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300 inline 6 lacks power

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Old Sep 5, 2001 | 09:20 PM
  #1  
Vampiro's Avatar
Vampiro
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From: Canada
300 inline 6 lacks power

hey!
what's up?
i have a 1978 ford f-100 running a inline 6 300 with a 1 barrel carb. this is a very reliable truck, with low miles but the engine lacks power. is there any thing i can do without ripping apart the entire engine or adding nos?
i greatly appreciate any ideas.
if you can help me out can you please email me at death_loNo Email Addresses In Posts!)
thanks ever so much guys
 
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Old Sep 5, 2001 | 11:34 PM
  #2  
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77_f250_460
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300 inline 6 lacks power

there is a company out there that i think is called clifford preformance, and it specializes in making more power out of inline 6s...my advice, if you want more power, get a bigger engine...
 
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Old Sep 5, 2001 | 11:36 PM
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300 inline 6 lacks power

A good header would help. Try your Q in the inline forum.
 
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Old Sep 6, 2001 | 06:16 AM
  #4  
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jowilker
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300 inline 6 lacks power

Throw that boat anchor away and put a 351W in there or if you don't mind changing the tranny to go to a 390. Them wussy I6s were good for Pintos. :-)

Then you will have a real manly truck to drive. arg arg arg

John

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66F100s Rule
In the cool still quiet of night you can hear chevies rusting away.

 
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Old Sep 6, 2001 | 11:37 AM
  #5  
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artskyd
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From: indianapolis IN.
300 inline 6 lacks power

I had a 240 six in my 66'f100. Same problem...no power..1 barrel carb. I installed an offenhauser intake with a holly 390cfm carb. Also put on a set of try-Y headers out to a single exhaust. Every thing installed easily, I didn't use the throttle linkage kit recomended with the intake,and had the muffler shop run my pipe. Felt like I had little v-8 under the hood. Ran that truck for many years with that set up and it was very dependable.I picked up the intake through J.C.Whitney and the carb from Summet. The headers I ordered from my local parts store. This was the toughest to get right. Some early sixties vans used the same engine but the headers fit differently. Hope this gives you some ideas!
 
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Old Sep 6, 2001 | 11:40 AM
  #6  
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300 inline 6 lacks power

That 300 is like a lot of other engines in that the potential is there but consider the time, expense and lost gas mileage. I have a friend with one that has all the goodies and runs really good but still not as good as a mild 351w/m motor.

1977 Ford F-100
400m/c6/4:11/Gear Vender O.D.
Crane hydralic roller, forged, ported polished,Deamon,Edlebrock, yada, yada, yada
280,000 miles
Stock on the outside
modified/rebuilt everything

 
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Old Sep 6, 2001 | 11:45 AM
  #7  
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300 inline 6 lacks power

Man, you guys sure don't like 6's do ya?
 
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Old Sep 6, 2001 | 02:55 PM
  #8  
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beartracks
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From: Albuquerque
300 inline 6 lacks power

Actually I kind of like em. I'd like to build a truly wicked one and stuff it in a lightened falcon but that's another project.

1977 Ford F-100
400m/c6/4:11/Gear Vender O.D.
Crane hydralic roller, forged, ported polished,Deamon,Edlebrock, yada, yada, yada
280,000 miles
Stock on the outside
modified/rebuilt everything

 
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Old Sep 6, 2001 | 03:08 PM
  #9  
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Fastcat
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300 inline 6 lacks power

Call Cliford. You can find their number in most hot rod mags. A friend did the intake manifold w/ webber 2 bbl, blue printed head, header and duals in a 63 falcon. He says it's scarry fast and still gets 27 mpg. I plan on doning the same to my daughters 63 falcon.

If you can't find it e-mail me
knighthawk@idcomm.com

Rocky
 
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Old Sep 6, 2001 | 03:28 PM
  #10  
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Irondale90
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300 inline 6 lacks power

www.jegs.com you can get the offenhauser intake and a holly 390cfm carb. That 6 is a good strong engine and will run forever. A header and 2 1/2 to 3" pipe with a flow master would be good too but not as easy to change out. The intake carb thing can be done in no time.
zoom zoom.
 
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Old Sep 6, 2001 | 07:51 PM
  #11  
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fozzy
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From: New England
300 inline 6 lacks power

a guy running a "6" usually wins at our local dirt track .but I have to believe it was a V6.

https://www.ford-trucks.com/dcforum/User_files/3a9df0394b631ce6.gif






77'FORD F150 XLT 400
 
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Old Sep 6, 2001 | 09:48 PM
  #12  
otto's Avatar
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From: Racine WI
300 inline 6 lacks power

I love the 300, probably at the top of my list as one of fords longest lasting most reliable engines of all time, some go, some blow
 
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Old Sep 7, 2001 | 02:49 PM
  #13  
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85351ho
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From: Auburn,Al
300 inline 6 lacks power

 
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Old Sep 7, 2001 | 07:25 PM
  #14  
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benford
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300 inline 6 lacks power

Yep I'm with you Otto,

I bought my truck just because it had the 300

I remember back in 76 my dad had a brand new F-250 with an NP 435 and 300 six,
I always loved that truck and that engine was a workhorse,

Seems like mine has plenty of power,

Benford
 
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Old Sep 8, 2001 | 09:29 AM
  #15  
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maharashii
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300 inline 6 lacks power

checkout the l6 forum on this site too

When my l6 was on its last legs (180k miles, cracked block) I swapped it for another l6 (new rebuilt) and added an offenhauser intake, carter 4 barrel carb, and headers. It runs like a bat outta hell now. That 1 barrel carb is a real pos, i rebuilt mine three times (ok, a friend did it, i know nothing about carbs) and within months it slid back into performance hell.

take it easy,
maharashii
 
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