Literally! :D :D I have a bunch of screws and bolts that need a home. Since I had to pull my baby from a dishonest car shop for a head gasket job, I wasn't the one who took it apart. But I am determined to take my time and do it right the first time, meaning nothing left over when I'm done.

Are Corvette bolts measured in Metric or SAE? The Helm manual I have has them in Metric which surprised me. I can list all of the measurements next to the numbers below but need to know which to put.

I just need a little help in identifying some of the bolts. If you think you recognize any of the groupings of bolts, please indicate the number of grouping and what they may go to. Much obliged! I can't do this without you!! :p: :p: :p:

Here are two main photos of all the bolts

Click photo for larger image


Click photo for larger image

Here are the Close-Up's of the different bolts. The bolt in the very middle of each photo is the one in the category. I don’t have the pitch, so each bolt’s size below (width x length). I am updating this post each time new information becomes available. I thank you all who have responded so far!

Bolt 1 8mm x 55mm (TPI) (INTAKE MAN.) (FUEL RAIL INTAKE)
Bolt 2 10mm x 27mm (TPI) (TO BOLT INTAKE MAN. TO HEADS) (INTAKE MAN.) (INTAKE BASE TO HEADS)
Bolt 3 8mm x 40mm (TPI) (INTAKE MAN.) (INTAKE RUNNERS TO BASE, ANGLED)
Bolt 4 8mm x 30mm (INTAKE) (TPI) (INTAKE MAN.)
Bolt 5 8mm x 20mm (INTAKE) (TPI) (HOLDS BRACKET ON MAN. ON RIGHT REAR)
Bolt 6 6mm x 25mm
Bolt 7 10mm x 110mm (BRACES, ALTERNATOR, AC) (ACCESSORY BOLT) (BELT TENSIONER BOLT)
Bolt 8 10mm x 105mm (big hex head) (ACCESSORY BOLT)
Bolt 9 10mm x 105mm (small hex head) (ACCESSORY BOLT) (HOLDS AC TO BRACKET)
Bolt 10 10mm x 130mm (HOLDS AC TO BRACKET)
Bolt 11 10mm x 85mm (HOLDS AC TO BRACKET)
Bolt 12 10mm x 63mm (HOLDS AC TO BRACKET)
Bolt 13 10mm x 50mm
Bolt 14 8mm x 45mm
Bolt 15 8mm x 70mm (THROTTLE BODY) (OR FUEL RAIL TO MANIFOLD?)
Bolt 16 10mm x 35mm
Bolt 17 10mm x 30mm
Bolt 18 8mm x 37mm
Bolt 19 10mm x 25mm
Bolt 20 8mm x 17mm (EGR BOLTS?)
Bolt 21 6mm x 12mm
Bolt 22 8mm x 55mm
Bolt 23 12mm x 75mm (HEAD BOLTS)
Bolt 24 12mm x 93mm (HEAD BOLTS LONG)
Bolt 25 10mm x 30mm, stud 20mm (BRACKETS ON FRONT OF ENGINE OR EXHAUST MAN.) (REAR BOLT FOR THEMOSTAT HOUSING)
Bolt 26 10mm x 53mm, stud 18mm (BRACKETS ON FRONT OF ENGINE OR EXHAUST MAN.)
Bolt 27 10mm x 52mm, stud 42mm (BRACKETS ON FRONT OF ENGINE OR EXHAUST MAN.) (WATERPUMP)
Bolt 28 10mm x 52mm, stud 18mm (BRACKETS ON FRONT OF ENGINE OR EXHAUST MAN.) (THROT. CABLE TO UPPER INTAKE PLENUM)
Bolt 29 10mm x 45mm, stud 23mm (BRACKETS ON FRONT OF ENGINE OR EXHAUST MAN.)
Bolt 30 12mm x 40mm (HEAD BOLTS SHORT)
Bolt 31 10mm x 25mm (DISTRIBUTOR HOLD-DOWN)
Nut 32
Nut 33
Nut 34
Nut 35 (VALVE COVER)
Bolt 36 8mm x 30mm, stud 32mm (LEFT SIDE PLENUM, HOLDS CLIP FOR THR. CABLE) (DRIVERS SIDE INTAKE RUNNERS TO INTAKE PLENUM)
Washer 37
Screw 38 (VACUUM LINE BOX, PASS. SIDE?)
Screw 39
Screw 40 (HOLDS IN AIR ACCUMULATOR BRACKET)
Screw 41 (VACUUM LINE BOX, PASS. SIDE?)

Here are two views of some of the bolts next to a ruler so you can get a real rough idea of their sizes:
Photo 1
Photo 2

In advance, I appreciate your time. I am already in your debt.

Thanks,
Shayne



[Modified by sspackman, 12:12 PM 11/21/2002]

 

I have a different question for you please.

