So it starts...Gen III 5.3 Vortec into 51 Chevy - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 04-30-2008, 11:47 AM
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Woohoo!!!!!

Got a present today from the delivery man.
-Hook up harness this weekend
-hook up o2 sensors
-hook up guages, and it should be ready to go





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  #17 (permalink)  
Old 04-30-2008, 11:55 AM
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That looks real good. I'm starting to swap a 1997 Vortec 350 into my 70 Chevelle. I'm really excited for the better MPGs, and most likly more power then my 350 with blown rings
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Old 05-03-2008, 08:18 PM
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Ughh....Another Snag

Well, just realized today that the truck 5.3 manifolds are not going to work. Was about to get some flanges made with o2 bungs when I noticed the driver side manifold is right over the frame so there would be no way to hook the exhaust up to it.

The metal in the way I could cut, but beneath that is the frame of the car.

So I was wondering if f-body manifolds fit tighter or if there are any good suggestions for headers, or just any suggestions at all
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Old 05-03-2008, 08:41 PM
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Very awesome project. Only thing i know about f-body manifolds is that there tubular, so they would be easier to modify to fit if neccessary.
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Old 05-05-2008, 08:38 PM
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No updates???????
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Old 05-06-2008, 12:00 AM
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Ok an update ;-)

Well started on the wiring this weekend, got the majority of it done.

Also there are adapters to screw in to certain places, so that you can reuse your mechanical gauges, which is what I am doing. I'll post up part numbers for anyone interested.

As for the manifolds, I think I am going to try these, they seem like they would hug pretty tight and look pretty good
http://www.sandersonheaders.com/prod...roducts_id=191

There for S-10 swaps, but they may work

Thats about it for now, really the only things left are to finish the wiring, hook up headers so I can install o2 sensors, and hook the gauges up.

Oh yeah I had to get a MAF sensor, completely forgot until I started wiring, but got one on the way already.

I'll post up pics when I get a chance, I'm in the process of moving now too so progress may slow a little, hopefully not, I'm pretty anxious to start this beast
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Old 05-06-2008, 11:30 PM
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Change of plan

Actually I think I am going to order these headers instead
http://store.summitracing.com/partde...5&autoview=sku

I talked to someone with an ls1 in a 48 chevy coupe and he fitted f-body headers from Kooks Headers in his chassis, and his frame looks very similar to mine, so I'll probably try these first
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Old 05-09-2008, 09:20 PM
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Yes, there here



-Put headers on
-finish wiring
-hook up gauges
-fire it up
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Old 05-10-2008, 09:07 AM
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Gawd I LOVE this post!

Keep it going, please!
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Old 05-10-2008, 12:01 PM
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engine swap..........

Hi,i know its nit-picking,but WHY did you put that engine in,before derusting the engine compartment,and doing a paint job on it.????????????????????? you could have done a spray can paint job on that engine compartment, it would have looked better...,,,at least.
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Old 05-10-2008, 12:49 PM
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Quote:
Originally Posted by boatbob2
Hi,i know its nit-picking,but WHY did you put that engine in,before derusting the engine compartment,and doing a paint job on it.????????????????????? you could have done a spray can paint job on that engine compartment, it would have looked better...,,,at least.

You know, I was going to, but when I got going with the old motor out and the new one just sitting there, I got too anxious and just had to put it in
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Old 05-10-2008, 01:01 PM
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Passenger side on, drivers side in work

Passenger side is in





But drivers side would have fit perfect, but because of the location of my master cylinder underneath the floor, I can't install the header so I am going to go to the exhaust shop and see if they can't bend it some to clear the M/C



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Old 05-13-2008, 11:22 AM
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Sorry here's the latest update

Here is from Sunday:

Good news, got the headers in.
and I got it to start

Now for the bad news
I can get it started with starting fluid and sounds like a beast , but once the fluid is gone, it dies . So I am assuming I have spark since it runs off of the starting fluid.
Also sometimes it will start without any fluid for like half a second after sitting for a little bit.

Troubleshot:
-Can hear fuel pump kick on
-Can also hear injectors spray when the key is on
-MAF is hooked up
-have about 4-5 gallons in the fuel tank
-No trouble codes showing up
-ECM programmed by Wait4Me so I assume VATS is deleted

Also when it is running it doesn't stumble or anything, sounds like it would run really good, then it runs out of starting fluid and dies

Been troubleshooting all day

Oh yeah, had a video of first start up, but for some reason the camera didn't save it, but I'll try and get one when she starts runnin right


And here is what I found out today:

Well for the starting problem, I think I got it now. Since I could hear the injectors, I just assumed they were firing, well this morning, I took them out to watch them and sure enough, nothing came out, but it sounded like it was. So first thing that came to mind was clogged injectors.

So I went and borrowed an injector from the parts store, put it in, and sure enough that injector was firing, and I must have jarred another one free from all the movement, because now another one started going on the other side.

So I had two injectors shooting (new one, and one old one) and the motor wanted to start, just didn't have enough fuel I assume from just two injectors, but it definitely sounded like it wanted to fire, so I think that may be it.

Needless to say, now all 8 injectors are soaking in Seafoam as we speak, and I will probably reinstall them tomorrow morning and see what happens.

Hopefully this is it.....
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Old 05-16-2008, 09:47 AM
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Alright injectors back in and still no go.....

Ok I just checked pressure to the rail and when its priming its getting like 65 PSI and then after it clicks off its just under 60, probably about 55PSI, but then while cranking its getting about 65PSI to the rails.

I read somewhere that if the injectors get more 60PSI they won't fire. Can anyone verify this by chance?
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  #30 (permalink)  
Old 05-16-2008, 10:48 AM
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Alright, just replaced the regulator and now fuel pressure is at 58PSI while priming and while cranking, which is where I read it should be, but the injectors still are not firing.

Also I hooked a mulitmeter up to one of the injectors and they are getting 12v, don't know about pulses yet though, since I have no one to turn the key while I watch the meter
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