C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

LS1 and 460le into a 1980 C3 Part List

 
Old 06-30-2017, 09:02 AM
  #21  
bazza77
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Originally Posted by R6n350GT View Post
What engine did you use? Will i be able to use the holden ls1 headers?
I used a VT commodore LS but I and you cant use the standard SS cast headers as they put the pipe(s) right into the chassis , the ls3 ones exit at the rear and down so clear everything, you can get them on gumtree sometimes for about $50
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Old 06-30-2017, 09:29 AM
  #22  
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here's a pic of the cut out I put in the cross-member , lets the pipe sit up higher .

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Old 06-30-2017, 12:16 PM
  #23  
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[QUOTE=R6n350GT;1595049506]
Originally Posted by Zorro O View Post



Prices and links?
It's just Speedhut.com
The gauges were just under $485.00 for the pair. If you go to the web site
Be sure to hit the customize button. They are having a forth of July sale now,
The gauges are 15% off.

Last edited by Zorro O; 07-01-2017 at 12:43 AM.
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Old 06-30-2017, 10:37 PM
  #24  
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Love seeing how others tackle a LS conversion. There are about 4 listed on here that have done it that I can recall. Most of US have tackled it in different ways. I'm getting close to finishing mine with a LS3 Crate Motor and 4l60E. All that's left is the body and put it back on the frame. I have it running. Here is a link you might get some Ideas

https://www.corvetteforum.com/forums...estration.html

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Old 07-01-2017, 05:15 AM
  #25  
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Originally Posted by bazza77 View Post
here's a pic of the cut out I put in the cross-member , lets the pipe sit up higher .

Its soooo clean !!! Thanks. That crossmember looks like some of the aftermarket ones. Im slowly getting a list of things... what about these headers ?

What mount for trans did you use? the C3 mount with a bracket to fit the 460le or 460le mount and adapter to fit c3 cross member?


http://www.ebay.com.au/itm/GENUINE-H...EAAOSwxu5ZDRbY

or

http://www.ebay.com.au/itm/LS1-LS2-L...IAAOSwo4pYfya3

Last edited by R6n350GT; 07-01-2017 at 05:18 AM.
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Old 07-01-2017, 06:07 AM
  #26  
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cross member is from an 80 or 81 vette , but I think it was for a manual as it had a bolt on trans. mount which I didn't use , you can see the piece of flat plate I used ,I ended up bending 2 90* angles in it and just plonked the box mount on it and drilled holes etc.

as for those headers , no idea , mines rhd so its different from yours anyway. but I just bought a used set of the HSV and will be putting them on in a few weeks time so I will see how they go.

its not that clean under there anymore , I drive it as much as possible.

are you going to engineer it ?

Last edited by bazza77; 07-01-2017 at 06:09 AM.
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Old 07-01-2017, 07:06 AM
  #27  
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Originally Posted by bazza77 View Post
cross member is from an 80 or 81 vette , but I think it was for a manual as it had a bolt on trans. mount which I didn't use , you can see the piece of flat plate I used ,I ended up bending 2 90* angles in it and just plonked the box mount on it and drilled holes etc.

as for those headers , no idea , mines rhd so its different from yours anyway. but I just bought a used set of the HSV and will be putting them on in a few weeks time so I will see how they go.

its not that clean under there anymore , I drive it as much as possible.

are you going to engineer it ?
You should see mine... whole care is so bad underneath. i have cleaned from front to start of trans and from rear diff area to fuel tank. Wire brushing, rush proof paint, sound deadening as i go..

I think ill use the Gforce 4L60E Adjustable Transmission Mount and cut the 1980c3 auto cross member bracket and get someone to weld on a plate. I can do pretty much everything else bar weld and fibreglass work. Which i guess on these cars limits me to really just modify things on a small scale..
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Old 07-01-2017, 07:51 AM
  #28  
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Originally Posted by Tim 1973 View Post
Love seeing how others tackle a LS conversion. There are about 4 listed on here that have done it that I can recall. Most of US have tackled it in different ways. I'm getting close to finishing mine with a LS3 Crate Motor and 4l60E. All that's left is the body and put it back on the frame. I have it running. Here is a link you might get some Ideas

https://www.corvetteforum.com/forums...estration.html

Tim
Braver man than me, I wouldn't take on a project car in that condition I don't think....
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Old 07-01-2017, 07:54 AM
  #29  
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Originally Posted by R6n350GT View Post
You should see mine... whole care is so bad underneath. i have cleaned from front to start of trans and from rear diff area to fuel tank. Wire brushing, rush proof paint, sound deadening as i go..

I think ill use the Gforce 4L60E Adjustable Transmission Mount and cut the 1980c3 auto cross member bracket and get someone to weld on a plate. I can do pretty much everything else bar weld and fibreglass work. Which i guess on these cars limits me to really just modify things on a small scale..
I'm trying to find some pics of mine when I started , what a mess it was ,I spend many hours under it scrubbing before any thought of paint ! anyway , what I learned was not to overthink the problems ,that's why I suggested to wait and see , as in just what you need to fix it to the cross member before going out and buying expensive stuff. You will need to do enough of that as it is

I had not done much fibre glassing before I started working on these cars. So a self taught welder and glasser here .

from this ,


to this,





where are you anyway ?
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Old 07-01-2017, 08:57 AM
  #30  
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Wow i cant wait to do that. I will replace all the AC lines as of right now i only get AC from the top vents not front vents....

