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04-15-2007, 09:46 PM
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#1 |
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Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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19.5 Mpg!
I just checked the mileage of my '85 with a TBI 350/TH350 lockup, and got 19.5 miles per gallon! And that's around town, not just highway. I rescently installed a rebuilt 350 and the throttle body setup, and have been trying to figure out why it runs lean when it's cold, but it runs good after it's warmed up, so for that kind of mileage, I may just have to leave it alone.
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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04-15-2007, 09:49 PM
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#2 |
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Well, Whoop-dee-do!
 
Join Date: Mar 2003
Location: Easton, Mo. pop.- me & scarcely a few others
Posts: 2,302
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Re: 19.5 Mpg!
That's great! I know the '88 350 TBI in a 2wd would get 19-21 on the highway. Are you running the original TBI swirl port heads?
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'68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD  '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car 
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04-15-2007, 10:10 PM
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#3 |
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The Crazy Machanic
Join Date: Jan 2007
Location: Nokesville Va
Posts: 1,437
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Re: 19.5 Mpg!
might just have to reconvert mine back to tbi.
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*1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) * 1970 chevelle 2dr sedan Latest update June 24 2007.  *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad)  newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one
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04-15-2007, 10:10 PM
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#4 |
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Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: 19.5 Mpg!
The heads are original '91 TBI heads. I'm thinking that I may have the wrong (305) injectors, or chip, but unless I have more problems, I'm in no hurry to fix it.
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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04-16-2007, 01:07 AM
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#5 |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: 19.5 Mpg!
Thats awesome, glad to hear your getting good mileage!
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
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04-16-2007, 08:40 AM
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#6 |
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dang its hot
Join Date: Nov 2006
Location: frankfort kentucky
Posts: 1,349
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Re: 19.5 Mpg!
what's mileage? 13.5 slappin curbs....
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04-16-2007, 09:02 AM
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#7 |
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Right on the line, baby!
Join Date: Oct 2003
Location: Phila, PA 19130
Posts: 1,486
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Re: 19.5 Mpg!
2.73 rear?
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83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly Click and scroll down for site vendors! Subscribe here! |
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04-16-2007, 09:33 AM
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#8 | |
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Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: 19.5 Mpg!
Quote:
That's about what I was expecting to get!
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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04-16-2007, 09:34 AM
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#9 | |
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Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: 19.5 Mpg!
Quote:
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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