help with fuel line / carb info

[Rainman68]

have a 68 C10 with a L6 250 single barrel Rochester carb with the fuel inlet on the front of the carb. The new pre-bent SS fuel lines I purchased have the inlet to the carb on the right side. I don't know if I have the wrong carb or if I purchased the wrong fuel line. Anyone on here have any suggestions?

You might ask why does it matter where the fuel line goes in? Well I have had this truck for 25 years and have only been working on it for about the last year and I want it to be as original as I can keep it but look as good as I can make it. I don't like the look of cut fuel lines with rubber hoses and clamps. Personal preference.

Did the 68 inline6 250 come with more than one carb option?

[truckster]

I'm not sure about the last part of your question. I sold my straight 6 several years ago, but I believe the fuel inlet was on the right side (engine side).

[70STOVEBOLT]

I could be wrong but I think your truck would have had a Rochester model B carb originally and it sounds like you have MV on there now. I don’t have pics but if you search you should find some on this site.

[firedemon]

my 67 came in on the motor side

[BigBird05]

The carb on your engine should have a serial # stamped on it. Get that # and look it up. Then you will know what you have.

[drewbert41]

You could bend one yourself. I was able to do it with pre flared line from NAPA and a $10 China Freight tube bender.

[Rainman68]

The number on the carb is 7040021. I have not been able to find a site online where I can get the info I need to identify what make, model and years the carb was used. It could be that I don't know to search for the info correctly.

[Daves70]

I just did a search. Looks like a MV carb off of a 70 chev/ GMC truck. So it's been changed at some time. I just googled that number with rochester and that's what came up.Can't find carb # try hereNumber

Brand: RochesterType: R1-MV
Number: 7040021
CU: 1-194

General Picture of a R1-MV

Actual Picture

Disc: 70 Chevy & GMC TruckNotes: NotesCyl: Rebuild Kit: KT-5170A /

Check here for Muscle car Info

Float: FLT-100-47 /Acc Pump: 185Choke Pulloff Front: 7002 /Acc Pump Cup: Choke Pulloff Rear: /Needle & Seat: 505XChoke Thermostat:9001 /PowerValve: Jets: Jets Mixture Control Solinoid: Mettering Rods: Throttle Position Sensor: Linkage Rods: / Fuel Fitting:
FuelFilter:
Mixture Screw: Air Cleaner Gasket:

Rebuilt Carburetors

Bowl Gasket: /Carbs Unlimited Rebuild:1-194Middle Gasket: /New Carb/Reman:64-7133Base Gasket: 986 /Core: $

Check the Rochester Parts Page for more parts
We have many parts that may not be listed Call 253-833-4106


This carburetor was made by Rochester , The Rochester Products Division of General Motors was located in Rochester New York and built carburetors for GM vehicles since 1949 . It is a R1-MV . This carburetor has a part number of 7040021 and used on 70 Chevy & GMC Truck . Check here for specific Muscle car InfoReferenced by ; Rochester 7040021



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[Jason Banks]

I can't believe I didn't see this when you first posted. I ordered every available fuel pump to carb line I could find for my 68 with a 250. Most of them are wrong. I think I got one that was like original, but I couldn't use it because I have upgraded to HEI. It has been a couple years and I don't remember where the 'good' one came from. When I get to work tomorrow I will see what I can find.

[Jason Banks]

The correct carb number for a 1968 250 is 7028007 for 1969 is 7029007. I have had a saved search set up on ebay to email me anytime a 7028007 is listed and I think only 1 has come up in the past 3 years. I didn't buy it because it was junk.

I actually have these numbers in my saved search - (7028006, 7028007, 7028010, 7028011, 7028012, 7028013, 7029007, 7029011, 7029012) If it begins with 7028 is is 1968 and 7029 is 1969.

If the carb you have runs good I wouldn't replace it. I have some 704 number carb on mine now even though I have bought a few 7029007 from ebay that need rebuilt. I rebuilt one and couldn't get it adjusted to run as good as the one I took off, so I went back.