Im sorry that I cant answer your questions but.................

what " code" did you use to link one pic to another?

I thought it was=

large pic address[img]small[/img]

but that is obviously incorrect.... can you help me out please...

to others.. I dont want to steal his thread, so you can email me at p_rush@yahoo.com if you can.

thanks

 

No problem! Here is a sample:

[sampurl=http://12.43.65.33/clientfiles/shayne/Bolt01.jpg]Bolt 1[/url]
[sampurl=http://12.43.65.33/clientfiles/shayne/Bolt02.jpg]Bolt 2[/url]
[sampurl=http://12.43.65.33/clientfiles/shayne/Bolt03.jpg]Bolt 3[/url]

and so on and so on...

Just remove the 'samp' and you are set.

Take care,
Shayne :)


[Modified by sspackman, 4:27 PM 11/18/2002]

 

They are Metric. I will look in my parts book tonight and get some numbers for you and I can post them tomorrow. :cheers:

It's for an '85 right?

 

You got it! An '85.

When measuring these out, say that the bolt size is an '8' or a '10'. If that's the case, that means 8mm and 10mm, right? Oh! Does that mean that I'm supposed to measure the length of these bolts in centimeters and mm as well?


[Modified by sspackman, 4:30 PM 11/18/2002]

 

:yesnod: W/L/P (width, length and pitch) ie: 8mm x 30mm x 1.25

Also, if I were you I would get replacement bolts for those torx head ones. The torx ones tend to strip really easily when going in and out especially with the amount of torque you will need. It's definately worth the cost to replace them. You can get 6pt, 12pt or allen heads. I opted for the allen head ones from http://www.alloyboltz.com/cgi-bin/al...talogno=A-5670

Oh, also, buy new o-rings for the fuel injectors. It's common practice to replace them when they have been removed. You also may consider pulling your injectors (since their basically nearly out anyway) and send them to Cruzin' Performance to get cleaned and blueprinted http://www.cruzinperformance.com/fuelinj.html . If you do this you should buy some new retaining clips for the injectors. P/N: 1711-1267, about $6 from the dealer and you will need two packs cuz they come in packs of (5).




[Modified by VetBoy89, 3:40 PM 11/18/2002]

 

That's a lot of bolts. I would agree that you should replace some of them. Once you find out what they are of course. Good luck, I'm sure everyone who can will do their best to help you. I of course am here for moral support :D Good luck! I'm sure you can do this.

J :seeya

 

Thanks VetBoy89, I appreciate the help and the links very much!

The longest bolts are the head bolts, correct?

I really like the idea of purchasing a whole kit of new bolts especially because the people selling them must have figured out beforehand how many bolts are needed in which location and their sizes, effectively taking the guesswork out of it.

I am looking up there right now on that site you posted. I noticed right away the TPI kit has Allen bolts. Would that type of bolt be more difficult to work with than hex headed?

 

I wouldn't worry about replacing any of the bolts, except the head bolts. Run the bolts through the proper dies with WD40 while you're at it. You could replace the 12 torx bolts on the intake base. Torx bolts are great, because it's hard to strip the head on em, unless your using a crappy or wrong sized torx driver. I had all this pulled apart recently on my '85 (except for heads), so I could help you out from what I remember. I have pics of my intake teardown, but it doesn't help much for sizing the bolts, only for knowing where to put em! (in the holes! :lol: :lol: ) and what the bolt heads look like. It looks like you have some accessory bolts in there too, for the A/C bracket, waterpump, etc.
If I recall, there are some metric bolts, and some standard bolts. (It was a real PITA, swapping sockets all the time.)

 

Are you kidding????
How in the hell can anyone tell you what goes to what.......get the book....and check.....this question is so very hard......

I cannot say anyone could really help you.......you must figure it out......and I know you can.....if you started it...you can finish it....

to bad....so sad......

tony


:crazy: :crazy: :crazy: :crazy: :crazy:

 

1,2,3 are intake TPI bolts, 24 looks like head bolts, the long ones, 30 is probably the short head bolts. 25-28 are used on brackets on the front of the engine or possibly exhaust manifold if any are missing there. the thread pitch and length should be good give aways. as funny as it sounds i could probably assemble your whole engine with that box of bolts if i was there but it's hard to name every single one as i can't do a comparison with the bolt on the hole. 15 look like throttle body bolts, 7-12 are used on the braces and alternator & probably AC, again it's hard to see size, 15 could be the AC bolts & not the TB but you can easily tell in person. your welcome to post back any specific questions and i'll try to be more help. honestly a lot of the stuff only fits togeather one way. if at all possible deck .005 off the head before you do another gasket, it doesn't effect compression much and promotes a much more positive seal.


