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03-18-07, 10:47 PM
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#1 (permalink)
| | Forum Regular
Join Date: Feb 2007 Location: Austin, Texas
Posts: 59
| 2H, A440f vs H55f RPM at highway speeds
I've currently got an A440f and it's really not a bad tranny (for an automatic  ) in the 2H. At 2500 RPM in 4th I'm at about 72MPH (116KPH). I'm running stock tires/suspension.
I'm almost ready to start a frame swap and am contemplating switching from the A440f to an H55f (auto to manual) at the same time. Anyone with the 2H/H55F combo have any RPM numbers for highway speeds? Or how fast are you going at 2500 RPM in 5th?
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/ongoing . Green Hornet . 1987 HJ60 + 2H + A440f . 12HT exhaust manifold + turbo assembly in progress
/new . BIO Silver . 1987 FJ60 + 12HT + H55f --> ~HJ61 . daily driver
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03-19-07, 09:12 AM
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#2 (permalink)
| | Site Addict
Join Date: Sep 2002
Posts: 1,873
| Quote:
Originally Posted by integrin  I've currently got an A440f and it's really not a bad tranny (for an automatic ) in the 2H. At 2500 RPM in 4th I'm at about 72MPH (116KPH). I'm running stock tires/suspension.
I'm almost ready to start a frame swap and am contemplating switching from the A440f to an H55f (auto to manual) at the same time. Anyone with the 2H/H55F combo have any RPM numbers for highway speeds? Or how fast are you going at 2500 RPM in 5th? | about 100 KPH. for me it turns too high with 4.11 gears, and I am swapping in 3.73s.
cheers,
j
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turboed 84HJ60,
in San Diego.
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03-19-07, 09:42 AM
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#3 (permalink)
| | Forum Lifer
Join Date: Apr 2003 Location: Panamá
Posts: 11,866
| H55F have .84 5th gear ..
__________________ HJ-60 2H-T Intercooled Tencha
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Originally Posted by crushers if you are achieveing the max boost then it isn't the boost that is going to kill your engine... it is your right foot. | | |
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03-19-07, 05:34 PM
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#4 (permalink)
| | Forum Regular
Join Date: Dec 2006 Location: Vancouver BC
Posts: 218
| With 31" tires (but 1/2 worn out) I get similar numbers to your 4 speed. I was running from Seattle to Vancouver yesterday and played a bit with Speed and Rpm. From memory, 100 kph was about 2100 rpm and 120kph was around 2700 - I'll be on the highway tonight and I'll check and repost. I also only got about 18 mpg - maybe I should lean more towards the 100kmph than the 120
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1986 HJ60 5speed 24V. - OME 2.5 Heavy/Heavy, Vattiiva's, Aussielocker, more weird wiring than a boat...
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03-19-07, 08:21 PM
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#5 (permalink)
| | 250+ Club
Join Date: Sep 2004 Location: Jackson Hole, Wyoming
Posts: 304
| My HJ60 with H55F, 4.11s, and 33" tires does about 65-70mph/105-110kph at 2500. Maybe a hair less. I don't normally cruise at this RPM, though the motor is very quiet at 2500 with wide open throttle.
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have wrench, will travel....
'85 FJ60 ramjet 350, atlas 3.8, NV4500, Dana60s, 39.5" Swampers,hyrdo steer (SOLD)
'90 FJ62 135K, OME, 4.88s, roof tent
'06 Audi S4
'09 Dodge 2500 Diesel
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03-21-07, 09:17 PM
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#6 (permalink)
| | Forum Regular
Join Date: Dec 2006 Location: Vancouver BC
Posts: 218
| Checking again
2200 RPM 100Km/h
2500 RPM 110Km/h
2700 RPM 120Km/h
1500RPM 70Km/h
All speeds in 5th gear
Stock axles and 1/2 worn 31" tires
Hope this helps
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1986 HJ60 5speed 24V. - OME 2.5 Heavy/Heavy, Vattiiva's, Aussielocker, more weird wiring than a boat...
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03-21-07, 09:49 PM
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#7 (permalink)
| | Stand and deliver
Join Date: Jul 2003 Location: Perth Western Australia
Posts: 8,476
| Quote:
Originally Posted by integrin I've currently got an A440f and it's really not a bad tranny (for an automatic ) in the 2H. At 2500 RPM in 4th I'm at about 72MPH (116KPH). I'm running stock tires/suspension.
