Transmission Durability
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CamperSpecialCruiser
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Transmission Durability
I have the NP435 transmission in my 68 Camper Special and I would like to know if it would hold up to a 427 with 500 horses. I don't want to wreck the tranny if it is too much. Anybody else have that much power on that tranny?
"I didn't mean to wreck him, I was just tryin to rattle his cage." D.E.
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heep70
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re: Transmission Durability
I don't think you will have a problem. 
Greg
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
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72hiboy4x4
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my question is why are you putting in a 427? Isn't that a Ch*vy engine?!?
and I wouldn't try any first gear burnouts if I were you! you'll twist the driveshaft into a pretzel, or worse!
and I wouldn't try any first gear burnouts if I were you! you'll twist the driveshaft into a pretzel, or worse!
In life many men take the path of righteousness, some take the path many others follow (G.M. owners, for example), some take a more arduous path, some a simpler path. I, sir, took the PSYCO-PATH!!
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heep70
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Its a modified Ford engine called the Poor Mans 427. Do a search on that.
Greg
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
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heep70
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- Location: Washington, Bonney Lake
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FORD428CJ is building one. haven't heard from him in a while.
Greg
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
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CamperSpecialCruiser
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- Location: Maine
re: Transmission Durability
It's a 427 out of a 67 fairlane. Sweet motor. 
"I didn't mean to wreck him, I was just tryin to rattle his cage." D.E.
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heep70
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re: Transmission Durability
Wanna trade for a 1.8 Subaru engine? Think of the gas you will be saving. 
Greg
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
1971 F250 "Highboy". SOLD to "Highboy_Firefighter_71"
2000 Subaru Outback limited.
2000 F250 4X4 PSD SuperDuty Crew.
2010 Polaris 800RMK Dragon 155"
2013 Polaris Pro 800 RMK 163"
1980 Built Toyota "Trail Rig".
My last 1971 "Highboy" pics
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Jake11
- Blue Oval Fanatic
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re: Transmission Durability
Tranny won't break. U-joint's you'll have to keep an eye on.
You probably got 18spline axles in that Dana. Watch that too.
You probably got 18spline axles in that Dana. Watch that too.
:):):)-
390Nut
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72hiboy4x4 wrote:my question is why are you putting in a 427? Isn't that a Ch*vy engine?!?
I've got a 1020cc engine that would be even better. Winds up to about 11 grand, too.heep70 wrote:Wanna trade for a 1.8 Subaru engine? Think of the gas you will be saving.
Doubt it would do it very quickly in a two ton vehicle, though
Paul
`69 F100 390 4spd driver
http://www.fordification.com/galleries/ ... ?cat=10251
Dura-Spark II Conversion info at:
http://home.comcast.net/~390nut/Dura-SparkII.htm
Pipes71 did once say, "bumps and bikes.. what a great combo!"
`69 F100 390 4spd driver
http://www.fordification.com/galleries/ ... ?cat=10251
Dura-Spark II Conversion info at:
http://home.comcast.net/~390nut/Dura-SparkII.htm
Pipes71 did once say, "bumps and bikes.. what a great combo!"
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Leadfoot
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re: Transmission Durability
I have a one tonne with a NP435, I can't see you wrecking one of these transmissions at all. I have seen my uncle do races with a one tonne with a built 390 (with around 475hp) fully loaded deck & high hab, with both duals smoking off street lights with no damage to the NP trans, but the drive shaft thats a deferent story. 
WHAT ?