6.5 L internally or externally balanced? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vince1 · 07-28-2019, 10:57 AM

I had a question from someone who came across a 6.5 L engine in a 92? Suburban. He wants to know whether it is internally or externally balanced. I thought someone here would know.

He said it is a gas engine. I didn't even know they made one that size.

**truckster** · 07-28-2019, 11:44 AM

The 6.5 is a diesel engine. It replaced the 6.2 in 1992. I believe it's externally balanced.

The 396 BBC would have been roughly 6.5 liters, but those weren't offered in 1992, and they were never classified using the metric system (at least not in the US).

Bigdav160 · 07-28-2019, 04:53 PM

I don't remember a lot of engine choices in a 1992 Suburban.
5.7L in the 1/2 ton
7.4L gas in the 3/4 ton and
6.5L TD in a 3/4 ton

vince1 · 07-28-2019, 05:53 PM

I guess he will look at the block number. Maybe someone changed it out from a diesel. He said on the same decal as the 6.5 it shows vacuum line routing. I think he said it has TBI.

**truckster** · 07-28-2019, 06:32 PM

If it has a distributor, it's either a 5.7 (350) or a 7.4 (454). That might be the easiest way to tell if he's not really familiar with engines.

Tom · 07-30-2019, 05:05 PM

Quote:

Originally Posted by truckster

If it has a distributor, it's either a 5.7 (350) or a 7.4 (454). That might be the easiest way to tell if he's not really familiar with engines.

Or spark plugs

vince1 · 07-30-2019, 06:39 PM

He's had lots of 350's but just thought with the 6.5 decal that maybe they made one he didn't hear about. I don't know if he even has it home yet to take a good look at it but I think we can assume it is a 350.

**truckster** · 07-30-2019, 07:57 PM

If the engine has been replaced it could be almost anything. I had a 92 Buick Estate Wagon that I left the diesel badges on when I replaced it with an Olds 455. It surprised a lot of people.

07-28-2019, 10:57 AM	#1
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,166	6.5 L internally or externally balanced? I had a question from someone who came across a 6.5 L engine in a 92? Suburban. He wants to know whether it is internally or externally balanced. I thought someone here would know. He said it is a gas engine. I didn't even know they made one that size. Last edited by vince1; 07-28-2019 at 11:09 AM.

07-28-2019, 11:44 AM	#2
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,841	Re: 6.5 L internally or externally balanced? The 6.5 is a diesel engine. It replaced the 6.2 in 1992. I believe it's externally balanced. The 396 BBC would have been roughly 6.5 liters, but those weren't offered in 1992, and they were never classified using the metric system (at least not in the US). __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson Last edited by truckster; 07-28-2019 at 11:52 AM.

07-28-2019, 04:53 PM	#3
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: 6.5 L internally or externally balanced? I don't remember a lot of engine choices in a 1992 Suburban. 5.7L in the 1/2 ton 7.4L gas in the 3/4 ton and 6.5L TD in a 3/4 ton __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

07-28-2019, 05:53 PM	#4
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,166	Re: 6.5 L internally or externally balanced? I guess he will look at the block number. Maybe someone changed it out from a diesel. He said on the same decal as the 6.5 it shows vacuum line routing. I think he said it has TBI.

07-28-2019, 06:32 PM	#5
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,841	Re: 6.5 L internally or externally balanced? If it has a distributor, it's either a 5.7 (350) or a 7.4 (454). That might be the easiest way to tell if he's not really familiar with engines. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

07-30-2019, 06:39 PM	#7
vince1 Registered User Join Date: Jan 2013 Location: Calgary Alberta Posts: 1,166	Re: 6.5 L internally or externally balanced? He's had lots of 350's but just thought with the 6.5 decal that maybe they made one he didn't hear about. I don't know if he even has it home yet to take a good look at it but I think we can assume it is a 350.

07-30-2019, 07:57 PM	#8
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,841	Re: 6.5 L internally or externally balanced? If the engine has been replaced it could be almost anything. I had a 92 Buick Estate Wagon that I left the diesel badges on when I replaced it with an Olds 455. It surprised a lot of people. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson Last edited by truckster; 07-30-2019 at 08:35 PM.



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