Huck, a solution for you - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stelth2002 · 12-15-2003, 04:17 AM

Huck, i was looking on paces site. heres a speedo conversion that will for you or anyone else for the matter. It takes a electronic signal from your tranny and then runs a speedo cable that will work in our trucks.

stelth2002 · 12-15-2003, 04:18 AM

Forgot the link.... here t is http://www.paceparts.com/product.asp?3=166918

72addict · 12-15-2003, 05:21 AM

I know that the 700r4 trans was made with both mechanical and electronic speedos, so the parts are available for the conversion for the automatic. I have also replaced the speedo gear with a shudder wheel in a np205 tcase swap I did. The inside splines are exactly the same, so it was a dirrect swap. My point is, see if the trans you are running was produced prior to the electronic speedo ('87 and down I think). Even if not, the sensor ring will probably be a dirrect swap with a speedo pickup gear. Then you would need to modify the tailhousing (if it has one) to accept the speedo cable. It helps if you know a machinist for this. It may be cheaper than $280

stelth2002 · 12-15-2003, 05:53 AM

huck is using a nv4500. they dont any provisions for a mechanical hookup. He hasnt been able to find out how to get his speedo to work yet.

72addict · 12-15-2003, 08:03 AM

www.autotransinc.com/ 4l80hous.htm

72addict · 12-15-2003, 08:04 AM

www.autotransinc.com/4l80hous.htm

12-15-2003, 04:17 AM	#1
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	Huck, a solution for you Huck, i was looking on paces site. heres a speedo conversion that will for you or anyone else for the matter. It takes a electronic signal from your tranny and then runs a speedo cable that will work in our trucks. __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

12-15-2003, 04:18 AM	#2
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	Forgot the link.... here t is http://www.paceparts.com/product.asp?3=166918 __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

12-15-2003, 05:21 AM	#3
72addict Registered User Join Date: Mar 2000 Location: Mason MI, 48854 (strikezone of the mitten) Posts: 894	I know that the 700r4 trans was made with both mechanical and electronic speedos, so the parts are available for the conversion for the automatic. I have also replaced the speedo gear with a shudder wheel in a np205 tcase swap I did. The inside splines are exactly the same, so it was a dirrect swap. My point is, see if the trans you are running was produced prior to the electronic speedo ('87 and down I think). Even if not, the sensor ring will probably be a dirrect swap with a speedo pickup gear. Then you would need to modify the tailhousing (if it has one) to accept the speedo cable. It helps if you know a machinist for this. It may be cheaper than $280 __________________ 1957 Cameo

12-15-2003, 05:53 AM	#4
stelth2002 Young Gun wth Fast Inline Join Date: Jan 2002 Location: Idaho Posts: 1,475	huck is using a nv4500. they dont any provisions for a mechanical hookup. He hasnt been able to find out how to get his speedo to work yet. __________________ 1967 Chevrolet LWB with built 292! 415 ft. lbs of torque, 4 speed :O with 27% overdrive too, 3.73 Posi. Frame and body done... getting painted!!!

12-15-2003, 08:03 AM	#5
72addict Registered User Join Date: Mar 2000 Location: Mason MI, 48854 (strikezone of the mitten) Posts: 894	This site shows what I mean www.autotransinc.com/ 4l80hous.htm __________________ 1957 Cameo

12-15-2003, 08:04 AM	#6
72addict Registered User Join Date: Mar 2000 Location: Mason MI, 48854 (strikezone of the mitten) Posts: 894	www.autotransinc.com/4l80hous.htm __________________ 1957 Cameo

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