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LS3 into my 72

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Old Feb 5, 2012 | 03:24 PM
  #221  
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Here is a little more progress. This wiring to make it fit and look decent and the Vintage Air setup requires a whole rewire of the front of the car. Very time consuming. It still looks somewhat like a mess but it is an organized mess and I know where everything will be going.

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Here is the fuse center for the new wiring for the computer and fuel injection harness. Not mounted solid right now but this is where it is going. The computer will be down a little further on the back side of the inner fender. It is accessable here for easy servce.
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Here is the coil relocation and my power center. The top lugs are connected to the starter terminal/battery and the other one is a dedicated line from the alternator. Going down from there is the AC feed, next 2 are for the computer, next 2 are for the Spal fans and the bottom one is for the fuel pump feed.
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Old Feb 5, 2012 | 03:57 PM
  #222  
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Beautiful!
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Old Feb 11, 2012 | 01:36 PM
  #223  
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Default Ls3 dry sump?

Originally Posted by Gordonm
That is my brother in laws car. Take a close look at it there is more detail in there than you can imagine. I have driven that car and it is unreal to drive. I was going to try and make the Fest this year just could not do it time wise.
Gordon,

Sorry to back up, but did you brother-in-law's C2 LS7 have the Dry sump?

Thanks
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Old Feb 11, 2012 | 01:55 PM
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Yours looks too pretty :-(
Well compared to mine anyway. But the LS motors do fit in there nicely.
And I made my accessory mounts before Kwik was available. I might have to swap some time soon.
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Old Feb 11, 2012 | 07:33 PM
  #225  
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Originally Posted by DEEPSEA70
Gordon,

Sorry to back up, but did you brother-in-law's C2 LS7 have the Dry sump?

Thanks
Yes it was a dry sump LS7
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Old Feb 12, 2012 | 07:43 AM
  #226  
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Question on the Kwik alt/PS bracket....
How close is the PS pulley to the A arm? And what diameter pulley did you use?
I've been wanting to add power steering but wasn't sure if the Kwik bracket would clear.
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Old Feb 12, 2012 | 09:01 AM
  #227  
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Originally Posted by Garys 68
Question on the Kwik alt/PS bracket....
How close is the PS pulley to the A arm? And what diameter pulley did you use?
I've been wanting to add power steering but wasn't sure if the Kwik bracket would clear.
Go back to some of the earlier pages in this post and you will see what i did to make it fit. Siting in the airport waiting to come home after a week away so i dont have all the info here with me but i did document about the pulleys on some of the earlier pages.
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Old Feb 12, 2012 | 09:14 AM
  #228  
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I like what you have done to have a main power distribution center. Mine is not nearly that neat but it has been on my list of things to do to make my install neater.
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Old Feb 12, 2012 | 09:15 AM
  #229  
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Thanks, I found the earlier post (page 2?) about the Dorman 300-301, but then saw your pics just a couple pages back and your comments.
It look really close in the pic, are you keeping that pulley?
Btw, I used the same pulley in my Olds swap. I couldn't find anything smaller.
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Old Feb 12, 2012 | 08:32 PM
  #230  
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Yes I am keeping that pulley. It is not as close as it looks and engine torque will take it away from the frame. I did have to trim back the upper control arm mounting bolt some to gain a little clearance and I also had to modify the spreader bar mount some but it should all clear.

I will be back it it this week after being gone for a week goofing off. Key West is tough to take this time of year.
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Old Feb 12, 2012 | 10:57 PM
  #231  
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Looking great Gordon. Cant wait to see more....
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Old Feb 19, 2012 | 03:17 AM
  #232  
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Default Evap

Gordon,

How did you handle you Evap?

Thanks.

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Old Feb 19, 2012 | 09:34 AM
  #233  
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Originally Posted by DEEPSEA70
Gordon,

How did you handle you Evap?

Thanks.
Removed it all. The new wiring harness does not have any ofthat in it and the yremoved all that from the computer. The motor does get fresh air and there is a Vacuum port to suck the fumes back into the motor but nothingto do with the Evap system.
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Old Feb 22, 2012 | 02:03 AM
  #234  
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Default adjustable or preset filter

Originally Posted by Gordonm
One more little thing crossed off the list. MOunted and installed the filter/regulator on the frame. I am using the stock fuel line, cut to the right length of course and using the Vette fliter/regulator. I still have to plumb the lines from the pump down to the filter but I am doing that on the tank.


