Point me to a replacement eBay carb to a 1969 i6 250 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Luke87gt · 07-13-2024, 05:06 PM

Hi guys,

I have heard good reviews on the replacement Rochester Monojet reproduction carbs on eBay. These things sell for around $80-120 with either a manual or electric choke.

Can someone point me to a reputable eBay dealer that sells these things.

Also, I notice that many of them on eBay are listed for 70-74 250 i6 c10. Is there any reason the carb would differ for a 1969 (I have a ‘69 c10 250) ?

Thanks

Luke

**Steeveedee** · 07-13-2024, 05:53 PM

It would likely be a different calibration but shouldn't be too different. I'd personally send that one to a known reputable rebuilder. I rebuild my own and buy kits from Cliff Ruggles.

**'68OrangeSunshine** · 07-13-2024, 05:59 PM

You want a Rochester Monojet.
Both L6s, the 250 and 292, use Monojets, but the 292's bore was bigger. Maybe larger jet[s] too. IDK.
For a 250 either will work.
Carbs designated for '70 and later may have emissions modifications. As I recall MY '69 had an Anti Dieseling Solenoid.
My own '68 C/10 Stepside w/L25 292 L6 had a Monojet with a Manual Choke.

I don't know much more since I went to a 4 barrel carb in 1978.

**oneshotkyle** · 07-13-2024, 07:16 PM

I ran a polished ebay special one on my ol’e 250. It worked fine but I believe the monojet to be superior in the smoothness

**Jason Banks** · 07-14-2024, 08:55 AM

Why not a real Reman Rochester Monojet from Rockauto... -

https://www.rockauto.com/en/moreinfo...t=5904&jsn=917

The $100 core charge makes it much more expensive though...

Wrenchbender Ret · 07-14-2024, 01:56 PM

The Monojet is a great carb. The only draw back is the auto-choke system. Through the years they used several different choke systems. Most of them didn't work well. The choke part of the carb must match the manifolds to work properly. There were different manifolds to match the various choke systems. The best carb to use would be the latter models with electric choke or a manual choke carb.

George

**'68OrangeSunshine** · 07-14-2024, 05:11 PM

Quote:

Originally Posted by Wrenchbender Ret

The Monojet is a great carb. The only draw back is the auto-choke system. Through the years they used several different choke systems. Most of them didn't work well. The choke part of the carb must match the manifolds to work properly. There were different manifolds to match the various choke systems. The best carb to use would be the latter models with electric choke or a manual choke carb.

George

My '68 MonoJet had manual choke.

**PanhandleShantyman** · 07-16-2024, 05:26 PM

The Rochester monojet on my '69 I6 250 had a bent up throttle and was literally held together with baling wire. I swapped it in for a rebuilt Rochester Monojet from NationalCarburetors.com for about $280 and was totally happy with it. It arrived all clean and primed and looks like it's good for another 50 years.

You would either need the Rochester Monojet M or the MV, depending on whether you have the manual choke or the automatic choke. (I accidentally ordered the wrong one initially because I'm a newbie who knows nothing, and they were nice enough to not charge me any extra shipping or whatnot on getting the right one to me.)

https://nationalcarburetors.com/chev...arburetor_1969

07-13-2024, 05:06 PM	#1
Luke87gt Registered User Join Date: Feb 2024 Location: Pleasanton CA Posts: 232	Point me to a replacement eBay carb to a 1969 i6 250 Hi guys, I have heard good reviews on the replacement Rochester Monojet reproduction carbs on eBay. These things sell for around $80-120 with either a manual or electric choke. Can someone point me to a reputable eBay dealer that sells these things. Also, I notice that many of them on eBay are listed for 70-74 250 i6 c10. Is there any reason the carb would differ for a 1969 (I have a ‘69 c10 250) ? Thanks Luke __________________ 1969 C10 Shortbed

07-13-2024, 05:53 PM	#2
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,577	Re: Point me to a replacement eBay carb to a 1969 i6 250 It would likely be a different calibration but shouldn't be too different. I'd personally send that one to a known reputable rebuilder. I rebuild my own and buy kits from Cliff Ruggles. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

07-13-2024, 05:59 PM	#3
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,422	Re: Point me to a replacement eBay carb to a 1969 i6 250 You want a Rochester Monojet. Both L6s, the 250 and 292, use Monojets, but the 292's bore was bigger. Maybe larger jet[s] too. IDK. For a 250 either will work. Carbs designated for '70 and later may have emissions modifications. As I recall MY '69 had an Anti Dieseling Solenoid. My own '68 C/10 Stepside w/L25 292 L6 had a Monojet with a Manual Choke. I don't know much more since I went to a 4 barrel carb in 1978. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 07-13-2024 at 08:18 PM.

07-13-2024, 07:16 PM	#4
oneshotkyle Senior Member Join Date: Jan 2015 Location: central oregon Posts: 256	Re: Point me to a replacement eBay carb to a 1969 i6 250 I ran a polished ebay special one on my ol’e 250. It worked fine but I believe the monojet to be superior in the smoothness

07-14-2024, 08:55 AM	#5
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,606	Re: Point me to a replacement eBay carb to a 1969 i6 250 Why not a real Reman Rochester Monojet from Rockauto... - https://www.rockauto.com/en/moreinfo...t=5904&jsn=917 The $100 core charge makes it much more expensive though...

07-14-2024, 01:56 PM	#6
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,228	Re: Point me to a replacement eBay carb to a 1969 i6 250 The Monojet is a great carb. The only draw back is the auto-choke system. Through the years they used several different choke systems. Most of them didn't work well. The choke part of the carb must match the manifolds to work properly. There were different manifolds to match the various choke systems. The best carb to use would be the latter models with electric choke or a manual choke carb. George

07-16-2024, 05:26 PM	#8
PanhandleShantyman Junior Member Join Date: Dec 2023 Location: Pensacola, FL Posts: 35	Re: Point me to a replacement eBay carb to a 1969 i6 250 The Rochester monojet on my '69 I6 250 had a bent up throttle and was literally held together with baling wire. I swapped it in for a rebuilt Rochester Monojet from NationalCarburetors.com for about $280 and was totally happy with it. It arrived all clean and primed and looks like it's good for another 50 years. You would either need the Rochester Monojet M or the MV, depending on whether you have the manual choke or the automatic choke. (I accidentally ordered the wrong one initially because I'm a newbie who knows nothing, and they were nice enough to not charge me any extra shipping or whatnot on getting the right one to me.) https://nationalcarburetors.com/chev...arburetor_1969



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