700 r4 speedo question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Frankd · 12-09-2003, 11:05 AM

I have a 89 700r4 out of a 89 S-1o want to put it in my 72, the problem is the speerometer - the s-19 had an electric speedo, does any one know what I have to do to have a speedo? The truck won't be doing any hauling - just a crisier ( my 81 c=30 is the hauleer)

srhart71 · 12-09-2003, 11:56 AM

There is a GM tailhousing that is for the 700R4 that is for a mechanical speedometer. Talk to the parts guy at the local dealer. He should know the number. I believe it was for the 87 pickups.

ckhd · 12-09-2003, 12:37 PM

Call Bowtie Overdrives. www.700r4.com. They have what you need.

tom hand · 12-09-2003, 02:41 PM

Here you go:

http://www.atrol.com/cx_era.htm

Project1970 · 12-09-2003, 05:33 PM

You don't need to buy -any- special parts - you can swap from electric to mechanical by just buying the necessary parts for the mechanical speedo. You'll need the drive gear, the clip that holds it in, the driven gear, the sleeve (depends on your driven gear which one you use, there's two), and the seals for the sleeve.

That, and a speedo cable long enough to reach.

No need to buy a different tailhousing.

Edit: $500+ for that black box?!?

The parts I mentioned shouldn't run over $100, and that's at full dealer retail! The sleeve is the priciest bit, and that's $60 new/retail...you can get it cheaper at some dealers, or yank it from a junkyard.

dmec · 12-10-2003, 04:17 AM

hope you are not putting s10 tranny behind a v8. 6 cyl trannys have fewer clutches than v8. can be converted but has to be torn down and v8 parts installed.

Frankd · 12-10-2003, 10:03 AM

it's going behind a 305, I had it in my s-10, it handled it well.

12-09-2003, 11:05 AM	#1
Frankd Registered User Join Date: Nov 2003 Location: Mauk, Ga Posts: 76	700 r4 speedo question I have a 89 700r4 out of a 89 S-1o want to put it in my 72, the problem is the speerometer - the s-19 had an electric speedo, does any one know what I have to do to have a speedo? The truck won't be doing any hauling - just a crisier ( my 81 c=30 is the hauleer) __________________ 72 c-10 81 c-30 67 c-10 just sittin in the woods) 70 C-10 " " " " to compleete frames 67, 70 - in woods 2002 toyota tundra. 12 yr old son has , 72 Charger, 78 Ramcharger and 85 ford wrecker

12-09-2003, 12:37 PM	#3
ckhd Registered User Join Date: Oct 2000 Location: St. Johns, Arizona Posts: 2,660	Call Bowtie Overdrives. www.700r4.com. They have what you need. __________________ my 2¢ - t.i.o.l.i. Bowen 1968 K20 fleet 1969 K10 swb fleet 1972 K10 Suburban 1972 C10 lwb step 1992 K1500 'burb 1995 K2500 'burb 1997 C1500 'burb 1999 K1500 2000 K1500 'burb Why do I own so many Suburbans?

12-09-2003, 02:41 PM	#4
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	Here you go: http://www.atrol.com/cx_era.htm __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

12-09-2003, 05:33 PM	#5
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	You don't need to buy -any- special parts - you can swap from electric to mechanical by just buying the necessary parts for the mechanical speedo. You'll need the drive gear, the clip that holds it in, the driven gear, the sleeve (depends on your driven gear which one you use, there's two), and the seals for the sleeve. That, and a speedo cable long enough to reach. No need to buy a different tailhousing. Edit: $500+ for that black box?!? The parts I mentioned shouldn't run over $100, and that's at full dealer retail! The sleeve is the priciest bit, and that's $60 new/retail...you can get it cheaper at some dealers, or yank it from a junkyard. __________________ Project1970 - LS1 Swap Complete!

12-10-2003, 10:03 AM	#7
Frankd Registered User Join Date: Nov 2003 Location: Mauk, Ga Posts: 76	it's going behind a 305, I had it in my s-10, it handled it well. __________________ 72 c-10 81 c-30 67 c-10 just sittin in the woods) 70 C-10 " " " " to compleete frames 67, 70 - in woods 2002 toyota tundra. 12 yr old son has , 72 Charger, 78 Ramcharger and 85 ford wrecker

12-09-2003, 11:56 AM	#2
srhart71 Registered User Join Date: Jul 2002 Location: China Grove, NC Posts: 147	There is a GM tailhousing that is for the 700R4 that is for a mechanical speedometer. Talk to the parts guy at the local dealer. He should know the number. I believe it was for the 87 pickups.

12-10-2003, 04:17 AM	#6
dmec Senior Member Join Date: Jun 2000 Location: yucaipa ca Posts: 580	hope you are not putting s10 tranny behind a v8. 6 cyl trannys have fewer clutches than v8. can be converted but has to be torn down and v8 parts installed.



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