Couple of 700r4 questions. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tdave00 · 11-04-2009, 02:03 AM

Ok. I got a 700r4 off craigslist a while back. It came out of a 1989 Firebird. I was told that I needed to get a tailhousing off something like a Caprice. My trans is setup for an electronic speedo. I don't really care about switching it to a manual speedo because I don't have any intention of using the stock guages, so would there be any reason that I would need to swap the tailhousing?

67ChevyRedneck · 11-04-2009, 02:47 AM

My 700R came out of an 83 firebird. I used the 'bird tailhouseing and mount, but when I installed the crossmember, I could only use 2 of the 4 bolts, and had to drill 2 new holes, one on each side. I used the stock V-8 mount locations for my 350, and that's just where it ended up. I also had to shorten my driveshaft.

tdave00 · 11-04-2009, 04:20 AM

Does your 83 700r4 have a manual speedo?

I am trying to figure out if I need to change the tailhousing or not since I don't really care about sticking with the stock speedo guage.

67ChevyRedneck · 11-04-2009, 08:58 AM

Yes, it is mechanical.

No, you don't have to change out the tailhousing.

*If* you wanted to swap it out, again, you don't have to change the tailshaft, but you do have to take it off to access the little plastic gear inside, and you will need to replace the gear unit thats C clipped on the side of the trans:

http://67-72chevytrucks.com/vboard/s...ighlight=700R4

http://67-72chevytrucks.com/vboard/s...ht=speedo+gear

11-04-2009, 02:03 AM	#1
tdave00 Restoring a 68 SWB Join Date: Jan 2008 Location: Nashville, TN Posts: 1,068	Couple of 700r4 questions. Ok. I got a 700r4 off craigslist a while back. It came out of a 1989 Firebird. I was told that I needed to get a tailhousing off something like a Caprice. My trans is setup for an electronic speedo. I don't really care about switching it to a manual speedo because I don't have any intention of using the stock guages, so would there be any reason that I would need to swap the tailhousing? __________________ My Build Thread: Lucy - My 1968 SWB - Shop Truck Style North Nashville Concrete Contractor

11-04-2009, 02:47 AM	#2
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Couple of 700r4 questions. My 700R came out of an 83 firebird. I used the 'bird tailhouseing and mount, but when I installed the crossmember, I could only use 2 of the 4 bolts, and had to drill 2 new holes, one on each side. I used the stock V-8 mount locations for my 350, and that's just where it ended up. I also had to shorten my driveshaft. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 11-04-2009 at 02:47 AM.

11-04-2009, 04:20 AM	#3
tdave00 Restoring a 68 SWB Join Date: Jan 2008 Location: Nashville, TN Posts: 1,068	Re: Couple of 700r4 questions. Does your 83 700r4 have a manual speedo? I am trying to figure out if I need to change the tailhousing or not since I don't really care about sticking with the stock speedo guage. __________________ My Build Thread: Lucy - My 1968 SWB - Shop Truck Style North Nashville Concrete Contractor Last edited by tdave00; 11-04-2009 at 04:24 AM.

11-04-2009, 08:58 AM	#4
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Couple of 700r4 questions. Yes, it is mechanical. No, you don't have to change out the tailhousing. If you wanted to swap it out, again, you don't have to change the tailshaft, but you do have to take it off to access the little plastic gear inside, and you will need to replace the gear unit thats C clipped on the side of the trans: http://67-72chevytrucks.com/vboard/s...ighlight=700R4 http://67-72chevytrucks.com/vboard/s...ht=speedo+gear __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 11-04-2009 at 09:01 AM.

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