Is this filter/regulator adjustable or preset. Also, is anyone using an oil pressure shut off safety switch to shut down the pump in an accident. I've read and seen a C5 filter/regulator similar to this. Would this be the same type, and can the filter be changed, or the whole thing? Thanks.
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Old Feb 22, 2012 | 07:07 AM
  #235  
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Originally Posted by DEEPSEA70
Is this filter/regulator adjustable or preset. Also, is anyone using an oil pressure shut off safety switch to shut down the pump in an accident. I've read and seen a C5 filter/regulator similar to this. Would this be the same type, and can the filter be changed, or the whole thing? Thanks.
This is the C5 regulator and it is not adjustable. They are pretty cheap to replace so the whole unit gets tossed. I will never have to replace it in my lifetime as I probably will never accumulate the mileage to need a replacement. As for the OP shut off I am not running one and most do not but it can be easily put into the system if needed.
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Old Feb 22, 2012 | 08:26 AM
  #236  
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My understanding is that the ecu shuts down the fuel pump when the crank signal stops, so no oil pressure or inertia switch is needed.
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Old Feb 22, 2012 | 05:07 PM
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Originally Posted by Garys 68
My understanding is that the ecu shuts down the fuel pump when the crank signal stops, so no oil pressure or inertia switch is needed.
Thanks,

I'll be sending my stock harness to Current Performance; and after reading their info, I see that the fuel pump relay will be added.

As for the filter/reg, I've seen these listed for $125 and $29. Is there a flow difference between the two. I'll be using the Walbro 250 in tank pump.
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Old Feb 25, 2012 | 12:41 PM
  #238  
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Hi Gordon/all

I've been following this thread on and off for some time. I'm dropping a carburetted LS3 into my 69 and have had to face some of the same fit issues that were addressed in this post here and there. I realize I am visiting the "past" a bit but hopefully some of this is useful to share. So here goes!

Waterpump: Starting on the passenger side with the waterpump, I too threaded in some 45 degree fittings. In my case though I think I have enough clearance, for two reasons. First is the control arm itself. It's not the original stock, it is an adjustable arm from Savitske Classic and Custom. Because of the way it adjusts, there are no shims pushing the arm towards the pump. Second reason is that I hacksawed about 3/16" off the heater side face of the pump to move the fittings closer to the center of the car. There was still plenty of material left for the fittings to engage. As a result I have close to 3/4" of clearance which, with polyurethane mounts (Energy Suspension), should be enough. I plan to put in some telltales with plumber's putty to see what happens under torque. My fallback position would be to put in a solid motor mount on the passenger side.

Here's a photo:



And yes that is dust or maybe pollen from the neighbors pine trees. I didn't realize how much until the flash lit it up.

Spreader Bar: I think I saw a spreader bar in one of the earlier photos. I would like to get a little more detail on how that's been handled by anyone that cares to comment.

Clearly the stock thermostat housing can't be used, so in this photo



there's a straight housing installed. The difficulty is, how do I mount a bar and still get to the (DeWitts) radiator? I tried mounting the bar lower with a 45 degree bracket but decided that might be dumb as it would exert a significant torque on the shock tower. As you can see, I've moved the bar forward to gain some room. Pegasus has some 90 degree silicone hose sections so I suppose I could piece something together. But I don't like where that takes me, looks like TinkerToys I bet.

I also think I can slice the stock housing at the flat on my table saw and get Eddy the welder (Applied Welding Technology in Mt. View, CA) to put it back together with a better orientation. Great guy to work with, his motto is "no job too small". We'll see if that approach works. In any event, who's solved this and how? And what hoses did you use?

Power Steering: I went with the KWIK bracket set and the power steering pump they sell as well. As delivered, it was a no go with the straight brass return line that comes off the pump. But I happened to call Wayne at KWIK on the right day to ask what to do. He had a 90 degree fitting on hand that he says he gets occasionally, so he mailed it out to me for $15. It's probably cheaper somewhere but I was happy. Also he suggested a Loctite 609 compound specifically for pressed in fittings. And just to get the maximum surface area for the fitting to grip, I ground the rounded end of the pressed-in part almost flat and then pounded it in. There is only about 3/8" of metal in that part of the pump. So that, the adjustable control arms, and a hacksawed mounting bolt all look like they will work. I did have to pull the pulley out a bit to align the belt. I figure on some more of the Loctite.



