Speed run

classic Classic list List threaded Threaded
8 messages Options
Reply | Threaded
Open this post in threaded view
|

Speed run

BullnoseLuvr
I got new tires on feets and took him out for a speed run.  On flat ground he tops out at 85, according to Waze.  I hit 90 on a short downhill.  At full throttle top speed there was minor bucking and at normal highway speeds I get 11MPG.  It's the two barrel 351 with feedback carb and all emissions controls in place and functioning except the Air pump.  Is this typical performance?

Thanks,

Mark
‘84 F150 4x4 351W 4sp. Regular cab, long bed, all original. '69 Continental MK III. Older restoration. '95 Saab 900S Convertible. '05 Saab 9-3 ARC Convertible 2.0T. Lime Yellow. '09 Saab 9-3 AERO Convertible 2.8T. Sand Beige top. '13 MINI Cooper Factory JCW 6sp. '01 H-D Sportster. '03 Yamaha FZ-1.
Reply | Threaded
Open this post in threaded view
|

Re: Speed run

Rembrant
BullnoseLuvr wrote
I got new tires on feets and took him out for a speed run.  On flat ground he tops out at 85, according to Waze.  I hit 90 on a short downhill.  At full throttle top speed there was minor bucking and at normal highway speeds I get 11MPG.  It's the two barrel 351 with feedback carb and all emissions controls in place and functioning except the Air pump.  Is this typical performance?

Thanks,

Mark
Mark,

What transmission, rear end gears, and tire size? What RPM were you running?

That speed seems about right to me. I know my little 2wd Flareside will do 90, but it has very long legs with a 5spd and 3.08 gears.
1994 F150 4x2 Flareside. 5.0 w/MAF, 4R70W, stock.
1984 F150 4X2 Flareside. Mild 302 w/ 5spd. Sold.
1980 F150 4X4 Flareside. 300i6 w/ 5spd. Sold in 2021.
1980 F100 4X2 Flareside. 351w/2bbl w/NP435. Sold in 1995

Reply | Threaded
Open this post in threaded view
|

Re: Speed run

BullnoseLuvr
Rembrant wrote
BullnoseLuvr wrote
I got new tires on feets and took him out for a speed run.  On flat ground he tops out at 85, according to Waze.  I hit 90 on a short downhill.  At full throttle top speed there was minor bucking and at normal highway speeds I get 11MPG.  It's the two barrel 351 with feedback carb and all emissions controls in place and functioning except the Air pump.  Is this typical performance?

Thanks,

Mark
Mark,

What transmission, rear end gears, and tire size? What RPM were you running?

That speed seems about right to me. I know my little 2wd Flareside will do 90, but it has very long legs with a 5spd and 3.08 gears.
It's got a 4spd (T19 I think) with granny gear, I don't remember the axle ratios, tires are 215/75 15, and if I remember correctly it runs 3000 at 73mph.

Mark
‘84 F150 4x4 351W 4sp. Regular cab, long bed, all original. '69 Continental MK III. Older restoration. '95 Saab 900S Convertible. '05 Saab 9-3 ARC Convertible 2.0T. Lime Yellow. '09 Saab 9-3 AERO Convertible 2.8T. Sand Beige top. '13 MINI Cooper Factory JCW 6sp. '01 H-D Sportster. '03 Yamaha FZ-1.
Reply | Threaded
Open this post in threaded view
|

Re: Speed run

1986F150Six
Administrator
In reply to this post by Rembrant
Rembrant wrote
That speed seems about right to me. I know my little 2wd Flareside will do 90, but it has very long legs with a 5spd and 3.08 gears.
Cory, is the top speed in 4th?
Reply | Threaded
Open this post in threaded view
|

Re: Speed run

Bisquik1959
This post was updated on .
I would need to turn on the GPS and see how far it goes past the speedo and of course without getting a ticket! Mine is a 83 F100 with the 5.0, AOD and 3.55's and 215/75/15 tires. I cruise daily between 75 to 85 on flat and hilly terrain and it has plenty of pedal to go. 75mph is just about 2250rpms. I would guestimate low triple digits wouldnt be that hard.
"Dumpy" 1983 F100
1986 Bronco II crawler

"Oh Blessed Lady of Acceleration... dont fail me now!" - Elwood Blues
Reply | Threaded
Open this post in threaded view
|

Re: Speed run

Bisquik1959
This post was updated on .
Gave it a short burst today and kept her in overdrive. Pulled off 95 at a little over 3k rpms with plenty to go. Traffic kept me from giving her it all, but low triples should be easy. Guess it all depends on gearing and transmission  choice.

"Dumpy" 1983 F100
1986 Bronco II crawler

"Oh Blessed Lady of Acceleration... dont fail me now!" - Elwood Blues
Reply | Threaded
Open this post in threaded view
|

Re: Speed run

grumpin
Surprised you didn’t have trim and panels flying off!

Poor thing, probably scared it to death!
Dane
1986 F250HD SC XLT Lariat 4x4 460 C6-Sold
1992 Bronco XLT 4x4 351W E4OD
1998 GMC Sierra SLE K1500 350 4L60E
Arizona
Reply | Threaded
Open this post in threaded view
|

Re: Speed run

Nothing Special
In reply to this post by Bisquik1959
Back when I had my '85 F-250HD (351, NP435 4 speed, 3.55 gears, LT255/85R-16 tires) The one time I tried to top it out was between 90-95 MPH.  But that was in 4WD on a snow covered somewhat winding 2 lane in the UP of Michigan at 2:00 in the morning   It likely would've gone faster under better circumstances.  (I was MUCH younger then )
Bob
Sorry, no '80 - '86 Ford trucks
"Oswald": 1997 F-250HD crew cab short box, 460, E4OD, 4.10 gears
"Pluto": 1971 Bronco, 302, NV3550 5 speed, Atlas 4.3:1 transfer case, 33" tires
"the motorhome": 2015 E-450-based 28' class C motorhome, 6.8L V-10
"the Dodge": 2007 Dodge 2500, 6.7L Cummins