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 Post subject:
PostPosted: Wed Apr 28, 2010 2:15 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13280
Location: Fircrest, WA
Car Model: 76 D100
Ah, to be able to fit in something small and light. Some of us can only dream. :lol:

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Casually looking for a Clifford hyperpak intake for cheap.


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 Post subject:
PostPosted: Fri Apr 30, 2010 6:13 pm 
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2 BBL ''SuperSix''

Joined: Wed Feb 24, 2010 4:45 pm
Posts: 10
Car Model:
gas milage has more to do with tranny and rear end then motor or shape of vehicle if you have a 225 with a automatic your not going much over 20mpg with a 3.55 rear swap over to a 323 with a 833od and you can push high 20s even in a truck but you will not be haulin heavy loads just arse


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 Post subject:
PostPosted: Fri Apr 30, 2010 7:00 pm 
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Board Sponsor
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Joined: Fri Feb 29, 2008 10:49 pm
Posts: 1547
Location: Salem, Oregon
Car Model: 1984 D100 Shorty Custom
The best I ever did was in my 'ol 71 Dart 4 door. On a weekend trip to Medford for racing, my combined mileage was 27.

225, A904, 2.76:1, 2.25" exhaust from firewall back, freeflow muffler, and a #55 jet in the Holley 1920. It was hot that day, I was pingin like mad (stock dizzy), but the drive to Medford and back, plus racing netted me 27 MPG... doing no faster than 55 on the freeway both ways, and shutting the car off anytime I wasn't racing.

55mph in an auto car and 2.76:1, with stock 185/70/14s on the back gets me about 2100 RPM.

I did similarly with the Duster, 26 MPG from Salem to Seattle and back. 1920 with a #56 jet, 2.76:1, A904, and doing no faster than 60 on the way.

~THOR~

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1984 D100 Shorty Custom
Certified Auto Appraiser - RevItUp Classic Appraisals
President - Cherry City Bombers CC
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 Post subject:
PostPosted: Sun May 02, 2010 1:58 pm 
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Supercharged
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Joined: Mon Jan 15, 2007 5:05 pm
Posts: 3767
Location: Black Diamond, WA
Car Model:
Thor,

That sounds about right with this crummy fuel. I get the same mileage in my 74 with those jets if I behave and don't spin the tires too much at the lights. :)

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG


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