You know we need to see some pics.
First time 1970 owner
Thread Starter
Heel & Toe
Joined: Jun 2009
Posts: 20
Likes: 0
First time 1970 owner
I just bot the 1970 convertible. Was amazed at the 3" clearance where the exhaust passes under the rear axle. I hear a knocking in that area when i add or decrease presure on the accelerator when driving it. Wonder what that is? Also wonder why the vacuum system raises the headlights, most of the time but not the wiper door? The previous owner also put in a 2-way switch next to the original wiper switch for hi and lo speed wiping-why not just fix the original switch? It looks like a minor rehab for the car all around since it has been sitting for a while but runs. Any thoughts for a first time owner on any of this as well as a good mechanic here in the FtWorth area? Best place to go to for parts like radio, antenna/motor, switches, spare tire, touch up paint, etc.? Looking forward to this new 'labor of love'
Ken
Ken
Burning Brakes
Joined: May 2008
Posts: 1,165
Likes: 24
From: Boston MA
Welcome Ken,
Vacuum problems are just a matter of troubleshooting. You can visit the wilcox website for tips, or buy the system diagram and guide from doc rebuild.
Sounds like bubba got to the wiper switch...hopefully its just a new switch to fix it.
1970 did not have a power antenna.
Original radio or aftermarket?
most of the vendors on the left side of the page have everything you need.
Touch up paint is probably not a good idea...if the paint is original its faded, if it has been resprayed you dont know the exact color, is it basecoat/clearcoat?
Post pictures.
Vacuum problems are just a matter of troubleshooting. You can visit the wilcox website for tips, or buy the system diagram and guide from doc rebuild.
Sounds like bubba got to the wiper switch...hopefully its just a new switch to fix it.
1970 did not have a power antenna.
Original radio or aftermarket?
most of the vendors on the left side of the page have everything you need.
Touch up paint is probably not a good idea...if the paint is original its faded, if it has been resprayed you dont know the exact color, is it basecoat/clearcoat?
Post pictures.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
364946,
I'm partial to 70's! The second Corvette I owned was and still is a 70!
I can help you on the wiper and vacuum problems but you'll need to inspect the help and repair pages on this system and then post what you see.
On the exhaust, is there a bracket on the back of the tranny? There should be one and this is what keeps the system centered on the car. It also will keep you from a hitting the crossmember when you hit the throttle.
You don't need to buy the diagram, I should have one on the site and if not I can post one for you. Start with these:
http://willcoxcorvette.com/repairand...lp.php?hID=218
http://willcoxcorvette.com/repairand...elp.php?hID=95
I'll be out of town and won't be online as often starting tomorrow. But Dwnnchs is very smart with the vacuum system and the wiper schematic I posted. I'm sure between him and me checking back in a few days we can get you going.
Willcox Inc.
I'm partial to 70's! The second Corvette I owned was and still is a 70!
I can help you on the wiper and vacuum problems but you'll need to inspect the help and repair pages on this system and then post what you see.
On the exhaust, is there a bracket on the back of the tranny? There should be one and this is what keeps the system centered on the car. It also will keep you from a hitting the crossmember when you hit the throttle.
You don't need to buy the diagram, I should have one on the site and if not I can post one for you. Start with these:
http://willcoxcorvette.com/repairand...lp.php?hID=218
http://willcoxcorvette.com/repairand...elp.php?hID=95
I'll be out of town and won't be online as often starting tomorrow. But Dwnnchs is very smart with the vacuum system and the wiper schematic I posted. I'm sure between him and me checking back in a few days we can get you going.
Willcox Inc.
Instructor
Joined: Jan 2009
Posts: 103
Likes: 0
From: Miami FL
Just got my '70 vert in March and love it. Could you do me a favor and take some pics from the back under the car? I would like to see how low your exhaust is, mine seems very low, I scrape the road if I take a bump or dip too fast.
