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 10-08-2017, 07:15 AM
  #41  
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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 .

Attachment 48121565
Nice Bazza, I have that problem, scraping exhaust over the bumps of Queensland roads
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Old 10-14-2017, 06:11 PM
  #42  
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Originally Posted by 71yellow454 View Post
I used ARH for headers. Only clearance issue was the idler arm. Had to grind off the top of the arm where it bolts to the frame.
Those are nice !! Apart from idle arm where is was there fitment issues?

From looking at this pic which would most likely fit? There top left is ARH , below them the Melrose which hang low im told and next to them 3 ebay ones.

https://www.ebay.com.au/itm/A-G-Body...247526676?null

https://www.ebay.com.au/itm/361891389630?ul_noapp=true


Anymore pics of your exhaust and looking at the shapes of the others which would most likely fit?


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Old 10-14-2017, 07:00 PM
  #43  
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those two ebay links , just watch the firewall clearance as they seem to come back a fair way.
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Old 10-14-2017, 09:33 PM
  #44  
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Originally Posted by bazza77 View Post
those two ebay links , just watch the firewall clearance as they seem to come back a fair way.
Ok so do you think the ones in middle with the backgtpund would work since the primaries angle away from the firewall ? They also seem not to be super close to the ground also lile the others that look a tad longer.
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Old 10-14-2017, 11:21 PM
  #45  
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Originally Posted by R6n350GT View Post
Ok so do you think the ones in middle with the backgtpund would work since the primaries angle away from the firewall ? They also seem not to be super close to the ground also lile the others that look a tad longer.
Now I'm not so sure, here's some pics of mine with my new HSV shorty type headers on .

left side ,







right side,









left side from a different angle ,





the bracket in the foreground is the gear selector ,


don't you have the engine mounts that move it forward ?
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Old 10-14-2017, 11:38 PM
  #46  
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Originally Posted by 71yellow454 View Post
I used ARH for headers. Only clearance issue was the idler arm. Had to grind off the top of the arm where it bolts to the frame.
I missed this before , there's your answer right there. If mine weren't rhd I would have got a set of those and be done with it
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Old 10-15-2017, 12:40 AM
  #47  
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Originally Posted by bazza77 View Post
I missed this before , there's your answer right there. If mine weren't rhd I would have got a set of those and be done with it

i have lhd and yes adjustable engine mounts. Not sure if i will get adjustable trans mount or not..

cost wise as much as i love arh ... ill have to be a gunine pig for the ebay one (i didnt post a link for it but the ones with background)
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Old 10-15-2017, 01:04 AM
  #48  
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Originally Posted by R6n350GT View Post
i have lhd and yes adjustable engine mounts. Not sure if i will get adjustable trans mount or not..

cost wise as much as i love arh ... ill have to be a gunine pig for the ebay one (i didnt post a link for it but the ones with background)

How much are they ?

I got my HSV ones for $150 delivered from nsw
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Old 10-15-2017, 02:05 AM
  #49  
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Originally Posted by bazza77 View Post
How much are they ?

I got my HSV ones for $150 delivered from nsw
arh $1200 usd plus postage $?
ebay ones 150 plus 80 postage

i have seen hsv lhd style shorty 4 to 1s in aus for $188aud but then there is a greater cost of adapting to my current exhaust which connected to long headers on my 305. Getting long headers should help my cam and less work re adapting my dual exhausts.
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Old 10-15-2017, 02:12 AM
  #50  
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Originally Posted by R6n350GT View Post
arh $1200 usd plus postage $?
ebay ones 150 plus 80 postage

i have seen hsv lhd style shorty 4 to 1s in aus for $188aud but then there is a greater cost of adapting to my current exhaust which connected to long headers on my 305. Getting long headers should help my cam and less work re adapting my dual exhausts.
ok fair enough , do you need to run cats on it ?
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Old 10-15-2017, 02:53 AM
  #51  
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Originally Posted by bazza77 View Post
ok fair enough , do you need to run cats on it ?
no cats. I know people have used 98-2005 c5 shorties. 99-02 fbody long header i read somewhere but they look too long height wise. I'll have to take a risk with these headers unless someone from the usa has used a ebay set with ls1 b4..


oh and thanks for the pics bazza. What year is yours ? Rhd i assume.

are people using coil pack relocation where are they mounting them
anyone done any engine work on the c3 ls1 ?

