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Old 02-18-2019, 05:49 PM   #1
landarts
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99 2 Door Tahoe - help with motor question

I am active over on the 67-72 forum and have a question that is out of scope of knowledge on motors. I have the opportunity to purchase a 1999 2 Door Tahoe that has 117K mileage in very clean shape with automatic transmission, no motor in the vehicle. If I was to buy a used motor to drop in what would be the way to go just for a daily driver. Current motor is 5.7 Vortec, would a newer 5.3L match up to the current computer or does that need to be changed out? Thanks!
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69 K10 from the Field

Fix and Sale 72 GMC 3/4 ton 4x4 K2500

The "Fixrupr" build thread

Oh yeah I forgot to mention I have a problem collecting these trucks, as for now I have 7 trucks.

72 Cheyenne 1/2 ton " FIXRUPR " - now daily driver
67 c20 all original paint
69 K10 Custom package 4x4 537 paint code White and Light Blue (69 K10 from the field)
67 GMC 4x4 1/2 ton number 100 off the assembly line all original paint
72 Cheyenne K10 4x4 557 paint code Dark Olive and Light Olive
67 1/2 ton 4x4 short step side - will be a long term project
72 3/4 Ton GMC 4x4 - SOLD
68 C25 GMC LWB - SOLD
68 C10 LWB - SOLD
67 C20 - SOLD
71 Blazer - SOLD
72 1/2 ton 4x4 - SOLD
70 CST daily driver - SOLD
72 suburban - SOLD
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Old 02-18-2019, 07:02 PM   #2
95 S_Trucker
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Re: 99 2 Door Tahoe - help with motor question

Ask a mod to move this to the 88-98 GMT400 section

The only direct fit would be a vortec 5.0/5.7 from 96-02.

A 5.3 would require custom engine mounts, exhaust, new wiring and pcm.
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Old 02-18-2019, 07:33 PM   #3
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Re: 99 2 Door Tahoe - help with motor question

I have a 99 2dr and I bought a brand new 5.7l L31R replacement motor with a 3yr, 100k mile warranty for $1750 shipped to my door. I would recommend that route so you donít have to mess with wiring and getting the LS to fit.

Radley Chevrolet is the place. Hereís the link but the price went up just a smidge.

https://www.ebay.com/itm/GM-OEM-NEW-...-/301567296304
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Old 02-18-2019, 09:00 PM   #4
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Re: 99 2 Door Tahoe - help with motor question

Quote:
Originally Posted by EVRLET View Post
I have a 99 2dr and I bought a brand new 5.7l L31R replacement motor with a 3yr, 100k mile warranty for $1750 shipped to my door. I would recommend that route so you donít have to mess with wiring and getting the LS to fit.

Radley Chevrolet is the place. Hereís the link but the price went up just a smidge.

https://www.ebay.com/itm/GM-OEM-NEW-...-/301567296304
X2, the 5.7 Vortec is a good motor, especially a new one.
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Old 02-19-2019, 11:06 AM   #5
landarts
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Re: 99 2 Door Tahoe - help with motor question

Just curious why they moved it to the 88-98 forum when I stated it was a 99? Not a big deal. Just curious.
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69 K10 from the Field

Fix and Sale 72 GMC 3/4 ton 4x4 K2500

The "Fixrupr" build thread

Oh yeah I forgot to mention I have a problem collecting these trucks, as for now I have 7 trucks.

72 Cheyenne 1/2 ton " FIXRUPR " - now daily driver
67 c20 all original paint
69 K10 Custom package 4x4 537 paint code White and Light Blue (69 K10 from the field)
67 GMC 4x4 1/2 ton number 100 off the assembly line all original paint
72 Cheyenne K10 4x4 557 paint code Dark Olive and Light Olive
67 1/2 ton 4x4 short step side - will be a long term project
72 3/4 Ton GMC 4x4 - SOLD
68 C25 GMC LWB - SOLD
68 C10 LWB - SOLD
67 C20 - SOLD
71 Blazer - SOLD
72 1/2 ton 4x4 - SOLD
70 CST daily driver - SOLD
72 suburban - SOLD
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Old 02-19-2019, 11:31 AM   #6
EVRLET
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Re: 99 2 Door Tahoe - help with motor question

Because technically, the 99 2dr Tahoe body style is what is referred to as OBS, Older Body Style, or GMT400. This is the same body style as the 88-98. The 99-06 is what they call the NBS, New Body Style, or GMT800 and the 2dr Tahoe didnít come in this style.
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Old 02-19-2019, 11:03 PM   #7
landarts
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Re: 99 2 Door Tahoe - help with motor question

Here is a picture of the Tahoe I picked up.
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69 K10 from the Field

Fix and Sale 72 GMC 3/4 ton 4x4 K2500

The "Fixrupr" build thread

Oh yeah I forgot to mention I have a problem collecting these trucks, as for now I have 7 trucks.

72 Cheyenne 1/2 ton " FIXRUPR " - now daily driver
67 c20 all original paint
69 K10 Custom package 4x4 537 paint code White and Light Blue (69 K10 from the field)
67 GMC 4x4 1/2 ton number 100 off the assembly line all original paint
72 Cheyenne K10 4x4 557 paint code Dark Olive and Light Olive
67 1/2 ton 4x4 short step side - will be a long term project
72 3/4 Ton GMC 4x4 - SOLD
68 C25 GMC LWB - SOLD
68 C10 LWB - SOLD
67 C20 - SOLD
71 Blazer - SOLD
72 1/2 ton 4x4 - SOLD
70 CST daily driver - SOLD
72 suburban - SOLD
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Old 02-20-2019, 06:44 AM   #8
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Re: 99 2 Door Tahoe - help with motor question

Ride looks good. Love the 2door Tahoes/Yukons!
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