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First Corvette, Things to look into

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Old Mar 14, 2014 | 12:09 AM
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Default First Corvette, Things to look into

Well guys, I just bought my first corvette. Been saving up for 3 years and I jumped on craigslist and impulse bought this car within the first 20 minutes of seeing it.

Needs a bit of work, but nothing too major. It's a 75 corvette, matching number, original interior. Don't know what the story is with the bumpers.

Bubah got to the car a little bit unfortunately and melted the back bumper with the muffler when it was installed i guess. That wasnt enough damage for him i guess so he cut it off half way under the body and called it good .

It's a happy California car so it only has surface rust. Has the hurst 4 speed transmission (Desperately needs a rebuild I think, makes grinding sounds when you slow down in gear), but it runs great.

Bleeding the brakes this weekend, could use a few tips. I'm wondering what kind of things I should keep an eye out for on the car while I'm under there.

Obligatory pics: http://s78.photobucket.com/user/the5.../75%20corvette

By the way, what the hell goes into the holes on the engine here.
http://s78.photobucket.com/user/the5...d596b.jpg.html
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Old Mar 14, 2014 | 08:16 AM
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Hi NS,
New Corvette! Nice!
Holes?
I see a plug in the water neck. Probably in another application a sensor is threaded into the neck.
I also see a threaded 'boss' in the intake manifold that may be used when the A.I.R. equipment that's been removed from your engine is in place? Or, it might be used to mount a bracket needed for a/c?
Good Luck!
Regards,
Alan
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Old Mar 14, 2014 | 08:20 AM
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Originally Posted by NothingSpecial
...By the way, what the hell goes into the holes on the engine here.
http://s78.photobucket.com/user/the5...d596b.jpg.html...
A TVS switch. Part of a broken one is still in the manifold.

Congrats on the 75. Order the assembly instruction manual (AIM). AIMs are worth their price.

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Old Mar 14, 2014 | 08:27 AM
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Welcome to the world of Corvettes!
Nice looking car.

While you're bleeding the brakes, you might want to check out the condition of your rubber fuel lines where they connect the tank to the hard lines and the rubber lines at the fuel pump.

Also check out the condition of all the rubber bushings in the front and rear suspension.

Check for power steering fluid leaks. The Corvette system is prone to leaking as it ages. The hoses may be old or the control valve or cylinder could be leaking.

Good luck with your project.
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Old Mar 14, 2014 | 08:28 AM
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RATS! Another new Vette owner who is w-a-y ahead of me!


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Old Mar 15, 2014 | 11:28 AM
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Tried to figure out how to quote on this forum, No dice. Thanks for the advice guys. I guess I really do need to get the aim for it. The power steering sounds like its on the way out too, Though its still super sensitive, So it should be good for some time to come.
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Old Mar 15, 2014 | 11:35 AM
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Originally Posted by NothingSpecial
...Tried to figure out how to quote on this forum, No dice...
Click on Reply to a post. It will open, allow you to make your comments, and quote the original. As long as you keep the quote and /quote in brackets, you'll be good to go.
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Old Mar 15, 2014 | 12:20 PM
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Originally Posted by Easy Mike
Click on Reply to a post. It will open, allow you to make your comments, and quote the original. As long as you keep the quote and /quote in brackets, you'll be good to go.


Like this, see.


Nice car by the way, and welcome.
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Old Mar 15, 2014 | 01:05 PM
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Welcome and grats!

I bought my 78 in 2011 and began the journey you're about to start. First things first, AIM, Haynes, Clymer, and Chassis maintenance manuals and YouTube is great.

I would recommend overhauling the brakes/master cylinder. Caution, you do this you will have to get new lip seals (and you may have to make a decision re: lip seal, o-ring, stainless steel sleeve,etc - personal preference)

I did this and rebuilt the master cylinder...all I can say is yuck...the stuff that came out was disgusting sludge - and the brakes worked!

Secondly, I would just plain commit to replacing the rubber. I put it off and within the first 2 years of driving, replaced every hose but the rads - just a matter of time...

Recommend a wheel alignment/suspension check. Mechanic said ball joints are either gone or bad. So I am in the middle of a complete rebuild this year (more of a while I am it project really...)

That's all just my personal experience and resulting advice. Take it for what it is

Good luck and have fun
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Old Mar 16, 2014 | 02:18 AM
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Originally Posted by 78SilverCam
Welcome and grats!

