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#1 |
Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Oh man Gas prices will kill me..which engine?
I have the original 350 block to rebuild, or I also have the 4.3 liter engine with all eletric or I also have the old rocket 350 high nickle grade block from 69. I'm tempted to do the olds, but the 4.3 talks to me to save fuel. What shal I do?
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#2 |
Registered User
![]() Join Date: Apr 2006
Location: San Diego
Posts: 147
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Re: Oh man Gas prices will kill me..which engine?
I asked myself the same question when I started my build. Pretty much it boils down to what you want your truck to be once its done. Power = bad mileage
and usually Good Mileage = Lower power. For a daily driver pick a mileage build with a milder engine. I picked a 350 with a mild build and am getting a good gas saving tranny (700R4). Just think ahead a lil bit to what you want the final product to be like. |
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#3 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Oh man Gas prices will kill me..which engine?
Quote:
Then get a Ford Escort, 1994 or 1995 with a 5-speed and 1.9l engine to drive every day. They cost under $1500, you can't kill them, and they get 35+ mpg.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#4 | |
Registered User
Join Date: Apr 2003
Location: NB
Posts: 3,367
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Re: Oh man Gas prices will kill me..which engine?
Quote:
My crazy sister bought a 90 escort new and is still driving it. You just can't go wrong there. ![]()
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1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD |
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#5 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Oh man Gas prices will kill me..which engine?
Quote:
Recently there was a fatal on I-94 NW of the twin cities. A full-sized CK pick-up was hit head on by a Chevy Cavilier. The couple that were in the Cavilier are alive. The guy in the full-sized pick-up didn't make it. My poor little 1994 Escort that I bought new and now has 254,5xx miles on it is just about beyond its useful life. My daughter is 4. There is a fighting chance that she will some time drive the next car I buy. I'm not looking for a big, heavy, crappy gas mileage tank. I'm looking for an agile, American made, fuel efficient car that is highly ranked in crash tests. If I own my truck 12 years from now the only time I'll let her drive it is if I'm riding shotgun.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#6 |
Senior Member
Join Date: Aug 2005
Location: tulsa OK
Posts: 3,070
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Re: Oh man Gas prices will kill me..which engine?
ls1 your truck and get 18 to 25 ( or so) MPG
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#7 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Oh man Gas prices will kill me..which engine?
There was a member here with a 67. with a 4.3L with a 4L60E transmission and he was getting 18-19 mpg on the highway. Probably 15 city. I think his board name was Scooter67, but I think the truck was sold to another memember.
Daily driver: 4.3 Weekend cruiser..... BIG BLOCK ![]()
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Oh man Gas prices will kill me..which engine?
As far as MPG, I've had 2 350 small blocks, one old worn stock one, one fresh cammed out one...turned old and decrepid after some time.... then I had a 400 small block in good condition, and now this caddy 500..... they ALL got 10 - 12 MPG
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#9 |
Senior Member
![]() Join Date: Mar 2005
Location: weatherford,texas
Posts: 1,003
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Re: Oh man Gas prices will kill me..which engine?
my '67 250 c.i. six cylinder with 3.73's gets 10 mpg..........
i could of had a v-8!!!!!and get the same milage |
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#10 |
Registered User
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
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Re: Oh man Gas prices will kill me..which engine?
As far as gas engines go in these trucks, the old tired 350 which was 100% as it left the factory got the best fuel mileage wise.
I imagine with an OD it was have done really well considering the size.
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'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!! |
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#11 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Oh man Gas prices will kill me..which engine?
Not just a V-8... A 500 CID big block.
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#12 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Oh man Gas prices will kill me..which engine?
My stock internal 250ci with a 4bbl intake/450cfm carb, dual headers, and a set of 4.56's in the rear gets 14mpg whether I am doing 70mph on the highway or cruising around town......thinking about looking into an overdrive unit behind the transfer case down the road.
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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#13 |
Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Re: Oh man Gas prices will kill me..which engine?
shelby.....no offense but I find your current milage and configuration with it is a bit hard to believe.
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#14 | |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Oh man Gas prices will kill me..which engine?
