460 in 56
old and in the way
Joined: Jul 1997
Posts: 5,921
Likes: 1,052
From: Lovely Hueytown Alabama
460 in 56
Bill,
might as well add my 20 gallons... give some thought to your front suspension...
I'm doing a 460 in a 53. there is plenty of room with a MII suspension... take care with a Volare clip and headers... it gets a little tight.. hence my article on removing a Volare and replacing with a MII unit..
as for gears, I'm running 3.00 posi unit... sadly it isn't on the road yet but calculates as follows
mph = 60 engine rpm 2286
mph = 65 engine rpm 2472
mph = 70 engine rpm 2662
mph = 75 engine rpm 2852
not bad crusin rpms at all !!!
you can calculate your cruise rpm with the following formula
road speed x gear ratio x 336 (constant) divided by tire diameter
i.e.
60 mph(speed) x 3.0 (gear ration) = 180 x 336(constant) = 60,480
60,480 divided by 26.5(tire diameter = 2282.26 rpms
just plug in your different road speeds and you can figure them all.. an excel spread sheet makes it easier...
hope that helps
john
too cool for high cruise rpms
BTW if I can afford to build the truck I can dang sure afford to drive it.... even without Purples pipeline
might as well add my 20 gallons... give some thought to your front suspension...
I'm doing a 460 in a 53. there is plenty of room with a MII suspension... take care with a Volare clip and headers... it gets a little tight.. hence my article on removing a Volare and replacing with a MII unit..
as for gears, I'm running 3.00 posi unit... sadly it isn't on the road yet but calculates as follows
mph = 60 engine rpm 2286
mph = 65 engine rpm 2472
mph = 70 engine rpm 2662
mph = 75 engine rpm 2852
not bad crusin rpms at all !!!
you can calculate your cruise rpm with the following formula
road speed x gear ratio x 336 (constant) divided by tire diameter
i.e.
60 mph(speed) x 3.0 (gear ration) = 180 x 336(constant) = 60,480
60,480 divided by 26.5(tire diameter = 2282.26 rpms
just plug in your different road speeds and you can figure them all.. an excel spread sheet makes it easier...
hope that helps
john
too cool for high cruise rpms BTW if I can afford to build the truck I can dang sure afford to drive it.... even without Purples pipeline
Posting Guru
Joined: Jul 2001
Posts: 2,119
Likes: 2
From: Southern New Hampshire
460 in 56
Consider a 70's 460 LTD as a complete donor if you are away from the rot belt. The front clip can be adapted, you get the front discs and HD suspension along with steering and no motor mount problems.
Im still anti M11 in a truck and a heavy motor just increases that feeling.
If you want to keep the F100 frame uncut then consider the Dakota swap; those are popular and a crossmember is available thru "http://www.industrialchassisinc.com"
A real truck wants a real suspension.
A friend has a 460 in his 55 and had to go with 2.75 gears in order to get traction. It tows a boat on the interstates or up windy mountain road just fine with a bed full of gear.
Im still anti M11 in a truck and a heavy motor just increases that feeling.
If you want to keep the F100 frame uncut then consider the Dakota swap; those are popular and a crossmember is available thru "http://www.industrialchassisinc.com"
A real truck wants a real suspension.
A friend has a 460 in his 55 and had to go with 2.75 gears in order to get traction. It tows a boat on the interstates or up windy mountain road just fine with a bed full of gear.
Tuned
Joined: Jan 2003
Posts: 486
Likes: 66
From: South Carolina
460 in 56
Bill,
you won't have to worry about space limitations under your hood.There is enough room left over under my hood,I was thinking about adding a 302.Ya know, like boats use trolling motors?
Then I could go trolling for chickens up in Iowa.I hear they love them 302's up there.
you won't have to worry about space limitations under your hood.There is enough room left over under my hood,I was thinking about adding a 302.Ya know, like boats use trolling motors?
Then I could go trolling for chickens up in Iowa.I hear they love them 302's up there.
Lead Driver
Joined: Aug 2002
Posts: 6,682
Likes: 12
From: Saskatoon SK Canada
460 in 56
Yeesh Purple55 with these last posts of yours uping 'fenders when ever you can. Not that I care but you may be asking for it....You may find a german potato shoved up your tailpipe by a wellknown Iowa guy.
Elder User
Joined: Sep 2002
Posts: 948
Likes: 0
From: McAlester, OK
460 in 56
I'm kind of hesitant of using a Dakota after a ride in one this summer. At my summer job they had an '86 outfitted with a tool box and a small air compresser that they used to change tires with. Well on the highway it would, not always though, do this swaying thing that's like...well it acts like the front end is about to fly off the ground like it's an airplane without wings or something. It felt like you were in the rodeo. Quit some fun until you realize that your in a vehicle travling at high speeds.
They messed with it all summer trying to figure out what was wrong. I figured it was the few hundred pounds extra pounds of weight, but then again it is a truck. The sway bar was checked, but no go. I think in the end it was that the tires were too big or something.
Clayton
They messed with it all summer trying to figure out what was wrong. I figured it was the few hundred pounds extra pounds of weight, but then again it is a truck. The sway bar was checked, but no go. I think in the end it was that the tires were too big or something.
Clayton
Tuned
Joined: Jan 2003
Posts: 486
Likes: 66
From: South Carolina
460 in 56
Nathan,
Farmall Boy deserves everything he gets.Like I said before--I got alotta ketchin up to do.
By the way, that would be an ear of corn up the tailpipe.He's from Iowa, not Idaho.
Farmall Boy deserves everything he gets.Like I said before--I got alotta ketchin up to do.
By the way, that would be an ear of corn up the tailpipe.He's from Iowa, not Idaho.
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New User
Joined: Sep 2003
Posts: 9
Likes: 0
460 in 56
Thank you for all the good advice. I want to stick with the straight axle with my 460. I like the way they look,they are strong and I'm not looking for a Cadillac ride. I was going to put mono leafs up front but I'm not reading much good about them on F.T.E. What do you think? BILL
Logistics Pro
Joined: Oct 2002
Posts: 4,489
Likes: 5
From: Valley Center, CA
460 in 56
My friend Steve does not care for the mono leaf on the front of his 56. So I would suggest trying the straight axle and see how you like it. If all the front end parts are in good mechanical condition you should be fine. Good Luck, John