Anybody still running 2 barrels on their V8's? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**oldgold70c10** · 04-21-2006, 01:10 PM

Is anyone using a 2 barrel carb on their trucks with 307 or 350's? How has your milage been? Anybody been running a 2 barrel V8 with a 700R4? That is what I am planning on doing. After I rebuilt my 2 barrel carb, performance seemed to improve enough to be adequate for daily driver, but I want to replace the TH350 with a 700R4. How has it worked for any of you?

jimmydean · 04-21-2006, 01:40 PM

My truck came with a 2 barrel. It leaked a little and had no power, but I thought my milage was ok until I started paying attention. I got worse milage with that setup than I do with an Edelbrock performer and Carter AFB.

It might have been the leak, but the performance and mpg both sucked for me.

<edit> I stil have the carb and intake if you want them. Pay shipping and they are yours.

**Ron 586** · 04-21-2006, 01:40 PM

My 1972 C/10 with a 307 2 barrel and 3 speed straight shift will get 16-18 mpg week in and week out going back and forth to work. It will do better on a longer run if you don't run over the speed limit. It has a little over 110000 miles on it and still does a good job.

farside847 · 04-21-2006, 02:44 PM

Quote:

Originally Posted by Ron 586

My 1972 C/10 with a 307 2 barrel and 3 speed straight shift will get 16-18 mpg week in and week out going back and forth to work. It will do better on a longer run if you don't run over the speed limit. It has a little over 110000 miles on it and still does a good job.

Holly crappers! What gear rear end do you use? I have a 307v8 with a 2barrel and a 3 speed and 3.73 rear and I only get 14mpg.... Been planning a rear end swap or ner tranny to help.

jimmydean · 04-21-2006, 03:22 PM

Quote:

Originally Posted by farside847

Holly crappers! What gear rear end do you use? I have a 307v8 with a 2barrel and a 3 speed and 3.73 rear and I only get 14mpg.... Been planning a rear end swap or ner tranny to help.

My 350 with 3.73 and granny 4 speed got 12 to 14 on average. I get about 18 now and I drive like a jackass.

cdowns · 04-21-2006, 03:55 PM

the more the merrier

thecatseye66 · 04-21-2006, 04:21 PM

Only until I can find the time to put my new q-jet and intake on.
This is the original Holley 500 on a '68 396.

boundstaffpress · 04-21-2006, 04:28 PM

I only have a 283, and I still run the stock 2 jet. I have 4 wheel drive, and 3.73 gears, so not suprisingly my first calculations for milage were only 8.5 mpg. Since then, I've gotten the transfer case unstuck from 4hi, and replaced my rear u-joints so I'm expecting better in the future, but don't think it will ever make 18.

**Ron 586** · 04-21-2006, 05:39 PM

Quote:

Originally Posted by farside847

Holly crappers! What gear rear end do you use? I have a 307v8 with a 2barrel and a 3 speed and 3.73 rear and I only get 14mpg.... Been planning a rear end swap or ner tranny to help.

I don't have a clue what's in it. I would think it's 3.73 but not sure. It pulls good and runs at speed limit without sounding like it's going to blow up.

redhead69 · 04-21-2006, 05:52 PM

307/ 2bbl sm465. all stock.. avg 15 mpg.

JAKES 68GMC · 04-22-2006, 10:22 PM

I'd think a Holley 500 2bbl would do pretty good on a 350 SBC or smaller. I have one on my v6 and it seems to work really really good.

**truckdude239** · 04-26-2006, 11:38 AM

i have the stock 2 barrel on mine and i get about 14-15 miles to the gallon if i keep my foot out of it 307 v8 backed with a 3 speed