Quote:
Future plans are to swap in 4.10's, the use of acetone just to see what the hype is all about, and slightly taller (and less bald) tires. Just as a side bar, with the torque this engine put out stock it was fun, with the secondaries wide open on the highway this truck is FAR from underpowered!
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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#15 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Oh man Gas prices will kill me..which engine?
iluvmy 72:
I have a stock 350 (one of them crappy late 70's weak 180 horsepower?) with a 700R4, 3.73 rear end. If I kept the truck at about 60mph I could get almost 17 mpg highway. If I pushed it to 75mph (which it easily cruised at with the 700R4) my mpg dropped to a little below 16. I consistently got about 13-14 straight city driving. When the truck had the I-6 and 3spd I got about 11mpg, speed and type of driving didn't seem to have any effect. Maybe the real question is which transmission and which rear end gear to use?
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 08-08-2006 at 12:42 PM. |
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#16 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Oh man Gas prices will kill me..which engine?
It's the 4.10's that I hate. I have a 3.54 Dana rear heading here next weekend, should make freeway cruising MUCH nicer.
Maybe I'll check my MPG again after that. |
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#17 |
Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Re: Oh man Gas prices will kill me..which engine?
Hey longhorn.....where did you get that DANA?
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#18 |
Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Re: Oh man Gas prices will kill me..which engine?
OK I think I am shooting for this configuration.....I will put in the 69 Olds Rocket 350(light and strong) and see if I can get a bell housing adapter to work with a 700 r4 from my Astro van and move the rebuilt TBI stuff to the Olds. I think this will be my best option in terms of power and milage. I am not going to use the old 350. I might just rebuild it and sell it to a ebayer.
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#19 |
so easy a caveman can do it...
![]() Join Date: May 2006
Location: Albuquerque, NM
Posts: 419
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Re: Oh man Gas prices will kill me..which engine?
To the OP...just buy a used Honda or Toyota and build the truck how you want it.
--->owns a 91' Honda CRX that averages 35-40 mpg depending on how I drive it. /puts flame suit on ![]() |
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#20 |
Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Re: Oh man Gas prices will kill me..which engine?
That would mean I might sell my old TH350 tranny. It was rebuilt with only 150 miles on it before I moved out of state. It also has a high performance shift kit. Cost me 1400 bucks to have it rebuilt. Though it has been sitting for 2 years it's still probably good.
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#21 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Oh man Gas prices will kill me..which engine?
I got the dana from a member here, was on the parts board.
the only adapter you should consider is from trans adapt. This acording to all the guys on the caddy board I frequent. Personally, I'd just sell the 700 R4 and pick up a 200 4R, most of them already have a daul bolt pattern bellhousing and has better gearing all around. |
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#22 |
Senior Member
![]() Join Date: Jul 2006
Location: Leander, Texas
Posts: 850
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Re: Oh man Gas prices will kill me..which engine?
I think the main problem is that you're trying to drive something old and heavy as a daily driver AND get decent mileage. It is what it is. I agree, make it nasty and drive it on the w/e's.
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#23 |
I'm back did you miss me?
![]() Join Date: Jul 2006
Location: New Jersey
Posts: 60
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Re: Oh man Gas prices will kill me..which engine?
I've got a 93 nissan std cab short bed 4cyl auto that only gets 15mpg (epa is 18-20) Thats why I got my V8.
__________________
1984 C10 Shorty 250 Inliner 1969 Custom Camper/20 GONE(but not forgotten). 1976 C20 with 292L6 36K original miles now 41K. SOLD 87 Chevy P30 stepvan 6.2L diesel 140K (SOLD) |
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#24 |
Registered User
Join Date: Jul 2006
Location: CA
Posts: 69
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Re: Oh man Gas prices will kill me..which engine?
my mom gets 16-18 mpg in her 68' camaro with a 350, th400, and 3.08 but its lighter then a pick up.
it gets better gas milege then our 04 f150 darin ________________ 70 c/10 250/3 on tree/3.73 being rebuilt |
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#25 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Oh man Gas prices will kill me..which engine?
how much lighter is this camaro? Most muscle cars were 3500 - 4000 pounds... like the typical small block truck.
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