Last edited by R6n350GT; 10-15-2017 at 07:13 AM.
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Old 10-15-2017, 09:37 AM
  #52  
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Based on my current 305 long headers the drivers side at least is very similar to the 97-04 corvette long heads.. i think i will try these



The DNA 98-02 camaro look very similar to the ARH headers but they have these EGR valves or what ever they are and also the pipe i circled may have issues with heater box ??
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Old 10-15-2017, 04:29 PM
  #53  
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Originally Posted by R6n350GT View Post
no cats. I know people have used 98-2005 c5 shorties. 99-02 fbody long header i read somewhere but they look too long height wise. I'll have to take a risk with these headers unless someone from the usa has used a ebay set with ls1 b4..


oh and thanks for the pics bazza. What year is yours ? Rhd i assume.

are people using coil pack relocation where are they mounting them
anyone done any engine work on the c3 ls1 ?
77 with the rhd conversion already done.
with my engine I had to move one coil up a few inches to clear the brake booster , but I don't think that counts .

I think those headers will work . Just remember I don't have the original heater box unit sticking out anymore , so what you saw was my firewall on both sides .
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Old 10-23-2017, 07:23 PM
  #54  
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Originally Posted by bazza77 View Post
77 with the rhd conversion already done.
with my engine I had to move one coil up a few inches to clear the brake booster , but I don't think that counts .

I think those headers will work . Just remember I don't have the original heater box unit sticking out anymore , so what you saw was my firewall on both sides .
Ok i got them, shipping was so fast...

Inlet/ Outlet Sizes: 1-7-8"OD / 3"OD
Piping Diameter: 3"

I hope the trans clears them, they look very close



















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Old 10-23-2017, 08:06 PM
  #55  
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Oh dear
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Old 10-24-2017, 09:29 AM
  #56  
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Originally Posted by bazza77 View Post
Oh dear
hmmm yes I had the same thought when I first saw the angle also.
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Old 10-25-2017, 09:25 PM
  #57  
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[QUOTE=Zorro O;1595051241]
Originally Posted by R6n350GT View Post

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.
Maybe I misread this. Is the whole 485 or only the gauges. The indicator lights do not look centered.

Last edited by bluegtp; 10-26-2017 at 12:05 AM.
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Old 10-26-2017, 01:20 AM
  #58  
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[QUOTE=bluegtp;1595836095]
Originally Posted by Zorro O View Post



Maybe I misread this. Is the whole 485 or only the gauges. The indicator lights do not look centered.
$485.00 was the price for the gauges and the wiring. The box they are in is a stock 79 gauge housing I modified so it would hold the new gauges and still have all the stock lights. The indicator lights are just a piece of plastic that can be moved around to center, I did that when I installed it in the car. I have also painted the washers black so now they and the bolts disappear.

Last edited by Zorro O; 10-26-2017 at 01:39 AM.
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Old 10-26-2017, 07:42 AM
  #59  
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Angle of the collector on those looks just like the Kooks on the LS6 on an engine stand in my shop. They were on a C5, I'm hoping to have them tweaked to work on my swap, I can't see how they would clear a transmission or bellhousing.
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Old 10-26-2017, 04:33 PM
  #60  
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Originally Posted by L88Plus View Post
Angle of the collector on those looks just like the Kooks on the LS6 on an engine stand in my shop. They were on a C5, I'm hoping to have them tweaked to work on my swap, I can't see how they would clear a transmission or bellhousing.
thanks for the reply. So all c5 long headers lile kooks and these will need to be cut and re welded ? I looked up c5 4l60e trans pics and they have tgis bubble at the front which is a different shape to the regular 4l60e.

can you confirm the 4l60 wont fit at all ? I dont have one to test yet
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