I6 and tire question again....
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Posting Guru
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From: Riverview, FL
I6 and tire question again....
I have been looking around on here for an answer but can't find it. I have a 77 F150 4X4 with an I6 and a 4spd. I plan on lifting my truck bout 10" and I want to run 40"x18"x15" tires. I want to have 4.88gears and a locker in the front and rear. Now if I rebuild the engine .040 over with a cam, intake and header, and a nice carb, will it run good? I want to be able to run in the mud with ease. It won't be a daily driver just a weekend toy. Do you think this I6 can handle it or should I swap in a built 351w? I like keeping the 6 but I want POWER!
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From: La Verne, California
To get the 300 I-6 to Run Well, you'll need a Melling Torque Cam, an Offenhauser "DP" Intake, an Borla or Hedman 2-into-2 Header & either a Holley 390 or 450 4v carb.
The 300 I-6 will Out torque a 351 v-8 Any day of the week, because the I-6 produces the torque you need in the 1,500rpm range, where as the v-8's only start doing so in the 3,500rpm range!
The 300 I-6 will Out torque a 351 v-8 Any day of the week, because the I-6 produces the torque you need in the 1,500rpm range, where as the v-8's only start doing so in the 3,500rpm range!
Postmaster
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From: La Verne, California
3,500 is when the 351 v-8hits it Max torque, the 300 I-6 hits it's Max torque @ 1,500.
Hmmmmmm, where would I rather have my Max torque, Early or later in the RPM band?
Defenetly EARLY in the RPM band!
Hmmmmmm, where would I rather have my Max torque, Early or later in the RPM band?
Defenetly EARLY in the RPM band!
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Just because a 351 isnt peaking at 1500 doesnt mean its not making around the same torque that a 300 is at 1500. Hell, a 5.0 HO makes around 230 lb-ft at 1300 rpm...a 351 is bound to be better than a 5.0 since its got a longer stroke. And this guy doesnt just want torque, he wants power too...something thats no more cost-effective with a 300 than it is with a 351.
Respectfully,
Respectfully,
Postmaster
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From: La Verne, California
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Ah yes, stump pulling, gregravitating planet earth, and pulling houses off their foundations are all the 300s forte. torque torque torque. torque everwhere...Power is the problem...at least, from what ive seen and felt with my own 300 (which is stock), and i know youre alot more experienced with this stuff than i am. I just know that the 302 HO in my 93 LX Mustang makes +/- 5-10 ft-lb of torque and +/- 5-10 hp below 2000 rpm than my 300 (i.e, not eath shatteringly huge) and past 2000 its no contest. Adding i believe another inch of stroke to that (to make a 351) can only make it that much better. if i wanted cheap torque id go for a 300 hands down, but if i have a little money to spend and i want torque AND power, i'd go for a 351.
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btw im really not into the whole internet flaming / bashing thing so ill just leave it at that. its obvious we just hav a difference of opinion and i dont want to **** a brick over something that simple. theyre both great motors, just at different things.
Postmaster
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From: La Verne, California
All I know is this, & who the Bloody 'ell is Flaming anyone here, that when you put an Offenhauser "DP" Intake w/ a 390-600cfm Holley w/ a Header, w/ oversized valves & stiffer springs, the 300 I-6 is 1/2 way down the road in a light to light heat, while the v-8 is only 1/4 way off the line attempting to catch up.
yes, we do see things differently, you've an Opinion, while I've a Point-of-View of this issue.
yes, we do see things differently, you've an Opinion, while I've a Point-of-View of this issue.
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From: Lathrop, MO
Mudder460 are you talking a trailered mud racer or streetable crawler?
Both can be done with a healthy application of cash. Would a 351w be chaper to build for either, probably. Which will get more respect, if done right, my money is on the 300.
Just like any other engine you need to determine your project budget and target power band.
Both can be done with a healthy application of cash. Would a 351w be chaper to build for either, probably. Which will get more respect, if done right, my money is on the 300.
Just like any other engine you need to determine your project budget and target power band.
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Originally Posted by Col Flashman
All I know is this, & who the Bloody 'ell is Flaming anyone here, that when you put an Offenhauser "DP" Intake w/ a 390-600cfm Holley w/ a Header, w/ oversized valves & stiffer springs, the 300 I-6 is 1/2 way down the road in a light to light heat, while the v-8 is only 1/4 way off the line attempting to catch up.
yes, we do see things differently, you've an Opinion, while I've a Point-of-View of this issue.
yes, we do see things differently, you've an Opinion, while I've a Point-of-View of this issue.
In addition, I would like to note the horespower and torque ratings that came from Ford for these motors. Examples are from the 1994 model year.
300 I6 - 145 HP @ 3400 RPM and 265 Ft/Lb Torque @ 2000 RPM
351 V8 - 210 HP @ 3800 RPM and 325 Ft/Lb Torque @ 2800 RPM
Postmaster
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From: La Verne, California
Originally Posted by 1994 F250: 351, C6
In response to your comment on how a modified I6 like the one you are describing will be a V8 in a drag race, the 300 may turnout a good performance next to a truck with a 351W, but you are kidding yourself if you think you can take on a moderately built 351W with that setup. You will get stomped if the trucks are comparably equiped otherwise. I am not saying that the 300 is a bad motor, I think it is an awesome motor, however, I do beleive a V8 is better for some things.
In addition, I would like to note the horespower and torque ratings that came from Ford for these motors. Examples are from the 1994 model year.
300 I6 - 145 HP @ 3400 RPM and 265 Ft/Lb Torque @ 2000 RPM
351 V8 - 210 HP @ 3800 RPM and 325 Ft/Lb Torque @ 2800 RPM
In addition, I would like to note the horespower and torque ratings that came from Ford for these motors. Examples are from the 1994 model year.
300 I6 - 145 HP @ 3400 RPM and 265 Ft/Lb Torque @ 2000 RPM
351 V8 - 210 HP @ 3800 RPM and 325 Ft/Lb Torque @ 2800 RPM
Don't tell me What I've Seen or Done & What I've Not Seen or Not Done w/ the 300 I-6 against v-8's in a Light to Light Heat & I'll not tell you how to Raise your Children, don'tcha know.
And what you've listed for ratings here, is not what I've see on actual Dyno readings for these engines, especially w/ the '65-'72 series asperated engines.
