460 Redlines @ ?
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Senior User
Joined: Nov 2001
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From: Pueblo West USA
460 Redlines @ ?
I want to get a tach for my truck. I'd be interested in your opinions on the following:
What is a good quality meter?
Where did you mount yours? (The TACH, you dirty old man!)
What is the redline for the 460 motor? I'm pretty sure mine's a '76 460 if that makes any difference. Perhaps that info is included with the tach...
Any help you can give me would be greatly appreciated!
What is a good quality meter?
Where did you mount yours? (The TACH, you dirty old man!)
What is the redline for the 460 motor? I'm pretty sure mine's a '76 460 if that makes any difference. Perhaps that info is included with the tach...
Any help you can give me would be greatly appreciated!
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460 Redlines @ ?
[updated:LAST EDITED ON 15-Jan-02 AT 07:19 PM (EST)]A " SUN "
On the steering column.
I'd say 7500-8800 should be close.
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
On the steering column.
I'd say 7500-8800 should be close.
Dennis
Oh....Please Don't Ask Me Any Tough Questions As:
"I'm Saving Up MY Memory For When I Develop Alzheimer's"
78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
Elder User
Joined: Jun 1999
Posts: 861
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From: SE PA
460 Redlines @ ?
Another good one is Autogage, if you have an aftermarket ignition system, some of the tachs have problems with them (make sure to ask if it will work with your system if you do).
Column.
I wouldn't try for much past 5000-5500 rpm max, you can wind them a little higher, but why?
Column.
I wouldn't try for much past 5000-5500 rpm max, you can wind them a little higher, but why?
Lead Driver
Joined: Mar 2000
Posts: 9,359
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From: Hampstead, NC
460 Redlines @ ?
I've got an Autometer 5" monster tach mounted to the steering column just below the shift collar. It mounts with a hose clamp. I've run the 460 in my 79 (transplanted from a 74 lincoln) up to about 5200 rpm. Don't think I'd take a stock 460 much higher than that.
Senior User
Joined: Mar 2000
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460 Redlines @ ?
Dont worry about things like redline.
if the engine doesnt want to rev anymore it wont.
LOL>J/K
PEak HP is measured in the mid 4000 for RPM 4400-4600
so going much higher than that doesnt really benefit you.
if the engine doesnt want to rev anymore it wont.
LOL>J/K
PEak HP is measured in the mid 4000 for RPM 4400-4600
so going much higher than that doesnt really benefit you.
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Senior User
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From: Pueblo West USA
460 Redlines @ ?
[updated:LAST EDITED ON 16-Jan-02 AT 09:31 AM (EST)]LOL so somwhere between 4000 and 8000 is what I'm hearing!
Thats more of a red ZONE than a red line! Guess I'll just get the tach and see what happens. At least I'll try not to rev it like my old crotch rocket! (11,000rpm)
Thanks for the help, guys. I appreciate it.
Thats more of a red ZONE than a red line! Guess I'll just get the tach and see what happens. At least I'll try not to rev it like my old crotch rocket! (11,000rpm)
Thanks for the help, guys. I appreciate it.
Posting Guru
Joined: Jul 2001
Posts: 1,613
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From: Gainesville, FL
460 Redlines @ ?
Ugly,
I've really messed with stock motors over the years and our vintage motors start to see valve float as early as 4500 RPMs. You'll get up to 5500, no problem. After that your pushing it, and could see valvetrain failure if you've got a valve out of adjustment.
Note: Most motors run there most efficient around 2500 RPMs. Oiling benefits start to drop off after that and metal to metal contact starts by 2900 RPMs. I know this seems hard to believe but, oil additive dyno testing has shown it. The 460 is not a strong example of a "bore over stroke" motor and is not designed to turn up the RPMs. If you can design your power band in the bottom RPM range you'll be better off. That motor is capable of pulling stumps at an idle. Now if we could just get them to pull a gas station along we'd all be set.
Good Luck, Have Fun,
KingFisher
I've really messed with stock motors over the years and our vintage motors start to see valve float as early as 4500 RPMs. You'll get up to 5500, no problem. After that your pushing it, and could see valvetrain failure if you've got a valve out of adjustment.
Note: Most motors run there most efficient around 2500 RPMs. Oiling benefits start to drop off after that and metal to metal contact starts by 2900 RPMs. I know this seems hard to believe but, oil additive dyno testing has shown it. The 460 is not a strong example of a "bore over stroke" motor and is not designed to turn up the RPMs. If you can design your power band in the bottom RPM range you'll be better off. That motor is capable of pulling stumps at an idle. Now if we could just get them to pull a gas station along we'd all be set.
Good Luck, Have Fun,
KingFisher
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Senior User
Joined: Aug 2001
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From: Six Shooter Junction
460 Redlines @ ?
Do you have a link or anything with info about "metal to metal" at 2900rpm. There are alot of people out there including me with 3 speed trannys and cruise on the highway around that rpm.
