Header problem
Thread Starter
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Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
Header problem
Hey, I'm having a problem with my headers and the clutch rod on my 1978 351 F150 4x4. With the headers in the clutch rod wont move far enough to fully disengage. I tried bending the headers some but it doesn't work.
Another thing, with the 4-speed manual trans. in third gear it rattles like crazy. If i hit the right rpm it pops out! Is this the throwout bearing? HELP!
Another thing, with the 4-speed manual trans. in third gear it rattles like crazy. If i hit the right rpm it pops out! Is this the throwout bearing? HELP!
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Header problem
Trever, just get rid of the manual shift tranny, and put in a C6. Any fullsize 23 year old truck with a big ol V8 in it should be able to shift it's on tranny. :-)
John
jowilker
Club FTE since 01 01
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
John
jowilker
Club FTE since 01 01
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Cargo Master
Joined: Jul 2000
Posts: 2,281
Likes: 18
From: Northern California
Header problem
If the NP435 kicks out of gear, I think the gears are bad inside. The throw out bearing won't do this. I bought a used tranny for my car once and it would kick out of 2nd when you drop speed.
I don't know about the headers, but I had a set where I had to bend a tab on the shifter and another set where I had to bang one header pipe to clear a carb.
I don't know about the headers, but I had a set where I had to bend a tab on the shifter and another set where I had to bang one header pipe to clear a carb.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Header problem
Matt, It is much easier to go in that direction than the other. You'll need the steering column, shifting linkages, kickdown, flexplate, tranny, and driveshaft.
You'll have to remove existing, driveshaft, tranny, bell, clutch assembly, flywheel, pilot bearing, clutch linkages and pedal, steering column etc.
A little insite. ;-)
John
jowilker
Club FTE since 01 01
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
You'll have to remove existing, driveshaft, tranny, bell, clutch assembly, flywheel, pilot bearing, clutch linkages and pedal, steering column etc.
A little insite. ;-)
John
jowilker
Club FTE since 01 01
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Post Fiend
Joined: Sep 2000
Posts: 8,238
Likes: 3
From: Oregon
Header problem
REAL men bang through their own gears. You'd never get me to give up any horse and torque for a slush auto. Yup, your gears might be bad, or check your linkages and make sure they are fully shifting it into gear in the first place. Sometimes if your linkages aren't adjusted they won't kick it fully into gear and it will pop back out.
If your knuckles ain't bleeding you did something wrong.
'72 F-250 "Hi-Boy" 4x4, Dana 60/HD44, FE390 @ 400hp(purt near!), 4-speed, custom suspension w 4" lift, black on black.
If your knuckles ain't bleeding you did something wrong.
'72 F-250 "Hi-Boy" 4x4, Dana 60/HD44, FE390 @ 400hp(purt near!), 4-speed, custom suspension w 4" lift, black on black.
Junior User
Joined: Apr 2000
Posts: 96
Likes: 0
Header problem
Automatic is cheese...... real men grind gears!! If your NP435 is popping out of gear check the linkage and then replace the trans with another NP435 if it does end up being the source of the problem. They're rugged units and they look wild with the shift lever that comes up to the height of the steering column!
Adam
http://www.crosswinds.net/~ajhickey/trucks/1975ford/1975ford.html
Adam
http://www.crosswinds.net/~ajhickey/trucks/1975ford/1975ford.html
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Thread Starter
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Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
Header problem
Id like to keep the manual trans., but how do i check to see if its fully in gear?
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Post Fiend
Joined: Sep 2000
Posts: 8,238
Likes: 3
From: Oregon
Header problem
Crawl under their and have somebody shift it (yes, that would be WITHOUT the truck running), and watch to see how far the linkage moves the tabs on the box...if it only moves them a little bit adjust the linkage until you get a firm shift.
If your knuckles ain't bleeding you did something wrong.
'72 F-250 "Hi-Boy" 4x4, Dana 60/HD44, FE390 @ 400hp(purt near!), 4-speed, custom suspension w 4" lift, black on black.
If your knuckles ain't bleeding you did something wrong.
'72 F-250 "Hi-Boy" 4x4, Dana 60/HD44, FE390 @ 400hp(purt near!), 4-speed, custom suspension w 4" lift, black on black.
Freshman User
Joined: Oct 2000
Posts: 36
Likes: 0
Header problem
I just had mine NP435 rebuilt it was doing similar things it needed bearings and there is a plastic guide clip that can raise hell with proper shifting I think its worth keeping and worth the money to have it done rather than buy another used "problem"
hyena
71 F-250 Highboy 35x12.5x16.5
70 F-250 Ranger XLT Camper Special
71 F-100 Ranger "Parts"
hyena
71 F-250 Highboy 35x12.5x16.5
70 F-250 Ranger XLT Camper Special
71 F-100 Ranger "Parts"
Cargo Master
Joined: Aug 2000
Posts: 2,931
Likes: 12
From: SW Michigan
Header problem
twags6- what brand of headers are you trying?Some brands fit much better than others. Stan's and Sandersons seem to be very well thought of, John has hookers and from his comments I certainly would not try that brand. DF
Elder User
Joined: Aug 1999
Posts: 910
Likes: 0
Header problem
Am I barkin up the wrong tree or does the NP435 have an integral tower shifter out of the top of the case? Some of you guys are refering to the shiftlinkages and tabs on the side of the tranny. I thought the NP435 was like my T18 (or my T-5) with the shifter going directly into the top of the tranny? I had a tranny shop test drive my T18 and they wanted to replace the shifter, saying mine was sloppy and would eventually have the truck comeing out of gear. I haven't looked yet bet I've heard theres a role pin in the shifter tower that wears out. Perhaps you can get creative with the clutch linkages or even figure out a retrofit for going to a hydraulic clutch or cable clutch. I saw a Mustang mag that featured a guy in SanDiego that makes a hydraulic clutch retrofit for putting T5's in old Mustangs and ditching the rod linkage setup (very similar to the truck setup).
Fleet Mechanic
Joined: Nov 1999
Posts: 1,415
Likes: 0
From: Lower 48
Header problem
I think I have to agree with BBT, if it's a 4 speed TRUCK tranny it should have the shifter coming out of the top of the trans and not have any linkages. The only thing that should be capable of being adjusted on this rig is the clutch.
It sounds like a simple case of a worn trans to me.
Trail Rider
It sounds like a simple case of a worn trans to me.
Trail Rider
Thread Starter
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Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
Header problem
I assume since everyone is talking about the NP435 tranny, thats whats in the truck. If the gears are worn, is it worth having them fixed or should i get a new tranny?