04-21-2006, 01:10 PM	#1
oldgold70c10 Who's got steelies? Join Date: Feb 2006 Location: Morrison, Oklahoma Posts: 1,026	Anybody still running 2 barrels on their V8's? Is anyone using a 2 barrel carb on their trucks with 307 or 350's? How has your milage been? Anybody been running a 2 barrel V8 with a 700R4? That is what I am planning on doing. After I rebuilt my 2 barrel carb, performance seemed to improve enough to be adequate for daily driver, but I want to replace the TH350 with a 700R4. How has it worked for any of you? __________________ 1969 C10 LWB W/ 250 I6 & 3spd 1970 C10 with '67 small window cab, 68 front end, blue; 305/TH350, 3.08 limited slip rear end, manual brakes, power steering; & 4-wheel drums-My daily driver. 1975 Chevelle Malibu Classic Coupe 350/th350 mint green 1970 C20 Suburban 350/700R4 4.10 gearing green & white 1978 Big 10 Silverado 350/th350, working ac, 2 tone blue-My summer daily driver 1983 GMC 1500 Sierra 305/SM465 2.73 rear end How to add a trip odometer to your 67-72 stock speedometer How to rebuild your Q-Jet My Truck Page My Youtube Channel

04-21-2006, 01:40 PM	#2
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Re: Anybody still running 2 barrels on their V8's? My truck came with a 2 barrel. It leaked a little and had no power, but I thought my milage was ok until I started paying attention. I got worse milage with that setup than I do with an Edelbrock performer and Carter AFB. It might have been the leak, but the performance and mpg both sucked for me. <edit> I stil have the carb and intake if you want them. Pay shipping and they are yours. Last edited by jimmydean; 04-21-2006 at 01:41 PM.

04-21-2006, 01:40 PM	#3
Ron 586 RIP Mr Ron Join Date: Dec 2005 Location: Big Sandy, Tn. 38221 Posts: 8,166	Re: Anybody still running 2 barrels on their V8's? My 1972 C/10 with a 307 2 barrel and 3 speed straight shift will get 16-18 mpg week in and week out going back and forth to work. It will do better on a longer run if you don't run over the speed limit. It has a little over 110000 miles on it and still does a good job. __________________ Ron (Mr Round Tuit) Be kinder than necessary, for everyone you meet is fighting some kind of battle TN Message Forum TN Facebook Group SETN Truck Show My Photobucket

04-21-2006, 03:55 PM	#6
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Anybody still running 2 barrels on their V8's? the more the merrier __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 05-12-2006 at 08:05 AM.

04-21-2006, 04:21 PM	#7
thecatseye66 '68 C-20 396 CST CC Join Date: Mar 2005 Location: Spokane, WA Posts: 454	Re: Anybody still running 2 barrels on their V8's? Only until I can find the time to put my new q-jet and intake on. This is the original Holley 500 on a '68 396. Attached Images __________________ 68 C-20 396/TH400 CST Custom Camper NOW W/DISC BRAKES 01 Jetta Turbo Daily Driver 84 Yamaha Virago 700 - Alaska to Florida Via Maine & Mexico

04-21-2006, 04:28 PM	#8
boundstaffpress Jamie Hyneman is my twin Join Date: Nov 2005 Location: La Junta, Colorado Posts: 705	Re: Anybody still running 2 barrels on their V8's? I only have a 283, and I still run the stock 2 jet. I have 4 wheel drive, and 3.73 gears, so not suprisingly my first calculations for milage were only 8.5 mpg. Since then, I've gotten the transfer case unstuck from 4hi, and replaced my rear u-joints so I'm expecting better in the future, but don't think it will ever make 18. __________________ Justin SOLD 1967 K10 Fleetside, 283, Front and Rear Posi SOLD Color Wiring Diagrams Now in High Resolution V8 and Cab and Cab and Chassis

04-21-2006, 05:52 PM	#10
redhead69 fugedaboutit Join Date: Mar 2005 Location: Gresham, OR Posts: 832	Re: Anybody still running 2 barrels on their V8's? 307/ 2bbl sm465. all stock.. avg 15 mpg. __________________ Currently truckless

04-22-2006, 10:22 PM	#11
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,212	Re: Anybody still running 2 barrels on their V8's? I'd think a Holley 500 2bbl would do pretty good on a 350 SBC or smaller. I have one on my v6 and it seems to work really really good.

04-26-2006, 11:38 AM	#12
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,230	Re: Anybody still running 2 barrels on their V8's? i have the stock 2 barrel on mine and i get about 14-15 miles to the gallon if i keep my foot out of it 307 v8 backed with a 3 speed Attached Images __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube



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