I'm almost ready to start a frame swap and am contemplating switching from the A440f to an H55f (auto to manual) at the same time. Anyone with the 2H/H55F combo have any RPM numbers for highway speeds? Or how fast are you going at 2500 RPM in 5th? | I think the final drive in A440 and H55f are the same or very close.
Try these online calculators to test your speedo and tacho. http://members.optusnet.com.au/~zerosin/gearcalc.html
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HZJ75 cab chassis 95 model ,stocker
FJ73+1HZ Diesel NEW GEARBOX
1HZ =same power as 3F with 30% better fuel economy
2in Dobinsons lift.Powerdown adj shocks
33 in BFG A/T
HJ61 with slidin windas  regrettfully SOLD:(
Holden Commodore V6
Honda XR650L | |
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03-21-07, 10:44 PM
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#8 (permalink)
| | Forum Regular
Join Date: Feb 2007 Location: Austin, Texas
Posts: 59
| Thanks, guys.
So it sounds like going from an A440f to an H55f is really more about the lower first gear than the benefit of an overdrive. I prefer MT's, and it's definitely the route I'll go when the automatic eventually goes, but I think I'll let it die with dignity after all.
Here are those gear ratios: A440f 1st2.950 2nd1.530 3rd1.000 4th0.717 R2.678 Tfr L1.959 H55f 1st4.843 2nd2.619 3rd1.516 4th1.000 5th0.845 R4.843 Tfr L2.296 And, for good measure, H42(1981+) 1st3.555 2nd2.292 3rd1.410 4th1.000 R4.271 Tfr L2.276 H41 1st4.925 2nd2.643 3rd1.519 4th1.000 R4.925 Tfr L1.992
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/ongoing . Green Hornet . 1987 HJ60 + 2H + A440f . 12HT exhaust manifold + turbo assembly in progress
/new . BIO Silver . 1987 FJ60 + 12HT + H55f --> ~HJ61 . daily driver
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03-22-07, 07:34 AM
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#9 (permalink)
| | Forum Lifer
Join Date: Apr 2003 Location: Panamá
Posts: 11,866
| I never know those numbers for A440 are great in 4th .. .717 sound great !
__________________ HJ-60 2H-T Intercooled Tencha
HDJ-80 1HD-T not stock at all ! Marilu
FZJ-80 1FZ-FE ready to Play ( wife rig ! )
Cruisers on my mind, blood and soul ! Join us at our local Panamá Off Road Forum Quote:
Originally Posted by crushers if you are achieveing the max boost then it isn't the boost that is going to kill your engine... it is your right foot. | | |
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03-22-07, 09:58 AM
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#10 (permalink)
| | Forum Regular
Join Date: Feb 2007 Location: Austin, Texas
Posts: 59
| Yeah, I didn't realize 4th gear was that long on the A440f either. Now I want a MT with a low first gear and a 0.717 top gear....time to start looking for a 6-speed.
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/ongoing . Green Hornet . 1987 HJ60 + 2H + A440f . 12HT exhaust manifold + turbo assembly in progress
/new . BIO Silver . 1987 FJ60 + 12HT + H55f --> ~HJ61 . daily driver
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03-24-07, 01:45 PM
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#11 (permalink)
| | Site Addict
Join Date: Jun 2003 Location: Maple Ridge, BC, Canada
Posts: 1,367
| "I never know those numbers for A440 are great in 4th .. .717 sound great !"
That explains a lot. my wife has the A440 and I almost thought it had an overdrive gear as it seems to 'double shift' from 3rd to 4th. Also, it is an absolute dog in 4th on hills.
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87 HJ60,2 x 86 HJ60 auto,73 FJ40, 82 BJ60, 89 FJ62, 89 300TD wagon and counting...
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03-24-07, 01:54 PM
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#12 (permalink)
| | Forum Regular
Join Date: Feb 2007 Location: Austin, Texas
Posts: 59
| Yeah, I only race people downhill with my A440. I just pretend I'm sight-seeing when I'm going up. 
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/ongoing . Green Hornet . 1987 HJ60 + 2H + A440f . 12HT exhaust manifold + turbo assembly in progress
/new . BIO Silver . 1987 FJ60 + 12HT + H55f --> ~HJ61 . daily driver
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