Conversions & Swaps LSX Engines in Non-LSX Vehicles
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1971 Nova Swap - 02 LS1/A4

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Old 11-06-2010 | 06:52 PM
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Default 1971 Nova Swap - 02 LS1/A4

Well, Finally getting around to starting my thread of my 2nd swap project. My 1st swap was completed in Dec 2005, That was my 71 Chevelle Frame off RestoMod (see sig).

It is a 1971 Nova (6cyc/2sp) car that I've had for a few years, used it as a DD. It only has 27k original miles on it when I picked it up. But it had a hard life in the streets of San Francisco while the 1st owner went to school at USF. It then sat around for years after. It was then picked up in an Estate Sale by the 2nd owner. I then picked it up from him, He didn't want to spend the time and money on it. It now has 39k on it.

After Cleaning it up some and getting it running pertty good (for a 6cyl 2 sp car). It ran 19 sec at Infieon. So.. its going to be pertty simple to improve performance and milage.




I picked up a 02' Z28 coupe with 80k on it and parted it out and will be swapping the LS1, 4L60E and Brakes from it into the Nova. I have sold off just about everything, but a few parts left.




Start of the Disassembly, I will be cleaning the Firewall and under body and painting it, Powder Coating the SubFrame.




Here are some of the parts that I have collected, Comp Cam, srping, retainers, pushrods, POL Tubulare upper/lower A-Arm, Hotchkis TVS suspension, LS2 Timing Chain and Gears, LS6 PCV Valley Cover, RetroLSX Oil Pan, LS6 pump, Edelbrock Headers, ARP Rod/Head Bolts, etc..








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Last edited by bczee; 08-03-2017 at 08:31 AM.
Old 11-06-2010 | 07:17 PM
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Default LS1 Engine update

I cleaned up the Short block, had the Heads freshend up, New Comp Springs (918's), retainer, push rods, LS2/7 Lifter, LS6 oil Pump (I ported it some).
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I used an old head bolt as a thread cleaner for the block
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Replaced the Rod bolts with ARP's
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Ported the pump just a bit to clean it up and take the sharp edges out..
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Use a full Tray, and used a BRP pick up tube Girdle to secure the Tube.
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I am using the RetroLSX oil pan, I check to make sure there was clearance. Came out to about 3/4",
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The RetroLSX Pan in place.
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Removed and Replaced the Timing Crank Gear, I had the correct tool to remove, but just used a longer bolt and the old gear to press it back into place.
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Replace the Cam (Thrumpr) and assembled the front. Checked the timing, it was 3 Degress advanced to much.. corrected that.
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Swapped over to the LS6 type of PCV and Valley Cover, since the block was a 02 (LS1/LS6) block, there was not cutting needed.
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Used new LS2/LS7 lifter and guildes, did the drill mod on them. Notice I cleaned up the top of the piston and deck, used some scott-brite.
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Got the heads back, secured them with GM gaskets and ARP Bolts.
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Checked the pattern on the valve.
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Painted the front cover Gray and insalled new seal and the balancer.
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Just about ready to go !
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Last edited by bczee; 11-07-2010 at 12:11 AM.
Old 11-06-2010 | 07:25 PM
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Default Sub Frame

I cleaned up the Sub Frame and had a buddy help me weld up all of the seam on the sub frame. I than had it blasted and Powder Coated. Started to assemble the sub frame with the suspension.

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Welded up sub frame.
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Sub Frame back from the Powder Coater.
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Installed the POL Lower A-Arms.
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Installed the POL Upper A-Arms attacked the steering rods and spindle.
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Last edited by bczee; 11-06-2010 at 11:32 PM.
Old 11-06-2010 | 07:32 PM
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Default Powder Coating Small parts..

I have one of the Eastwood Powder Coating Gun that I used for my Chevelle project. I have a spare oven to use.

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Finished parts.
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My first atempt at Calipers..
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Old 11-06-2010 | 07:42 PM
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Default Mounts and plates.

I build my own adapter plates out of 1/2" Aluminum, use Energy Suspension Short/Wide Poly Mounts, Picked up some SBC Frame stands as the 6cyl would not work.

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Had to shape around these area (both sides)
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Going with 1" set back, Since I was going to use Edelbrock Headers, I looked at the Edelbrock and took some guess-ta-ments and layed out the pattern.
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bolted up the mounts and stands
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Old 11-06-2010 | 07:56 PM
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DAMN dude ur doing an awesome job keep up the good work
Old 11-06-2010 | 09:59 PM
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Originally Posted by madmike9396
DAMN dude ur doing an awesome job keep up the good work
X2
Old 11-06-2010 | 10:44 PM
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Default Ebay LS1 Brake conversion kit

I ordered one of the Ebay LS1 Brake conversion kit. I came with everythng needed to mount the 4th Gen F-body brakes to the early GM Drum spindles.

I had to turn down the Drum brake hub. The kit had new bolts, bearing and seals along with the adapter plate.