Not shown is a Borgeson steering box. I think that is responsible for not having to swap out the Corvette oil pan on the motor. That box came later and I am the owner of a never used brand new Mast pan which if someone needs I can sell at a good price. My plan right now is to use an Accusump for oil control. I had that working just fine with the old motor and have autocrossed for over a decade.

Alternator: I managed to mount my stock alternator on the KWIK brackets. Means I don't have to rewire anything. A few years back, I'd converted my 350 to a serpentine setup, so that was good to go. The pulleys came from March Performance and there were a couple of parts with the kit that I didn't need, but were too pretty to throw out, so I stuck them in a drawer. Magically (I mean how often does this happen?) one of them was perfect for mounting the alternator. Here's the back view.



And here's the front view.



How cool is that! I sent Wayne a tracing, maybe he will decide to reproduce it, shouldn't be hard. I suppose you could also ask at March, it was in a complete kit however.

Clutch: I'm using my original bellhousing and M20 transmission aft of the motor. The bellcrank for the linkage was in the way of the stock exhaust manifold exhaust pipe. So Eddy the welder ground off the old welds and moved the arm inboard to clear the exhaust pipe. No job too small! Here's that picture:



You can also see here the aluminum arm that March sold me in their kit to mount the alternator on the old motor. I think this is the same arm in the picture of Gary's 68. I didn't use it, made my own bracket and threw theirs in the same drawer. It just happened to be the right length (!!!!! again) to substitute for the sloppy factory arm with anti-rattle springs and all that mess.

I have a centerforce flywheel and pressure plate installed. I guess the crank flat is in a different position as the whole business was moved forward a bit and the yoke was way out of place. After comparing the old with the new a couple of times, I found that McLeod sells a deeper throwout bearing (16021) on e-bay and that fit duplicated the original factory yoke position. The original transmission pilot shaft was fully engaged in the pilot bearing so everything is looking very promising.

That's my story so far! Now to go blow off some of that dust.
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Old Mar 3, 2012 | 04:14 PM
  #239  
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Waterpump: Starting on the passenger side with the waterpump, I too threaded in some 45 degree fittings. In my case though I think I have enough clearance, for two reasons. First is the control arm itself. It's not the original stock, it is an adjustable arm from Savitske Classic and Custom. Because of the way it adjusts, there are no shims pushing the arm towards the pump. Second reason is that I hacksawed about 3/16" off the heater side face of the pump to move the fittings closer to the center of the car. There was still plenty of material left for the fittings to engage. As a result I have close to 3/4" of clearance which, with polyurethane mounts (Energy Suspension), should be enough. I plan to put in some telltales with plumber's putty to see what happens under torque. My fallback position would be to put in a solid motor mount on the passenger side.

Here's a photo:



Do you have pn's and a source for the heater fittings. What I have right now are almost on top of the control arm.

Thanks
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Old Mar 3, 2012 | 09:26 PM
  #240  
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I ordered the fittings and hose from Pegasus. The hose fittings are

3288-10-045 - Aluminum 5/8" Barbed Hose End - 10AN Female Swivel 45 degree
3288-12-045 - Aluminum 3/4" Barbed Hose End - 12AN Female Swivel 45 degree

and go with their 5/8" ID and 3/4" ID hose 3491-10 and 3491-12 either black or blue. Ordinary heater hose would probably work just fine too. This hose was kind of pricey.

You will also need some taps, standard NPT 3/8"-18 and 1/2"-14. The holes were the right size but it was a bitch to get the inserts out. I used vise grips and a pickle fork and was slowly able to work them out. Recommend you put in some kind of sealant. I used the LocTite Thread Sealand Stick.

I lost track of the part numbers for the part that goes into the water pump but you can probably find 10AN - 3/8" NPT and 12AN - 1/2" NPT 45 degrees readily in the Earl's catalog or at Summit. You might find equivalent barbed fittings there too.

One last thing, I kept increasing the depth of the pipe thread tap until I had a minimum of thread showing in the fitting.

Cheers!

Last edited by ignatz; Mar 3, 2012 at 09:34 PM. Reason: additional info I forgot
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