Moparts
What is your 451 or 470 Stroker Gas Mileage ~ No Joke
Posted By: 72blubird
What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 09:51 PM
I am building either a 451 or 470 400 stroker and will run pump gas. Curious what your real world (not foot in it) gas mileage is. Most of the events I will be going to are about 100 mile round trips or more. Yes I will be driving it to the strip. I am really interested to hear mileage numbers. Please let me know recipe and also your gear ratio. I am building a street/strip motor but the reality is I need to drive to events and will. Any info appreciated
Posted By: JohnRR
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:01 PM
Posted By: BradH
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:09 PM
600 HP RB 452 on 93-octane pump gas that got 7-9 MPG on the highway. Car ran mid-10s in street trim after driving to & from track.
Posted By: MR_P_BODY
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:21 PM
Gear ratio and tire size plus weather its a auto or
stick trans... and if they have a idea of the conv
slippage rate
Posted By: 440dart
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:28 PM
71 Swinger, 496 RB, 600 HP, 8 inch Continental convertor, 4.10 gear, 315 drag radial. about 6 or 7 miles per.
Posted By: 383man
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:49 PM
My 493 does about 6 to 7 miles per gallon I would say also. My old 440 got a good 12 miles to the gallon keeping my foot out of it. But I was surprised how much fuel the 493 uses. I did have to jet up alot and it seems to get about half the milage the 440 got. But I am not in this hobby to worry about gas milage because if I was I would be in a different hobby.
Ron
Posted By: mikeysmopars
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:55 PM
Mine is a 470 and gets a full 3 runs from 5 gallons of Sunoco!
Posted By: 72blubird
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 10:58 PM
Thanks for the info guys keep em coming...it is great hearing about your combos
Yeah not in the hobby for gas mileage either, but the reality is costs are costs. Gas cost maybe a factor in how many events i do this year.
Posted By: I_bleed_MOPAR
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 11:03 PM
Quote:
Mine is a 470 and gets a full 3 runs from 5 gallons of Sunoco!
Truly a gallons per mile vehicle. 
Tim
Posted By: cudadoug
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 11:09 PM
Of course, your mileage may vary. LOL!!
I'm thinking it's going to be really good Smiles Per Gallon, too!
Posted By: 72Swinger
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 11:32 PM
Mine is a mild 451 in a 72 Dart. Speedo never worked but am in the process of putting in a 6spd and EZ Efi. Should be ready in a couple months. Still won't have vacuum advance but I'm hoping for at least 15mpg.
Posted By: danbob
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 11:33 PM
Got a 451 in a duster, about 550 hp. 4.10 gear 30" tall tire.
Drove it on the power tour a couple of years ago. Got between 8 - 10 mpg.
Posted By: OUTLAWD
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/30/12 11:55 PM
Mild 493 ~530 hp, 3500 10", 3.55 29" tire, a solid 12-13 with normal driving, 750 vac sec holley, 11.50's in a 3400# B body
Posted By: maximum entropy
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 12:06 AM
mr. scamp runs 10.60, pump gas 496. 30" tall tire, 3.73 gear, 14 mpg @ 60 mph if i'm REALLY careful. if i touch the throttle? 0 mpg. hey, it takes fuel to make power. i think i could easily run it dry in 10-15 minutes of maniacal pedalfest.
Posted By: Anonymous
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 12:11 AM
Just wondering what you think the cost of towing the car home will be if you break down at the track? Would investing in a open trailer not be something to look at if you own a truck and if no truck then I hope you don't break down.
Posted By: Triple Threat
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 12:20 AM
Quote:
Just wondering what you think the cost of towing the car home will be if you break down at the track? Would investing in a open trailer not be something to look at if you own a truck and if no truck then I hope you don't break down.
AAA is a lot cheaper than a truck and trailer.
Posted By: ahy
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 12:42 AM
Mine's a 496. 10.2 CR,
243@.050 cam, EFI, 5 speed OD, 3.23 rear and 25" tires. It gets 14 highway at 75 or so. 11-12 around town. That's neither babying it nor riding it. If I ride it its in the single digits.
Posted By: MoparBilly
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 01:33 AM
First year we went on DragWeek, we took a 78 d-100 with a 496 and a Dominator. 6 to start out, then learned how to drive and jet it ended up at 9-10. Most guys were going down 10 jet sizes between driving, and racing with a Dominator.
Got 12 last year with the stroker small block, 8" converter, and 3.89 gears...31 tall tire though.
Posted By: BSB67
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 02:29 AM
12-13 mpg combo around town/country driving.
Posted By: Cab_Burge
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 02:42 AM
Quote:
Thanks for the info guys keep em coming...it is great hearing about your combos
Yeah not in the hobby for gas mileage either, but the reality is costs are costs. Gas cost maybe a factor in how many events i do this year.
