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what is the easiest v8 swap

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Old 03-23-2009, 12:07 AM   #1
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what is the easiest v8 swap

I am just wondering i own a 99 s10 4.3L and I am just wondering out of the v8's what is the easiest swap and how much do they usally cost.
Old 03-23-2009, 12:45 AM   #2
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Re: what is the easiest v8 swap

if you want to keep it fuel injected, the easiest swap is to find a 96'-04' vortec 5.0L or 5.7L complete engine. you can use your v6 wiring harness and computer, all your sensors will plug up the same, and your front accessories from your 4.3 will bolt right up to the front of the vortec v8, also the transmission will bolt right up too... you will have to buy the swap motor mounts, you will have to recess/move the radiator (use a corvette radiator) and A/C condensor foreward and run some electric fans. you will also have to either use the v8 wiring harness, or just cut the injector part of the v8 wiring harness and splice it into your v6 harness, and then have your computer reflashed for a v8. if your going to do it yourself, good, you will save tons on labor cost. you can usually pick up a good running vortec 305/350 for under $650. its hard to say how much you will spend, becuase it all depends on how crazy you get, and what you pay for things. anywhere from free to about 3k is a normall price range. i had a chance to pick up a vortec 350 with 94,xxx miles on it for $400, had a buddy who already had motor mounts that he was going to use, but didnt... coulda got those free, he also had a wrecked '94 z28 camaro i could have gotten the radiator out of for free (i did use the electric fans from it though, there on my truck now), all i would have had to find was the complete engine harness, or just the injector part and i woulda probly had a little over $1,000 once the swap was pretty much complete.
Old 03-23-2009, 12:58 AM   #3
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Re: what is the easiest v8 swap

ok what about the 5.3L is that a harder swap.
Old 03-23-2009, 06:49 PM   #4
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Re: what is the easiest v8 swap

ok sorry I am pretty new to this engine swap stuff, I am just wondering if anyone can tell me what are the 5.0L engines found in and also what are the 5.7L engines found in and also is that 5.7L the same as the ls1 motor.

Thank you:

Mark
Old 03-23-2009, 07:15 PM   #5
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Re: what is the easiest v8 swap

Quote: Originally Posted by xtremewhite99
ok sorry I am pretty new to this engine swap stuff, I am just wondering if anyone can tell me what are the 5.0L engines found in and also what are the 5.7L engines found in and also is that 5.7L the same as the ls1 motor.

Thank you:

Mark
5.0s and 5.7s were found in the fullsizes, silverados, sierras, conversion vans, yukons, suburbans, tahoes. etc.

the ls1 is an all aluminum 5.7 found in corvettes? and camaros, ws6 firebird, etc. going to run alot more than a cast 5.7
Old 03-23-2009, 10:22 PM   #6
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Re: what is the easiest v8 swap

ok does anyone know what is the hp on those 5.0L and the 5.7L and how long to these take to install on say my 99 s10 4.3L.
Old 03-23-2009, 11:30 PM   #7
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Re: what is the easiest v8 swap

HP varies with every engine, Ive driven a 1st gen truck in on Friday night after work and was driving it on Sunday with a V8, I had someone else who was also mechaically inclined helping.

But youll most likely need a lot more time if its your first time.
Old 03-24-2009, 01:00 AM   #8
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Re: what is the easiest v8 swap

ok is there shops that also do these installs, also say what do a late model 5.7 put out for hp
Old 03-24-2009, 01:01 AM   #9
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Re: what is the easiest v8 swap

the LS1 5.7L and conventional style 5.7L are two completely different motors. if your worried about cost, just stay away from the LSX series engines and focus on finding a vortec v8 such as the vortec 5.0L and vortec 5.7L.

the vortec 5.0 is 305 cubic inches and put out 220 horsepower, the vortec 5.7 is 350 cubic inches and put out 250 horsepower.

if you decide to go with an older style (non-vortec) 305 or 350... then expect the 305 (stock) to have somewhere around 140-160 horsepower, and expect the 350 (stock, most common configuration) to have about 190 horsepower.

the vortec line of v8's began showing up in the full size trucks/vans/suv's in 1996. they stopped putting them in the trucks/suv's in 1999, but continued putting them in the fullsize vans up untill 2004. in mid year 1999 (new body style trucks/suv's) they started using the LSX series motors.
Old 07-30-2010, 10:42 AM   #10
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Re: what is the easiest v8 swap

Did the vortec 5.7s use a throttle body?
Old 07-30-2010, 12:47 PM   #11
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Re: what is the easiest v8 swap

Quote: Originally Posted by jesussdanner
Did the vortec 5.7s use a throttle body?
of course they do, all fuel injected engines use a throttle body

but they are not throttle body injected if thats what youre asking
Old 07-30-2010, 11:54 PM   #12
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Re: what is the easiest v8 swap

that's what I think i'm going to try and do to my '93 next summer is swap the tired old 4.3 in it for my '84 K10's 350 and turn it into a TBI once I upgrade some of the internals. hoping that makes for an easier swap than trying to harness it up as a vortec. Anyone have much experience with that year putting it in a 4x4 and how hard that would be for a beginner?
Old 01-30-2014, 05:46 PM   #13
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Re: what is the easiest v8 swap

What about in a 2003 w a 2.2? whats the best way to go?
Old 01-30-2014, 07:40 PM   #14
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Re: what is the easiest v8 swap

Almost nothing from a 2.2 will work with a V8. The wiring, computer, trans, radiator, and mounts all would need to be changed.
Old 01-30-2014, 08:47 PM   #15
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Re: what is the easiest v8 swap

The easiest swap is to sell your s10 and get a silverado.
Old 01-30-2014, 09:53 PM   #16
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Re: what is the easiest v8 swap

I forgot all about this xtremewhite99 dude and his every post beginning with "I am just wondering i own a 99 s10 4.3L and I am just wondering..."
Old 01-31-2014, 12:42 PM   #17
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Re: what is the easiest v8 swap

There would be no reason to waste time swapping in a 5.0L vortec IMO, with that being said the "easiest" swap in a 96+ 4.3 truck is the Vortec 5.7.
Old 02-14-2014, 04:16 PM   #18
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Re: what is the easiest v8 swap

Is it best to try and stay in the same year range due to computers and such?
Old 02-18-2014, 11:42 PM   #19
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Re: what is the easiest v8 swap

Ok, new question: I have a '91 2wd longbed with a 4.3 TBI. I've heard whispers of it being an easy swap to a SBC TBI.. Any ideas as to how easy it really is? I ask mainly because I have a carbureted 305 with the H.O. heads and a one-piece rear main. I also have access to a junkyard for cheap, so I could probably find a TBI manifold. So I guess my question is: what are the differences?
Old 02-25-2014, 11:20 AM   #20
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Re: what is the easiest v8 swap

Quote: Originally Posted by robroyoldboy
Ok, new question: I have a '91 2wd longbed with a 4.3 TBI. I've heard whispers of it being an easy swap to a SBC TBI.. Any ideas as to how easy it really is? I ask mainly because I have a carbureted 305 with the H.O. heads and a one-piece rear main. I also have access to a junkyard for cheap, so I could probably find a TBI manifold. So I guess my question is: what are the differences?
Pretty easy swap but again there is zero reason to ever swap to a 305ci v8.
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