[Modified by gtsyellow, 1:32 AM 11/19/2002]

 

Here's what I can tell from the pic.

1-5 intake bolts. #2 bolt the intake manifold to the heads. #5 hold a bracket on the manifold on the right rear(its a tube coming out).

15 is throttle body

35 is valve cover bolts I think, looks right

36 goes into the left side of the plenum and has a clip that slides on it that holds the throttle cable and cruise cable.

7-9 I would bet are accessory bolts. There are many long bolts for accessories, and they are corroded so they have not been on the inside of the engine.

 

I don't think Allen bolts work for me, I didn't buy new bolts to for my intake mainfold and plenum when I put my engine back (forgot about all about it until it too late:(). For the intake manifold, you need to torque the bolts in sequence with a torque wrench. Since I don't have any Allen wrench (socket?) that fit to the 1/2" torque wrench so I rather use the hex bolts that way I don't have to buy more tools:).

When I took the engine apart, I bags and label everything. Your question is very difficult to answer. Maybe Scorp can answer it since he taking apart the engine and put it back thousand of times this year:).

 

That is some mighty nice snow in the background of your sig picture....

Fly me there and I will put your car together and then go skiing....sound like a deal? :lol:

Dude you have a mess there! I can idendify many of them, but to not be there in person its pretty tough...

:cheers:

 

OK here is what I came up with . I ripped apart my engine quite a bit in the last year so things are fresh. The only problem is I did away with many of the shown bolts with replacing my intake and exhaust manifolds.

23,24, & 30 are all head bolts

1-4 are intake maifold and plenum bolts

25-29 are combination of Exhaust Manifold and Front Brackets (power steering and AC) you will have to find which go where. Even when I bag the front bracket ones it takes a minute or two of looking to tell exactly were.

34,32,33,35 are all nuts for the 25-29 studs. Again you will have to pair them up then shuffle them around to get them in the right spots.

9,10,11,12 are all what hold the AC pump to the bracket, there are 4 total. A few of the others like 7&8 might be one of them too..hard to tell..

15 are throttle body bolts (pretty sure)

31 looks like the distributer holddown bolt

That is about 95% of them, the rest will go were there are holes :lol:

You will have to equal length ones for the Thermostat Housing...

That is pretty damn good I must say for sitting at work in my office and going just from memory. Some of which was 1 yr ago! I never do stop amazing myself :jester

Good luck and let me know if you need anything else.

PS I will start packing my ski equip. :smash:

Oh just thought of two others....5 are what hold the fuel rail to the front of the plenum...Oh my just thought of 4 others...Hold on...

#15s could also be the 4 that hold down the entire fuel rail to the manifold..did they take that off :yesnod:

This is just sick! :cheers:


[Modified by ski_dwn_it, 11:54 AM 11/19/2002]

 

hmmm instead of having one screw loose, you have a whole bucket of loose screws you NUT!!! :lol: :p:

 

Since you have an '85 I believe the lower intake to cyl head bolts are SAE standard 3/8"-16 UNC bolts. They were on my '86. They are the same as all the old SBC intake bolts. I replaced them with ARP 12-point bolts. For some reason the ARP intake bolt sets come with 4 bolts that have a taller head. I ended up combining two sets to make sure they were all the low profile version. I believe these bolts were changed to metric threads in '87.

The cyl head bolts are probably also standard SAE threads but I don't remember what size (7/16"?). The exhaust manifold bolts are also SAE I think. I think 4 of those studs are used as exhaust manifold bolts. They have the same threads as the intake bolts.

I believe everything else is metric.

 

Any bolt that threads into the block or heads is standard, the rest are metric.

 

Where the heck is he? Man all that brain power I offered yesterday and nothing! :D

He's probably off playing with his nuts! :lol:


[Modified by ski_dwn_it, 2:33 PM 11/20/2002]

 

Sorry man!! The whole fam damily has the flu, YUK! :U :U :U :U :U
I'm a little behind, but still here ;)

I'm having more fun with my nuts than I care to mention on this forum. Anyway that was incredible information! And from memory?

Thanks a lot. Now what I will do is take everything in this post and update the top of it with all the information. I called Alloyboltz.com yesterday and placed an order for the TPI kit ($54).

It however does NOT come with the head bolts. The ones he recommended since my engine is a 383 is the Grade 8 Stainless Steel ($105, ouch). Needless to say I did not order the head bolts at this time. I'm going to find them from somewhere else.

Once again, thanks especially to ski_dwn_it, vetboy89, CentralCoaster, gtsyellow, hz900, jmr302 and all others that have taken the time to post extremely useful information to me. I am very grateful and hope to be able to return the favor in a future post.

I'll be back real soon.
Shayne :D


[Modified by sspackman, 1:05 PM 11/20/2002]