Chase
1979 F-250 4x4
71 460 Holley650, MSD OFFROAD, L&L Headers
C6-B&M Transpack
Dana HD44Front/60Rear
35 inch Goodyear Implement Tires
4 inch Skyjacker System
Much more to come
Chase
1979 F-250 4x4
71 460 Holley650, MSD OFFROAD, L&L Headers
C6-B&M Transpack
Dana HD44Front/60Rear
35 inch Goodyear Implement Tires
4 inch Skyjacker System
Much more to come
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Elder User
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From: Corydon US of A
460 Redlines @ ?
VDO good price, good quality, good look. Autometer is highly recommended on my list too. i mounted mine in the corner of the window and dash pad, easy to see and looks good from the out side of the truck. Not sure about what the redline is on my truck, but i'm pretty sure i spend a lot of time around there
P.S. Valves floating= natures way of sayin "Thats all there is!"
P.S. Valves floating= natures way of sayin "Thats all there is!"
Elder User
Joined: Jul 2001
Posts: 581
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From: Milton, Wa
460 Redlines @ ?
On my '78 F250 4x4, I have a 460 with 4'10s & 33" tires. At 70 I am turning 3200 RPM. Is that bad? Would swapping 3.73 gears be better on my engine? It is used for a daily driver for 95% of the year, but occasionally I take my 10.5' camper and Vintage Bronco to the hills (about 10 times a year..).
Ryan.
78 F250 Ranger XLT Supercab 4x4
460, C6, NP205, D44, D60, 4.10's, 33x12.50x16.5 tires
71 Bronco, 302, C4, PS, PDB (1/2 complete with rebuild)
Ryan.
78 F250 Ranger XLT Supercab 4x4
460, C6, NP205, D44, D60, 4.10's, 33x12.50x16.5 tires
71 Bronco, 302, C4, PS, PDB (1/2 complete with rebuild)
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
460 Redlines @ ?
Damn, You boys like to flog your mules to death. I'd set the red line at 4000, and if some little pocket rocket was trying to eat your lunch hitting 42-4300 wouldn't kill it. There is No reason in the world to turn a street 460 truck engine over 4500 rpms. If you had something like a 3.00 gear 4500 would be way past the nose bleed section in high gear.
Again for street use the little Sun repro at Autozone is a good choice. For a race engine all of the Winston Cup boys use Auto Meters. Buy what your allowance allows.
I have the tach in my truck set at 4000, the factory line on my Taurus is 5500, my sons SVT Contour is 6700. That thing doesn't have any torque but will build some Rs and send the speedo into orbit.
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John
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In the cool still quiet of night, you can hear chevies rusting away.
Again for street use the little Sun repro at Autozone is a good choice. For a race engine all of the Winston Cup boys use Auto Meters. Buy what your allowance allows.
I have the tach in my truck set at 4000, the factory line on my Taurus is 5500, my sons SVT Contour is 6700. That thing doesn't have any torque but will build some Rs and send the speedo into orbit.
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John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
Senior User
Joined: Oct 2000
Posts: 219
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From: Richmond USA
460 Redlines @ ?
Here is the Piston Speed formula to calculate
an egines safe RPMs.
Different "stock" Ford engines have different maximum rpms based on piston
speed:
289 - 7,317 rpm max
302/5.0 - 7,000 rpm
351 - 6,000 rpm
390 - 5,556 rpm
400 - 5,250 rpm
428 - 5,276 rpm
460 - 5,455 rpm
(Some high performance "stock" engines have forged cranks and pistons and
could survive higher rpms than listed above, use the heavy duty formula for
those engines)
The formula for determing an engine's maximum rpm is:
Stock - 21,000 divided by the stroke
H.D. - 24,000 divided by the stroke
Race - 30,000 divided by the stroke
Dre'
1978 F-150, 460ci(750cfm,Edelbrock Performer,Dynomax Ceramic Coated headers,etc.)Auto-C6,373:1 - 9" Posi.
an egines safe RPMs.
Different "stock" Ford engines have different maximum rpms based on piston
speed:
289 - 7,317 rpm max
302/5.0 - 7,000 rpm
351 - 6,000 rpm
390 - 5,556 rpm
400 - 5,250 rpm
428 - 5,276 rpm
460 - 5,455 rpm
(Some high performance "stock" engines have forged cranks and pistons and
could survive higher rpms than listed above, use the heavy duty formula for
those engines)
The formula for determing an engine's maximum rpm is:
Stock - 21,000 divided by the stroke
H.D. - 24,000 divided by the stroke
Race - 30,000 divided by the stroke
Dre'
1978 F-150, 460ci(750cfm,Edelbrock Performer,Dynomax Ceramic Coated headers,etc.)Auto-C6,373:1 - 9" Posi.
New User
Joined: Jan 2002
Posts: 24
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From: Rapid City United States
460 Redlines @ ?
are those numbers for real? i've had a six and a 302 in my 78 and both seemed to be working really hard at 3000 rpm. i wouldn't mind running them 3,500 or 4,000 if i knew it wouldn't hurt them. thanks for the feedback
