1,345	Is there any other option beside the suncoast $1500 piece? Just kind of sucks since my Trans already has a billet output.

01-05-2016, 01:48 AM	#13
Todd W Name: Todd W Title: Comp Diesel Sponsor Status: Not Here Join Date: Nov 2006 Location: southern utah Member`s Gallery Posts: 784	You could also go with a 2wd billet output shaft. We now have one in the Junker Drag Truck and we've built a couple 2wd race transmissions with them, so far we haven't had any billet 2wd output shaft breakage.... The billet 2wd shafts run in the mid $800 range and come with the factory 2wd 30 spline setup not 32 spline like the suncoast units, but they are much longer so they should handle shock loading well since they are like a big long torsion bar/spring. Until we break one, it's hard to say which is stronger, or if it even matters. __________________ 1999 ram 2000 12V best E.T. 10.24 best mph 133 Formerly known as gs1000 Last edited by Todd W; 01-05-2016 at 01:49 AM.

01-05-2016, 03:14 AM	#14
CREED1 Name: CREED1 Title: Throwed Off Status: Not Here Join Date: Jul 2007 Location: Cleveland, Tx Member`s Gallery Posts: 2,880	I did a write up a lil over a year ago.. fyI your not buying the suncoast kit for anywhere near $1500 lol.. I had right around $3k after it was all said and done driveshaft and all and im a dealer for them.. Rusty at tcs arizona has since finished his billet 2wd shafts that were not available at that time, however no governor gear so no speedo but you wont have one with the suncoast unit either. Here is a link to the writeup I did with all the part #s you will need if you go the suncoast route. http://www.competitiondiesel.com/for...d.php?t=165180

01-05-2016, 09:26 AM	#15
Chris Tobin Name: Chris Tobin Title: Too Much Time Status: Not Here Join Date: Jun 2008 Location: Dayton, TN Member`s Gallery Posts: 2,662	You guys can run a GPS speedo. There are several made for the boating industry. __________________ Chris Tobin Editor--Ultimate Diesel Builder's Guide Freelance Editor and Photographer Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines tobinemail@aol.com I might be able to help get you in a mag. Custom poster size photos available. PM or email for info.

01-05-2016, 12:04 PM	#16
r-rated diesel Name: r-rated diesel Title: Too Much Time Status: Not Here Join Date: Oct 2011 Member`s Gallery Posts: 1,345	Honestly im not really worried about a speedo. I'm just gonna let the time slip tell me my mph haha.

02-17-2016, 07:30 PM	#17
FIRST GEN. JAKE Name: FIRST GEN. JAKE Title: Too Much Time Status: Not Here Join Date: Oct 2010 Location: Olaton, Ky Member`s Gallery Posts: 930	Thought you bought one of those conversion kits from blacks? I guess the problem with the 4wd shaft is not having long enough splines to fit a yoke? Curious to see how it all works out. Sent from my iPhone using Tapatalk __________________ 93 P pumped 06

02-17-2016, 09:28 PM	#18
r-rated diesel Name: r-rated diesel Title: Too Much Time Status: Not Here Join Date: Oct 2011 Member`s Gallery Posts: 1,345	I did buy the suncoast conversion shaft from blacks diesel. It is a really nice piece! It is accepts a th400 slip yoke. Last edited by r-rated diesel; 02-17-2016 at 09:29 PM.

02-18-2016, 07:26 AM	#20
r-rated diesel Name: r-rated diesel Title: Too Much Time Status: Not Here Join Date: Oct 2011 Member`s Gallery Posts: 1,345	Alright thanks. How do I get ahold of him?