I would recommend overhauling the brakes/master cylinder. Caution, you do this you will have to get new lip seals (and you may have to make a decision re: lip seal, o-ring, stainless steel sleeve,etc - personal preference)

I did this and rebuilt the master cylinder...all I can say is yuck...the stuff that came out was disgusting sludge - and the brakes worked!

Secondly, I would just plain commit to replacing the rubber. I put it off and within the first 2 years of driving, replaced every hose but the rads - just a matter of time...

Recommend a wheel alignment/suspension check. Mechanic said ball joints are either gone or bad. So I am in the middle of a complete rebuild this year (more of a while I am it project really...)

That's all just my personal experience and resulting advice. Take it for what it is

Good luck and have fun
Good advice. Already doing the rubber as I get the money for it. Doing weatherstripping first so it can be outside during the winter because the garage is packed with junk, and the other one has my pops 68 vette.

Originally Posted by Jbster

While you're bleeding the brakes, you might want to check out the condition of your rubber fuel lines where they connect the tank to the hard lines and the rubber lines at the fuel pump.

Also check out the condition of all the rubber bushings in the front and rear suspension.

Check for power steering fluid leaks. The Corvette system is prone to leaking as it ages. The hoses may be old or the control valve or cylinder could be leaking.
Definitely need to check all of those next time I have it up. I'll probably end up replacing all the lines I'm not sure about just so i dont have to deal with them as they come up.

Pretty sure you're right about the power steering is leaking. It had no fluid in it when I opened it up today.


On another note, I bled the brakes today and found out a couple of weird things about this car. It seems to have been restored frame up (To a degree) once before. The frame is painted, But ONLY in the front half. Bunch of other little things too. Interior is all original though.

Brakes are NOT power assisted, Steering is. They don't feel particularly strong, even after i bled them out.

Also, where do you guys tend to jack up the car? Do you do it right by the cross member, and then throw the jack stands in their normal locations by the wheels? Pops told me to do it just by the cross member and the door is a little misaligned now Anyone have any experiences like this?

Again, Thanks for all your advice.
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Old Mar 16, 2014 | 10:13 AM
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You can also edit the content of what you quote.
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Old Mar 16, 2014 | 11:03 AM
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Check the owners manual to see where you jack it up.

My 78, you put the axle stands at the front and rear of the door (basically).

If the brakes are not strong after bleeding, you wanna wanna redo it and triple check your method (bench bleed master, inside caliper then outside, etc.)

I tried gravity bleeding for 3 days and it got me nowhere. I did the two person method and was perfect. Some swear by the gravity method...different strokes, different folks.
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Old Mar 20, 2014 | 01:38 PM
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Well I just let it sit for a couple of days, and it seems to work fine now. Maybe I was expecting too much from those old brakes. Now I'm onto the exhaust system. Right now the pipes come together in a Y under the car, and it ends right under the shifter because PO done goofed. Looking into an exhaust system now. Knowing nothing of them, I could use a little help with figuring it out.

How do you chose a muffler? Is the engine of any sort of consideration in picking them? I'm eventually going to swap out the l48 for something with a bit more power; So if I got a new exhaust system now i'd want to make sure it was reusable. If exhaust systems and mufflers are more specific to the engine than i think they are, where can I get some decent used mufflers and parts?
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Old Mar 20, 2014 | 03:02 PM
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Originally Posted by NothingSpecial
How do you chose a muffler? Is the engine of any sort of consideration in picking them? I'm eventually going to swap out the l48 for something with a bit more power; So if I got a new exhaust system now i'd want to make sure it was reusable. If exhaust systems and mufflers are more specific to the engine than i think they are, where can I get some decent used mufflers and parts?

Picking an exhaust system that is right for you is important. The first thing you need to figure out is what are your goals for the car? If you plan on an upgraded engine, that may affect your choice as what bolts into an L48 may not bolt into a 427 all aluminum power block of super light demon speed goodness!

(that being said, just a matter of chopping off the heads, replace and weld..but if you dont have to go through that...its better not to...)

But to give you some things to consider: Magnaflow and Flow Master.

Do dual exhaust no matter what you do.
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Old Mar 20, 2014 | 05:52 PM
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Originally Posted by NothingSpecial
It's a happy California car
Congrats. (Putting on my 'Karnak Hat'): Lemme see - this car was in ...............SANTA CLARA!!?

If so, I was watching that C.L. ad for some time; looked like a good solid example - albeit needing a bumper cap? Same car?