I have a 440 motor with a 3.90 stroke crank and 4.350 bore, 464 C.I., Eddy RPM heads and stock type vacume six pak carbs jetted for best WOT performance, 10.5 to 1 compression ratio, Oregon non ethanol 91 octane pump swill. The car is a 3450 lb Duster with me in it and a full tank of pump gas, 4.10 gears and 315x60x15 M/T ET Street Radials tires, 727 with both a 10 inch and 8 inch converter. Best (SWAG)guessimate(speedo is off )is maybe 12 to 14 MPG driving it at road speeds doing the 55 MPH speed limit for any distances Local driving with a occasional blast to clean the plugs results in a lot less MPG The right foot controls the fuel milegages and the exposure to tickets 
Car runs in the high tens in the 1/4 mile with that motor I have a dual wide ban O2 system on the car and I ended up jetting the center carb. to have a AFR of 14.8 or higher, depending on throttle position, at 2100 RPM cruise
Posted By: 383man
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 02:56 AM
Quote:
Thanks for the info guys keep em coming...it is great hearing about your combos
Yeah not in the hobby for gas mileage either, but the reality is costs are costs. Gas cost maybe a factor in how many events i do this year.
I did not mean the comment about not worrying about gas milage or being in the wrong hobby as trying to be smart or did not mean it towards you.
To be honest if I drive real easy and cruise the highway about 55 mph I can get about 10 out of my 63. Its a 493 with an 850 DP and I use a Dynamic 9.5 converter that will flash about 4200 at the track. Has 4.30's with a 30" tire. I still have alot of tuning to do but I do jet for mph and performance not for milage. But thats just me. 
I guess you could say I worry about milage some as I built it to be a pump gas eng as no way did I want to run race gas in my street car. That would take me broke. Ron
Posted By: 471Magnum
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 03:43 AM
The 471 I ran in my 69 Charger would turn a consistent 16 mpg on the highway. No joke.
10.7:1 CR w/Edelbrock heads. 4.10 gears, 28" tires... and a Keisler 5 speed w/ 0.64 OD. Cruised at like 2800 rpm IIRC. Ran low 13's at about 110 granny shifting.
The key component was actually the 870 street avenger that I tuned to the edge using a wideband O2 and data logger (Innovate LM-1).
Got about 9 mpg around town. I hit 18 mpg once or twice on some long flat highway runs.
Posted By: Mr.Yuck
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 03:53 AM
stock stroke 440 6 pack avg'd about 13 at a steady 45-50mph.
Posted By: Sledge_57
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 04:14 AM
If (big if) I keep my foot out of it I get 10mpg with my tank.
470, Mighty Demon 850, Edelbrock Performer RPM, 259 @ 0.050 cam, 4:30 gears, and 4000 rpm converter on 275-60-15's
Posted By: quickd100
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 12:30 PM
My son and I drove my truck to a car show about 3 years ago. Drove it real easy and never got into the secondaries. It averaged 13mpg. 528 Hemi, 10.4-1 MP 614/598 solid cam, 10" TA convertor, 4.56 gears, 31" tall tires. I'd tuned the dual thermoquads so at cruise they were about 15.2-15.6 a/f ratio. The motor made 683ftlbs. of torque, very little throttle opening was required to keep it at 55-60mph.Dave
Posted By: bodyworks racing
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 01:57 PM
Posted By: Azzkikrcuda
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 03:37 PM
440, 727 with 3500 stall, and 3.55 gears. I get around 11MPG on roadtrips.
Posted By: Thumperdart
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 04:33 PM
Don`t have a speedo or odometer to verify but I`d guess bet. 8-10 cruising w/a 1050 dominator,12.1 comp,.660-.680 275-280 @ .050 solid roller, 8 in. 5000+ vert and 29" Hoosiers and 4.11`s...........
Posted By: 572charger
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 05:21 PM
my 606 hemi gets 10-11 mpg !!! it idles at 35 mph
Posted By: jake4cars
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 06:16 PM
Quote:
Mine is a 470 and gets a full 3 runs from 5 gallons of Sunoco!
you will get no Christmas card from Ed Begley, LOL!!!
Joey
Posted By: ZIPPY
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 06:36 PM
Haven't had a working odometer in years, but best guess using mapquest data is around 11. It would be better if I would take the time to lean out the transition circuit, she's real rich at around-town speeds...I bought the meter but have not put the time into it.
Posted By: Jeepmon
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 07:01 PM
Its cheaper to use the 3/4 ton hemi pick up and 24' enclosed than to drive my car on the street..
410 SB... 6 mpg
Posted By: 72blubird
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 09:23 PM
Thank you for all the input. I would really like to go the 470 route and if I could get 10 mpg on longer trips that would be great. It would take discipline to stay out of it but if the reward is some trips down the track I think I would be willing.
Posted By: 67Charger
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 03/31/12 10:53 PM
I average 9 mpg with mixed highway and city, including 20 mile grades.
496" RB, 91 octane, 10.44:1, low .600 lift solid cam, 2.76 rear gears. Most highway speeds aren't even enough to get me above the converter stall.
At 140 mph, turning 4900 I averaged 10.8 mpg for the 90 miles of the Silver State Classic.
Posted By: Cab_Burge
Re: What is your 451 or 470 Stroker Gas Mileage ~ No Joke - 04/01/12 03:49 AM
Quote:
I average 9 mpg with mixed highway and city, including 20 mile grades.
496" RB, 91 octane, 10.44:1, low .600 lift solid cam, 2.76 rear gears. Most highway speeds aren't even enough to get me above the converter stall.
At 140 mph, turning 4900 I averaged 10.8 mpg for the 90 miles of the Silver State Classic.
DUDE, you DA MAN I'm calling No_Politics to give him the goods news on how to improve the fuel economy, drive faster so you get there quicker
