99 2 Door Tahoe - help with motor question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**landarts** · 02-18-2019, 05:49 PM

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!

95 S_Trucker · 02-18-2019, 07:02 PM

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.

EVRLET · 02-18-2019, 07:33 PM

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 don’t have to mess with wiring and getting the LS to fit.

Radley Chevrolet is the place. Here’s the link but the price went up just a smidge.

https://www.ebay.com/itm/GM-OEM-NEW-...-/301567296304

S10Fan · 02-18-2019, 09:00 PM

Quote:

Originally Posted by EVRLET

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 don’t have to mess with wiring and getting the LS to fit.

Radley Chevrolet is the place. Here’s 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.

**landarts** · 02-19-2019, 11:06 AM

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

EVRLET · 02-19-2019, 11:31 AM

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 didn’t come in this style.

**landarts** · 02-19-2019, 11:03 PM

Here is a picture of the Tahoe I picked up.

**Palf70Step** · 02-20-2019, 06:44 AM

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

02-18-2019, 05:49 PM	#1
landarts landarts Join Date: May 2005 Location: Star, Idaho Posts: 1,375	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! __________________ Super Cheyenne aka the "Devil Cowboy" 71 K20 Idaho Edition 69 K10 from the Field 68 Second Chance Fix and Sale 72 GMC 3/4 ton 4x4 K2500 The "Fixrupr" build thread 72 Cheyenne 1/2 ton " FIXRUPR " - daily driver 67 C20 all original paint 71 K20 Custom 4x4 (Idaho Edition) 72 K20 GMC Super Custom 4x4 72 K20 Custom Deluxe 4x4 69 K10 Custom package 4x4 (69 K10 from the field) 72 K10 Custom 71 K10 Custom 72 K20 Custom Deluxe 4x4 72 K20 Crew Cab Project 71 GMC Jimmy CST 72 Blazer 70 Blazer

02-18-2019, 07:02 PM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	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.

02-18-2019, 07:33 PM	#3
EVRLET Registered User Join Date: Aug 2015 Location: Las Vegas NV Posts: 369	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 don’t have to mess with wiring and getting the LS to fit. Radley Chevrolet is the place. Here’s the link but the price went up just a smidge. https://www.ebay.com/itm/GM-OEM-NEW-...-/301567296304 __________________ Customization is what you want it to look like -- not what other people think it should look like

02-19-2019, 11:06 AM	#5
landarts landarts Join Date: May 2005 Location: Star, Idaho Posts: 1,375	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. __________________ Super Cheyenne aka the "Devil Cowboy" 71 K20 Idaho Edition 69 K10 from the Field 68 Second Chance Fix and Sale 72 GMC 3/4 ton 4x4 K2500 The "Fixrupr" build thread 72 Cheyenne 1/2 ton " FIXRUPR " - daily driver 67 C20 all original paint 71 K20 Custom 4x4 (Idaho Edition) 72 K20 GMC Super Custom 4x4 72 K20 Custom Deluxe 4x4 69 K10 Custom package 4x4 (69 K10 from the field) 72 K10 Custom 71 K10 Custom 72 K20 Custom Deluxe 4x4 72 K20 Crew Cab Project 71 GMC Jimmy CST 72 Blazer 70 Blazer

02-19-2019, 11:31 AM	#6
EVRLET Registered User Join Date: Aug 2015 Location: Las Vegas NV Posts: 369	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 didn’t come in this style. __________________ Customization is what you want it to look like -- not what other people think it should look like

02-19-2019, 11:03 PM	#7
landarts landarts Join Date: May 2005 Location: Star, Idaho Posts: 1,375	Re: 99 2 Door Tahoe - help with motor question Here is a picture of the Tahoe I picked up. Attached Images __________________ Super Cheyenne aka the "Devil Cowboy" 71 K20 Idaho Edition 69 K10 from the Field 68 Second Chance Fix and Sale 72 GMC 3/4 ton 4x4 K2500 The "Fixrupr" build thread 72 Cheyenne 1/2 ton " FIXRUPR " - daily driver 67 C20 all original paint 71 K20 Custom 4x4 (Idaho Edition) 72 K20 GMC Super Custom 4x4 72 K20 Custom Deluxe 4x4 69 K10 Custom package 4x4 (69 K10 from the field) 72 K10 Custom 71 K10 Custom 72 K20 Custom Deluxe 4x4 72 K20 Crew Cab Project 71 GMC Jimmy CST 72 Blazer 70 Blazer

02-20-2019, 06:44 AM	#8
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,082	Re: 99 2 Door Tahoe - help with motor question Ride looks good. Love the 2door Tahoes/Yukons! __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

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