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1970 El Camino 5.3 build

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Old 12-26-2010, 08:30 PM
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Default 1970 El Camino 5.3 build

a little bit of backstory:
I got the car in the spring of 2009, it was from near Rapid City, South Dakota, then it was hauled north into Canada

Here is how it looked when i got it


The options then were to either park it until i had the time and money to do the body work that was needed or either do a quick paint job on it and drive it around until painting it was in the budget

Option number 2 was chosen.

The car had a pretty much stock 350 except for an edelbrock intake. and a TH350 transmission.

This is how it has looked since then


In the spring of 2010, I bought a 1999 Silverado 1500 with a 5.3 and a 4l60e that was rolled in 2005 with 75,000 miles.


In September, I had time to pull the motor, trans, and wiring harness out of the truck.










The original plan when i bought the truck was to do a weekend swap and during the summer get the motor and transmission into the car and drive it around. I then got a killer deal on some lightly used trick flow heads and plans changed.

In early December i finally had the time to start actually working on this.


Old 12-26-2010, 08:38 PM
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I installed a comp cam that is 228/230, then cleaned up the decks and the heads, and installed them.








At this point I ran out of parts to work on the motor so i spent some time getting the unneeded wires out and clean it up a little bit.



This is what i was starting with and after a few hours i got it down to this


From here it was a lot of sitting on the floor looking at pin outs and pulling out what i don't need.

After doing that until my fingers hurt, i decided to get the old motor and trans out of the car.






From here i was busy writing finals for a couple of weeks and during this time most of the parts that i needed arrived.
Old 12-26-2010, 08:44 PM
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When i got time to get back on this project, this is what was there when i walked in the shop




One of those boxes was containing my new transmission, a TKO 500


installed my new timing chain and oil pump


put the front cover and balancer on and moved to the rod bolts


From here i cleaned up the valve covers and then have been busy with other things
Old 12-26-2010, 09:29 PM
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Looking good.....My son wants a elky just like this.
Old 12-27-2010, 04:41 AM
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Nice... I've been contemplating an El Camino for my next project. Keep the updates coming.
Old 12-28-2010, 05:18 PM
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new rockers installed


set the engine back in for one of what will probably be many test fits


Lets say that ground clearance may be an issue


Fortunately it was an issue that i was expecting so the oil pan got marked and the motor got taken back out.

my brother got tasked the job of making it shorter




about an inch and a half was removed


The bottom was set back on and everything was pretty close except for a gap at the back that needed a corner ground down to close it up




He welded the outside, then it was filled with solvent to check for leaks, there was one one the side of the pan, so the whole inside of the pan get welded too

and the final product
Old 12-28-2010, 05:34 PM
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Cool Build.How much does the El Camino weigh???
Old 12-28-2010, 08:41 PM
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Originally Posted by MillerTime85
Cool Build.How much does the El Camino weigh???
That i do not know but i would guess between 3300 and 3600lbs
Old 12-28-2010, 08:47 PM
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nice build.. Why didnt u paint the bay?
Old 01-04-2011, 11:40 PM
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Originally Posted by 217zenki
nice build.. Why didnt u paint the bay?
It is one of the things on the list to do, it will get cleaned up, then painted flat black
Old 01-05-2011, 01:51 PM
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The oil pick up tube also got shortened


While my brother was doing all that, I was finishing up pulling wires from the harness. Every connector was labeled as to where it goes and every pin was labeled for its location on the PCM


Here is the box of wires that got removed


Put the LS1 intake on.


New Bosch 30 lb injectors got put into my Aeromotive fuel rails





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Old 01-05-2011, 01:57 PM
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Since the truck injectors take a different connector than the LS1 injectors i had to solder the old wires to the injector plug pigtails that i got.


Also ran the wires to the throttle body to start remaking my harness


I was happy with how that was looking, so i put the coil packs in place


I didnt really like how that looked, and after a lot of staring at them, so i just cut the plugs off and hard wired them on.






The plugs will get soldered on under the dash, just in case i ever want to add a two step.

I intend to have all the wires come to the back of the intake, to which they will go through the firewall to the PCM which will be mounted inside.


This is only about half of them and they are already starting to add up.
Old 01-05-2011, 02:13 PM
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Thats starting to look really nice. I'm assuming you're going to run that stock coil arrangement. I have the same ones and just don't know if I can stand to look at them. Are you considering covers or relocating them or ????
Old 01-05-2011, 02:15 PM
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Originally Posted by boostnut
Thats starting to look really nice. I'm assuming you're going to run that stock coil arrangement. I have the same ones and just don't know if I can stand to look at them. Are you considering covers or relocating them or ????
I'm going to leave them where they are. I think they will look not half bad once i clean the coils and brackets up and run the wires in some loom
Old 01-18-2011, 03:03 PM
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As you can see in this picture there was some interference between the throttle body and the water pump outlet


the solution for this was to pull the outlet out, put a frost plug in and then drill the front so it is the same as an f body water pump.


I installed the flywheel and the bellhousing to check the runout, is was not within the spec of the transmission so offset dowels will be needed


Then i removed the seat and the interior

He was slowing me down a bit

The location of the transmission hump was marked


Then the hole was cut in the floor




Put the paper template on the floor to mark where to cut


And cut along the line


I also have done the relocation of my front accessories but forgot my camera at home so i will add the pictures in my next update
Old 01-18-2011, 03:47 PM
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looking good....why did you go with a tko 500 and not just a t56.....im gonna go with a stick at some point in time ...probably a t56....
Old 01-18-2011, 03:49 PM
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Originally Posted by 70cartruck
looking good....why did you go with a tko 500 and not just a t56.....im gonna go with a stick at some point in time ...probably a t56....
Because i'm using a bench seat and from what i read with the t56 the shifter would have been in the middle of my seat
Old 01-18-2011, 03:53 PM
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hmmmm....i see...yea im factory bench seat too and like it.....

who is gonna do the tune on it...and what motor mounts did you end up using...just curious...i used brp's..they worked great..?
Old 01-18-2011, 06:31 PM
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Originally Posted by 70cartruck
hmmmm....i see...yea im factory bench seat too and like it.....

who is gonna do the tune on it...and what motor mounts did you end up using...just curious...i used brp's..they worked great..?
I'm going to tune it with HP tuners

I am using Edelbrock's adapter plates
Old 01-18-2011, 06:47 PM
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Very nice.
Im building a cruiser 350 but with a nice interior/dash/paint then slowly building the suspension and chassis.

I want a BBC tho. Big cubes seemed the way to go


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