Hub turned down, painted and mounted on the spindle. I will get some new slotted rotor later and since I don't have any extra 16" or 17" wheel.. I had to leave the rest of the brake parts off while I used the 15" wheels.
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The Adapter plate for the Caliper bracket.
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Tight fit.. but works
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Old 11-06-2010 | 11:08 PM
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Default Trial Test Fit

Time to drop the engine into the sub frame to do the final engine mount fitting to make sure nothing it in contact and that the mounts lines up with the frame stands. I know many have had problems with this (yes I did, but I resolve the issues).

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The through bolt was good in its alignement.. but the pan did make contact on the X-Member and the Alternator did also.. They were just making contact. To resolve the contact, I made some spacers and raised the frame stand 1/8". That made the Frame Stand and Engine Mount bolt mis-align now (as other have had this problem). I then oblonged the six bolt holes for the frame stands on the X-Member about 1/4" down/closer. This raising and moveing the Frame Stands closer together resolved the Throught Bolt mis-alignement.

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Distant from the Engine Flange to the PG X-member, it was going to be about 2" difference.
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Mounted up the Trans for a check of the Crossmember.
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Last edited by bczee; 11-06-2010 at 11:36 PM.
Old 11-06-2010 | 11:18 PM
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Default Transmission Crossmember

I picked up a TH400 Crossmember and started with that, since the PG one was not going to be easy to modify.

It was close !
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I made the frame rails level and then check the engine/trans tilt, just to see if I was in the ball park, I will do the final tilt adjustment later.

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It was close !
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but I had some contact near the pan and flange.
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So it was time for the cutting wheels and welder.
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Old 11-06-2010 | 11:24 PM
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Default Test Fix of the Edelbrock Headers

While I had the engine in place, I dropped in the headers to check out clearances.

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I did later install the steering box and there seems to be more than enough room all around. Fit seem great as they did on my Chevelle, which is the reason I when with Edelbrock again for my Nova.

That about does it for coming up to speed and where I am right now. Its been slow on the Firewall and under pan clean up.. it will be a while before I get that done.
Work and just Cruz'in around in the Chevelle, car shows and GTG are just seems to take up my time.

Once I get the paint on the firewall and bottom. I then will re-mount everything again for the final fitting and then continue with the rest of the accessories and wiring. Standby !
Old 11-07-2010 | 12:53 AM
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Love it. I wish I went with the hotchkis setup - or better yet sc&c - the first time I rebuilt my front end. I'll post the build on the x-body thread when I get to my computer (on the phone now)
Old 11-07-2010 | 01:09 AM
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WOW! lookin real nice man... i love novas
Old 11-07-2010 | 01:31 AM
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Ooooo... lots of pictures and it's about time a build thread popped up!!

Great work, keep it up!!!
Old 11-07-2010 | 10:26 AM
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Looks great, thats the first time I've seen someone use the Edelbrock headers. What are you planning to use for fuel delivery?

I've always wondered if a 4.2/4L60E swap out of a Trailblazer would fit in a 68-74. That would turn some heads.
Old 11-07-2010 | 02:46 PM
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what steering box you going with? now's a good time to go with a Lee unit (or 3rd gen f-body quick-ratio), rather than the POS stocker from 1971.
Old 11-07-2010 | 03:59 PM
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Thanks for the good word guys.. It funny, when I did my Chevelle, I had it pertty much all planed out.. With this Nova.. I kinda have an idea of what and how.. but nothing set for sure.. LOL

For the Fuel system, I think I am going to order a new tank, mod it for either a TanksINC unit or try using some other OEM sender/bucket/pump(and switching to a Walbro). Install an new 3/8" SS line where needed and use a 99+ FPR for filter and regulator.

Not sure about the steering box, if anything I'll just switch over to a OEM Quick Ratio box. but thanks for suggesting the Lee Unit.. I'll look around to see what I can find.

I can see that the project will be slowing down some now as I have to get the Trans refreshed and find a 12 bolt or something and the list goes on.. but I hope to get the firewall and under body painted soon so that I can get it back togehter and work on the accessories and wiring.

I don't see why with a little work the 4.2/4L60E would fit.. just have to work around the pan..

Last edited by bczee; 03-05-2012 at 08:26 PM.
Old 11-07-2010 | 05:37 PM
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A Trailbazer drive shaft (not the long version) will fit if you go with a Currie 9" housing and chunk. The 3 inch factory aluminium drive shafts in Chevy Trailblazers are pretty stout, been running one for about a year now. Have to change rear U-joint to snap ring style to fit rearend yoke.

Looking good!

Last edited by 70Nova SS; 11-08-2010 at 06:20 PM.
Old 11-08-2010 | 08:05 AM
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Which control arms are you using? Im getting ready to look into some for my 69 pro street
Old 11-08-2010 | 10:02 AM
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70NovaSS.. thanks for the tip..but i've sold off the Camaro Drive Shaft. was just going to get one made up.

nhra crazy - The tubular A-Arm's are from Performance Online (POL)... They seem to be ok... but I'll find out down the road if they hold up and work ok.

This project seem to be done one step at a time and designing it as I go LOL...


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