Pro
Joined: Nov 2007
Posts: 710
Likes: 0
From: Northern Florida
I just bot the 1970 convertible. Was amazed at the 3" clearance where the exhaust passes under the rear axle. I hear a knocking in that area when i add or decrease presure on the accelerator when driving it. Wonder what that is? Also wonder why the vacuum system raises the headlights, most of the time but not the wiper door? The previous owner also put in a 2-way switch next to the original wiper switch for hi and lo speed wiping-why not just fix the original switch? It looks like a minor rehab for the car all around since it has been sitting for a while but runs. Any thoughts for a first time owner on any of this as well as a good mechanic here in the FtWorth area? Best place to go to for parts like radio, antenna/motor, switches, spare tire, touch up paint, etc.? Looking forward to this new 'labor of love'
Ken
Ken
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Race Director
Joined: Nov 2002
Posts: 10,489
Likes: 576
From: Pace Florida
St. Jude Donor '05-'06-'07-'08-'09-'10-'11
National Champs Gators 4 St. Jude '09
Safety Car
Joined: Apr 2000
Posts: 3,802
Likes: 61
From: Wichita KS
RE: knocking when accelerating, I had a lot of trouble getting my right side exhaust pipe placed so that it would not hit one of the spring mounting bolts.
You didn't say whether this was a small block or big block but there are 2 sizes of exhaust pipes, 2" and 2.5". Obviously the 2.5" pipes ride a little closer to the spring so you have to work with the bends in both the pipe and the muffler to get them both placed just right.
cc
BTW welcome to the family.
You didn't say whether this was a small block or big block but there are 2 sizes of exhaust pipes, 2" and 2.5". Obviously the 2.5" pipes ride a little closer to the spring so you have to work with the bends in both the pipe and the muffler to get them both placed just right.
cc
BTW welcome to the family.
Race Director
Joined: Jan 2001
Posts: 16,221
Likes: 118
From: Matthews NC
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
Welcome from yet another 70 owner! You'll love it!
Good advice above. That exhaust bracket that bolts to the rear of the tranny is missing on mine, bought one and need to install, and the exhaust does at times bump the underside making a clunking sound.
Get the AIM-Assembly Instruction Manual and the chassis repair manuals for the 70. Worth their weight in gold. The AIM was used by the assembly line workers.
Post some pics!
Good luck with it!
Glenn
Good advice above. That exhaust bracket that bolts to the rear of the tranny is missing on mine, bought one and need to install, and the exhaust does at times bump the underside making a clunking sound.
Get the AIM-Assembly Instruction Manual and the chassis repair manuals for the 70. Worth their weight in gold. The AIM was used by the assembly line workers.
Post some pics!
Good luck with it!
Glenn
Pro
Joined: Nov 2007
Posts: 710
Likes: 0
From: Northern Florida
A few things that I really like about the 1970 model, is that it had been out a couple of years which gave GM time to work out some of the gremlins ; plus I like the rear fender flares to stop stones from making a mess , last year for high(er) compression ratio, and tall seat backs are comfy. Plus of course the rear pop-out window which gets a good breeze going thru just like a convertible when the windows are rolled down. Can you say >>> 
??!
??!
Pro
Joined: Sep 2002
Posts: 624
Likes: 1
From: Melbourne, Fla. 6 months- New Middletown, Ohio 6 months
Safety Car
Joined: Sep 2007
Posts: 4,458
Likes: 331
From: Indy Indiana
yes welcome to the world of '70 owners.. don't forget to register
http://www.1970corvetteregistry.org/
http://www.1970corvetteregistry.org/
Pro
Joined: May 2006
Posts: 573
Likes: 5
From: Georgetown Township MI
Welcome.
Us "70'" guys need to stick together.
It's good to have a "common thread" since the
70' seems to be a different animal than the 69' and 71'.
I have found things about my car that are not in the
70' Assembly Manual. A lot of pages were written in early
69' and apparently do not apply to my car, built in late May of 1970.
Rudy
Us "70'" guys need to stick together.
It's good to have a "common thread" since the
70' seems to be a different animal than the 69' and 71'.
I have found things about my car that are not in the
70' Assembly Manual. A lot of pages were written in early
69' and apparently do not apply to my car, built in late May of 1970.
Rudy