Which clutch?
Thread Starter
|
Tuned
Joined: Aug 2019
Posts: 253
Likes: 4
Which clutch?
I’m wondering which clutch I should use for my truck I just picked up the new 300 straight six for my truck and the motor is from 1980 with a aluminum bell housing my truck has the 1966 factory 4spd in it and I measured the bell housing and my transmission and it will bolt to it and the shaft coming from the front of the transmission is long enough to work with the bell housing and motor the 1980 motor and my truck both had mechanical clutches so I guess my question is which clutch should I use the one from 1980 or the 1966 style clutch but I guess it may depend on fly wheel possibly not to sure?
Thread Starter
|
Tuned
Joined: Aug 2019
Posts: 253
Likes: 4
you are right the 80 is diaphragm which would be better for my truck as my truck won’t be pulling a trailer or hauling anything heavy it’s just gonna be a cruiser I was thinking about using the 66 style because I have a new one in box that I bought for my 67 f250 but rock auto says the 66 and 67 clutches are the same I’ll just have to order another for my 67 if I use the the 3 finger one
More Turbo
Joined: Nov 2019
Posts: 546
Likes: 74
From: Point Washington
I ordered a 1983 351W clutch when i was installing the NP435 transmission. Its a diaphragm type pressure plate. However, it won't bolt up to my 1978 302 flywheel. Since the original pressure plate was fine, I re-used it and just installed the new disc, throwout bearing, and pilot bushing.
You may want to check before you order.......
You may want to check before you order.......
Thread Starter
|
Tuned
Joined: Aug 2019
Posts: 253
Likes: 4
I ordered a 1983 351W clutch when i was installing the NP435 transmission. Its a diaphragm type pressure plate. However, it won't bolt up to my 1978 302 flywheel. Since the original pressure plate was fine, I re-used it and just installed the new disc, throwout bearing, and pilot bushing.
You may want to check before you order.......
You may want to check before you order.......
Thread Starter
|
Tuned
Joined: Aug 2019
Posts: 253
Likes: 4
I just need to know which one fits and will be best for my application
Trending Topics
More Turbo
Joined: Nov 2019
Posts: 546
Likes: 74
From: Point Washington
Which one fits, depends on your flywheel.
At least on this particular 302, the flywheel is drilled for the Borg and Beck (3 finger) flywheel, and not the diaphragm style.
Then again, it could just be this particular pressure plate.
At least on this particular 302, the flywheel is drilled for the Borg and Beck (3 finger) flywheel, and not the diaphragm style.
Then again, it could just be this particular pressure plate.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Tuned
Joined: Jan 2007
Posts: 339
Likes: 101
From: Salkum
I’m going through this right now and I’m changing from the three finder to the diagram style on my 300 six in my 1965 f100.
I got a new flywheel from NAPA with ring gear for $75 and the diaphragm clutch kit was $150.
Im working on rebuilding the Z-bar and the rest of the clutch linkage.
The reason I went with the diaphragm was from past experience back in 1985 when I put the last clutch in. I had to go through a stack of remanufactured pressure plates to get one that the fingers were all the same height after bolting the pressure plate to the flywheel.
I got a new flywheel from NAPA with ring gear for $75 and the diaphragm clutch kit was $150.
Im working on rebuilding the Z-bar and the rest of the clutch linkage.
The reason I went with the diaphragm was from past experience back in 1985 when I put the last clutch in. I had to go through a stack of remanufactured pressure plates to get one that the fingers were all the same height after bolting the pressure plate to the flywheel.
Senior User
Joined: Dec 2018
Posts: 243
Likes: 4
From: Elizabeth
The reason I went with the diaphragm was from past experience back in 1985 when I put the last clutch in. I had to go through a stack of remanufactured pressure plates to get one that the fingers were all the same height after bolting the pressure plate to the flywheel.
It sounds like the OP has a clutch for an earlier application, why not unbox that cover and try to hang it on the 1980 flywheel and let the world know if the mate?
Edit:
Quickly looking in some books, looks like late 60's trucks with 300-6 used an 11" clutch that is the Long type. The 80's 300-6 trucks could have either a 10" Long pattern or 11" with the Borg and Beck pattern. Again any of these are available today in a finger or diaphragm type replacement.
But again, in 40-55 years any mix and match could have occurred, so per my comment above, the only way to know if the clutch you have will work, is to try.
Thread Starter
|
Tuned
Joined: Aug 2019
Posts: 253
Likes: 4
Update
I tested the 66 style 3 finger clutch on the 1980 motor that has the diaphragm style the 66 clutch is a 11 inch clutch and the 1980 motor has a factory 10 inch clutch so it will not work and the bolt hole are off by half a inch so I guess I will go with the diaphragm style for my truck and I did the measuring on my 66 4spd transmission and it will work is there anything special or little I will need to change like linkage or something
Thread Starter
|
Tuned
Joined: Aug 2019
Posts: 253
Likes: 4
yes it is I think that was the factory f100 transmission in 66 and yes it has a mount that connects to the crossmember at the back of the transmission
Thread
Thread Starter
Forum
Replies
Last Post
Ctjkre
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
0
Jun 6, 2019 06:33 AM
76WYOF250
1973 - 1979 F-100 & Larger F-Series Trucks
1
Jul 10, 2014 02:12 AM
Jeff Van Housen
Clutch, Transmission, Differential, Axle & Transfer Case
4
Nov 2, 2005 01:32 AM
gdaf
1999 - 2003 7.3L Power Stroke Diesel
2
Oct 14, 2001 04:53 PM