Enjoy the journey! I'm a little envious; my '76 needs to have its 'tailpipe' examined every other year.
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Old Mar 21, 2014 | 12:48 AM
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Originally Posted by Capkunu
Congrats. (Putting on my 'Karnak Hat'): Lemme see - this car was in ...............SANTA CLARA!!?
That was the one. Never did I think someone else would recognize the car. Runs great. I'll be bringing it to wherever that car show that was on scotts and el-camino ends up in the future If you want to see it. I DELIBERATELY went for a 75 because I can't bear to see it get a colonoscopy every year. I already have enough trouble with our other cars.


Originally Posted by 78SilverCam
If you plan on an upgraded engine, that may affect your choice as what bolts into an L48 may not bolt into a 427 all aluminum power block of super light demon speed goodness!

(that being said, just a matter of chopping off the heads, replace and weld..but if you dont have to go through that...its better not to...)
Long term goals for the car.
Replace the engine because I'm tired of factory specified 165 HP. (was thinking about ls1's, 427's, or TRYING to build my own engine)
Rebuild clutch and related systems
Rebuild transmission or replace with 5 speed
Power assisted brakes?
Paint, weatherstripping, frame paint,

Definitely going for dual exhaust, No two ways about it. Thinking that I'm going to do a crossover system like my dad's 68 has. Probably putting a magnaflow in because flowmaster (As much as I like it) would be too loud for some of the cruising I'll be doing.

Regardless of what I do, the mufflers SHOULD be reusable regardless of the engine then? I was thinking that if i had an engine that generated a lot of pressure, that it'd change the performance of the mufflers or that if the exhaust system had a different gauge it'd alter it as well.

I got a quote for a different system without any crossing over, but dual pipes and flowmaster for $800. Fair price?

Crossover exhaust and magnaflow exhaust, what do you est the price would be for it? Also, If i posted to the "for sale" forum, do you think i could find a decent pair of mufflers?

Thanks, You guys
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Old Mar 21, 2014 | 08:16 AM
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You definitely have a long road ahead (like me...)

Not sure how much experience you have with working on cars (I had none before I bought my vette), but I started with a year of pure maintenance that would be the equivalent of a comeplete tune up (as outlined in the Haynes manual). Now that I think about it...that year has been over 1100 days...

This will get you in just about every part of the car to see what needs to be done, and what you would like to have done.

One poster on this forum once said the order of restoration is:

1) Make it stop
2) Make it safe
3) Make it go
4) Make it go FAST

Good advice imo.
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Old Mar 21, 2014 | 09:49 AM
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Welcome!
I have a 75 too!
I did dual pipes with Magnaflows. Also had them put in a X-over (they put in a H pipe between the two). I had them put the tail pipe as original to keep the exhaust from melting the tail. For looks, I had my exhaust manifolds powder coated steel grey. Look great after 4 years! I removed that butterfly valve on the passenger exhaust too, as my smog pump is gone.

Go with the true-flex on the bumpers. I glassed my nose in, so the line doesn't show. Looks 100% better. I put in a true-flex rear, but left the lines. I have seen another vette with the rear glassed in like my nose.. Looks sharp.
Replace the hoses. soft lines on the brakes too. Check the bearings, and the U-joints.

Don't give up on that 350! SB Chevy's can be made into screamers with bolt-on parts.

Last edited by sfallison; Mar 21, 2014 at 09:51 AM.
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Old Mar 21, 2014 | 10:33 AM
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NothingSpecial -

Check out the bleeding process, it can be weird in the C3. If I recall it is...

Drivers Rear
Passenger Rear
Drivers front
Passenger front
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Old Mar 21, 2014 | 11:54 AM
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Never did I think someone else would recognize the car. Runs great. I'll be bringing it to wherever that car show that was on scotts and el-camino ends up in the future If you want to see it. I DELIBERATELY went for a 75 because I can't bear to see it get a colonoscopy every year. I already have enough trouble with our other cars.

When I began 'Vette shopping late last summer, I missed out on an okay deal on a '75 - also in need of a front bumper. However, my lowball offer was bested by another buyer. I kept looking at the car you bought, thinking I should check it out. But then, my '76 appeared, which I got for (in my opinion) very stupid money. So, even if it needs a DMV tailpipe cert (thankfully every OTHER year), I can live with it. Another good, stock example that drives well despite needing the usual things.

Yes - I'd like to see your 'Vette. Where's that show again?
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