Did you use heat shielding tape on the tunnel and firewall or sound deadner ?

Im near mystic pete on the goldcoast

I should start a build thread. Front end is done, some minor things inside the cabin, and rear end is being completely rebuilt.

I will move this post later to its own thread.




dual exhaust - no resonators / mufflers #loudaf



Trailing arms still on



Trailing arms gone



The rear end was worse than this.. Trans is still this bad...



under car is full of this



finally clean



cleaned and sound deadened



sound deadened and painted with epoxy rust proofing



sound deadened and painted with epoxy rust proofing



need to put some rubber / carpet in the bottom to further help with sound / heat
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Old 07-01-2017, 09:21 AM
  #31  
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yes I put some heat shield stuff on the bottom , it is a peel the back off ,stick on type but seems to be holding ok,





also put the dynomat inside , made a big difference with the road noise ,my 77 is pretty quiet, I can actually have a conversation in it while driving

looks like you wont have any corrosion problems under there , strangely enough just a good clean up makes working on it a lot better.

when you say the fronts done ,have you allowed for the lighter engine to go back in ? lol

Last edited by bazza77; 07-01-2017 at 09:24 AM.
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Old 07-01-2017, 09:36 AM
  #32  
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Originally Posted by bazza77 View Post
yes I put some heat shield stuff on the bottom , it is a peel the back off ,stick on type but seems to be holding ok,
also put the dynomat inside , made a big difference with the road noise ,my 77 is pretty quiet, I can actually have a conversation in it while driving

looks like you wont have any corrosion problems under there , strangely enough just a good clean up makes working on it a lot better.

when you say the fronts done ,have you allowed for the lighter engine to go back in ? lol
What did you use to paint the under carriage ?

And no changes for the lighter block yet... suggestions ?

New Front springs, shocks, 1 1/8 sway bar, energy suspension bushes everywhere, upper and lower control arms, idler arm, borgeson ps pump and steering box, rebuilt calipers, brained lines, master cylinder rotors , new grease in all the joints...
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Old 07-01-2017, 11:34 AM
  #33  
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Theres a 200lb difference in engine weight, I didn't change my front springs out and it still sits even. If I Was going o change them it would be for a set of adjustable like these Speed Direct Coil Overs
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Old 07-01-2017, 11:37 AM
  #34  
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If you want to see a real passionate Vette resto have a good look at this thread, probably one of the best I've ever come across. https://www.corvetteforum.com/forums...1-journey.html
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Old 07-01-2017, 11:40 AM
  #35  
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Originally Posted by mysticpete View Post
Braver man than me, I wouldn't take on a project car in that condition I don't think....
Yes mine was a basket case but far from that now....

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Old 07-01-2017, 11:45 AM
  #36  
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Originally Posted by mysticpete View Post
Theres a 200lb difference in engine weight, I didn't change my front springs out and it still sits even. If I Was going o change them it would be for a set of adjustable like these Speed Direct Coil Overs
This looks like the coil overs I have on mine, Purchased mine from VBP I like the ability to adjust. wont know how it rids for another 6 months

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Old 07-01-2017, 11:49 AM
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Originally Posted by Tim 1973 View Post
This looks like the coil overs I have on mine, Purchased mine from VBP I like the ability to adjust. wont know how it rids for another 6 months

Tim
Posted on your build earlier Tim
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Old 07-01-2017, 12:07 PM
  #38  
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Originally Posted by mysticpete View Post
Posted on your build earlier Tim
just replied....
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Old 07-01-2017, 07:04 PM
  #39  
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Originally Posted by mysticpete View Post
Theres a 200lb difference in engine weight, I didn't change my front springs out and it still sits even. If I Was going o change them it would be for a set of adjustable like these Speed Direct Coil Overs
When I pulled my front springs out , both were broken so I had to get new ones , I went with the 460lb from zip corvette, when it was all back together and driving they were still about 2 inches too high , so I cut them down , too much as it turned out , had about 40mm ground clearance looked so good but useless anyway a guy local had some unused 550lb (correct zip corvette sticker still on them ) so I put them on and it sits nicely now . I cant see the point(in my case) of paying so much for an adjustable set -up, only to do one adjust then leave it. It takes about one hour to change both side front springs and those cost about $80.

R6n350gt..... I got the frame and big bumper pieces sand blasted and then I painted it with 2 pak primer and then a gloss black metal paint . all suspension pieces I blasted in my cabinet and painted myself . I tried to do as much as possible myself.

with your springs I suggest , wait until its finished and see how it sits.

Last edited by bazza77; 07-01-2017 at 07:07 PM.
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Old 07-01-2017, 10:05 PM
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Originally Posted by bazza77 View Post
When I pulled my front springs out , both were broken so I had to get new ones , I went with the 460lb from zip corvette, when it was all back together and driving they were still about 2 inches too high , so I cut them down , too much as it turned out , had about 40mm ground clearance looked so good but useless anyway a guy local had some unused 550lb (correct zip corvette sticker still on them ) so I put them on and it sits nicely now . I cant see the point(in my case) of paying so much for an adjustable set -up, only to do one adjust then leave it. It takes about one hour to change both side front springs and those cost about $80.

R6n350gt..... I got the frame and big bumper pieces sand blasted and then I painted it with 2 pak primer and then a gloss black metal paint . all suspension pieces I blasted in my cabinet and painted myself . I tried to do as much as possible myself.

with your springs I suggest , wait until its finished and see how it sits.
Depends if your racing or not Bazza
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