Okay so I picked up a 96 Tahoe today with a cracked block. Thinking i'm just going to swap another engine in instead of finding a block and putting the old one back together. Anyways, I was wondering what other 5.7's I could use. Does it have to be the Vortec or can I put in an LS1 from a Camaro? If using the LS1 would it be a straight bolt in or would I have to use the LS1 Ecu and Wiring??
5.7 Engine Swap
- Thread starter project96
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1weasel
Full Access Member
With enough money and time, anything can be put in. But I do believe that the ECU and wiring are different between the two motors.
blackcoffee
O.G. Black.
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Look into an HT383E.
rucr8z2
Full Access Member
bai78
Surviving
Drop in a big block 
Seriously, if you are going to do an LS swap, you will need the entire wiring harness & ecu to have a chance at making this work. It is well worth the effort though.
Seriously, if you are going to do an LS swap, you will need the entire wiring harness & ecu to have a chance at making this work. It is well worth the effort though.
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HT383E: haha oh wow I don't have that much money But that would be awesome. I'm just a laid off 21 year old that has some time but not alot of money that wants his truck up n running before the snow hits 
I found a 5.7 Vortec for $1000 without accessories but they never have them in stock...
I also found a 95 non-Vortec for $400...Can I put my intake manifold & head's on this block to make it Vortec?
I found a 5.7 Vortec for $1000 without accessories but they never have them in stock...I also found a 95 non-Vortec for $400...Can I put my intake manifold & head's on this block to make it Vortec?
961500
Is it 2012 yet?
the 95 will not work with out modifications the 96 took a big step up in ecu control over the motors. Two areas of concern would be the crank sensor and also the fuel delivery. I also believe they use a diffrent style water pump. Stick with a 96-99 vortec 5.7 will lessen the headache and cost. Gm makes a reman it may be in your budget.
bowtiefreak
No Quarter
The HT383E is anywhere from $4K and up....but it is plug and play...so they say. I run one and a tune was REQUIRED to bring it to life. I picked up almost 100 tq and like 60 hp after a tune on that thing. Keep in mind it was a real dyno session though.
It makes nice power though, at the wheels I think I am making 280hp and 380tq, after the 24% drivetrain loss that is about 350 hp and 500tq at the flywheel. not to shabby if you ask me. Mine will melt the back tires too (35x12.5), break loose, chirp oon a down shift sometimes too. Very reliable too thus far. All in all I am pleased with it
It makes nice power though, at the wheels I think I am making 280hp and 380tq, after the 24% drivetrain loss that is about 350 hp and 500tq at the flywheel. not to shabby if you ask me. Mine will melt the back tires too (35x12.5), break loose, chirp oon a down shift sometimes too. Very reliable too thus far. All in all I am pleased with it
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blueflamed03
Elite Member
purchase a new longblock, and if you want more power, just to a cam/spring swap before installation.
So I've been on the hunt all day looking for a motor and I agree with 961500 that I should stick with the original motor that came out of the truck just for an easier and less stressful swap. I found a 96 5.7 short block on Craigslist today but I pulled off my heads and found that they are going to need to be machined because they've been sitting for awhile. I think after machining the heads, and all new gaskets I would run around $1000 anyways. So I located a 97 5.7 in another city for $1000cdn with 3month warranty which I guess is the best I'm going to find in short notice....wish me luck!
Miami-Yukon
'96 Z71 YUKON 2DR
I just bought a Remn from Advance Auto Parts.... complete long block, including valve covers, timing cover & oil pan installed.... comes with all the gaskets needed too!!!!
$1640 + tax..... PART NO. VCH4
They won't sell you it if you just ask them, so if you do tell them you want the exact part #, they will need your original blown motor as a core though....
Here is a pic... I should have it in and running this weekend, except I am gonna paint the block and heads Chevy Orange.... I like it that way!!! Old school!! lol
OH and it somes with a BIRTH CERTIFICTE!!! Which I'm hanging up in the garage when it's installed
$1640 + tax..... PART NO. VCH4
They won't sell you it if you just ask them, so if you do tell them you want the exact part #, they will need your original blown motor as a core though....
Here is a pic... I should have it in and running this weekend, except I am gonna paint the block and heads Chevy Orange.... I like it that way!!! Old school!! lol
OH and it somes with a BIRTH CERTIFICTE!!! Which I'm hanging up in the garage when it's installed
Yoo that's dope haha, what would they need my cracked block as a core for but yeah if I had an extra $1000 and the time to wait I would pick that up, not a bad price at all actually. But I need this thing running before the snow hits because up here in BC, it can get pretty bad!
but yeah if I had an extra $1000 and the time to wait I would pick that up, not a bad price at all actually. But I need this thing running before the snow hits because up here in BC, it can get pretty bad!Hey guys, I picked up the motor the guy let it go for $795! Good deal I'd say but it is kind of rusty so I'm bustin all the rust off and giving it a coat of paint. Anyways, I noticed a few things different from this motor and the original motor in my truck. So I took down the casting number which was 10243880 and it said 5.7lg sgi. I read up and everywhere I look it's saying this is a Crate motor....Is this true? Cuz it came out of a 97 Savanna Van lol I don't know who would throw a Crate motor in a Savanna. But yeah let me know what I picked up....Thanks guys would appreciate the input!
