olds v8 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

66pnl · 06-12-2014, 12:49 PM

I know the olds diesel was available in the late 70's trucks but was the gas version also an option. I was told by a couple differant guys that their trucks came from the factory with the gas motors. Were they bs'n me or was it an option. I did some searching but didn't come up with any thing.

Old Truck Man · 06-12-2014, 01:29 PM

As far as I know there where not any factory gas oldsmobile engines factory installed in the square cabs. Now in the late fifties there where Pontiac ,Buick & a few Oldsmobile engines installed in GM trucks. I once installed a 260 gas olds into a 77 GMC Pk. it got good fuel economy but didn't have much power.

naphtali5725 · 06-12-2014, 06:29 PM

I don't think there were ever gas olds engines in them...
but you can put olds engines in them pretty easy... i'm putting a 455 in my 86...

**Corts60** · 06-12-2014, 07:19 PM

It didn't come from the factory that way, but it did come from the dealer that way. What happened very often was that the original Olds diesel was so troublesome, dealers would replace them under warranty with an Olds gas engine because it was a direct replacement.

mrolds88 · 06-12-2014, 09:15 PM

Externally the Olds diesel was identical to the Olds small block gas engines. None of the trucks were Olds gas from the factory. The good part is that everything from the 260 to the 455 will bolt in.

Tx Firefighter · 06-12-2014, 09:20 PM

Quote:

Originally Posted by Corts60

It didn't come from the factory that way, but it did come from the dealer that way. What happened very often was that the original Olds diesel was so troublesome, dealers would replace them under warranty with an Olds gas engine because it was a direct replacement.

Exactly. There's a pile of trucks running around with 307 Olds engines due to diesel failures back down the line.

mrolds88 · 06-13-2014, 12:49 AM

The Olds diesels started in 78 or 79. If they were replaced under warranty they had to be replaced with a 260, 350 or 403. It would have probably been a 350. Because the only Olds engine with less power than the 350 diesel could have only been the 260. The later 350 diesels were better. They were marked DX on the side of the block and had less failures. They could have been replaced with the 307's under warranty.

66pnl · 06-13-2014, 12:56 AM

Right on, thanks for all the info guys.

S10Fan · 06-13-2014, 05:56 AM

I had an Olds 98 with a diesel in the late 70's, you don't want one of those motors. I believe those era diesel motors would fail as a boat anchor.

As mentioned above though, I've seen a couple squares with Olds (gas) motors, none were factory according to the owners.

06-12-2014, 12:49 PM	#1
66pnl Registered User Join Date: Mar 2014 Location: Eagle creek or Posts: 108	olds v8 I know the olds diesel was available in the late 70's trucks but was the gas version also an option. I was told by a couple differant guys that their trucks came from the factory with the gas motors. Were they bs'n me or was it an option. I did some searching but didn't come up with any thing. __________________ http://67-72chevytrucks.com/vboard/s...d.php?t=620707

06-12-2014, 01:29 PM	#2
Old Truck Man Registered User Join Date: Feb 2014 Location: Pocahontas Arkansas Posts: 684	Re: olds v8 As far as I know there where not any factory gas oldsmobile engines factory installed in the square cabs. Now in the late fifties there where Pontiac ,Buick & a few Oldsmobile engines installed in GM trucks. I once installed a 260 gas olds into a 77 GMC Pk. it got good fuel economy but didn't have much power.

06-12-2014, 06:29 PM	#3
naphtali5725 Registered User Join Date: Mar 2012 Location: NC Posts: 1,101	Re: olds v8 I don't think there were ever gas olds engines in them... but you can put olds engines in them pretty easy... i'm putting a 455 in my 86... __________________ My build thread... http://67-72chevytrucks.com/vboard/s...d.php?t=515829 Disabled Veteran 82nd Airborne Division Operations: Desert Shield, Desert Storm, and Uphold Democracy

06-12-2014, 07:19 PM	#4
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: olds v8 It didn't come from the factory that way, but it did come from the dealer that way. What happened very often was that the original Olds diesel was so troublesome, dealers would replace them under warranty with an Olds gas engine because it was a direct replacement. __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)

06-12-2014, 09:15 PM	#5
mrolds88 Registered User Join Date: Jul 2011 Location: WV Posts: 946	Re: olds v8 Externally the Olds diesel was identical to the Olds small block gas engines. None of the trucks were Olds gas from the factory. The good part is that everything from the 260 to the 455 will bolt in. __________________ 72 GMC C2500 402/Th400 first truck (still have) 77 GMC C3500 CC dually Sold 70 C50 dump truck "Rusty" 87 K10 Suburban Sold 93 K2500 xcab 6.5TD 96 GMC K2500 Suburban 6.5 TD

06-13-2014, 12:49 AM	#7
mrolds88 Registered User Join Date: Jul 2011 Location: WV Posts: 946	Re: olds v8 The Olds diesels started in 78 or 79. If they were replaced under warranty they had to be replaced with a 260, 350 or 403. It would have probably been a 350. Because the only Olds engine with less power than the 350 diesel could have only been the 260. The later 350 diesels were better. They were marked DX on the side of the block and had less failures. They could have been replaced with the 307's under warranty. __________________ 72 GMC C2500 402/Th400 first truck (still have) 77 GMC C3500 CC dually Sold 70 C50 dump truck "Rusty" 87 K10 Suburban Sold 93 K2500 xcab 6.5TD 96 GMC K2500 Suburban 6.5 TD

06-13-2014, 12:56 AM	#8
66pnl Registered User Join Date: Mar 2014 Location: Eagle creek or Posts: 108	Re: olds v8 Right on, thanks for all the info guys. __________________ http://67-72chevytrucks.com/vboard/s...d.php?t=620707

06-13-2014, 05:56 AM	#9
S10Fan Old Heap Driver Join Date: Mar 2008 Location: Newport News, Va Posts: 2,642	Re: olds v8 I had an Olds 98 with a diesel in the late 70's, you don't want one of those motors. I believe those era diesel motors would fail as a boat anchor. As mentioned above though, I've seen a couple squares with Olds (gas) motors, none were factory according to the owners. __________________ _____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver.



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