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Hello folks,

I was wondering if anyone could tell me / show me the correct flywheel for a LA motor with a 2235714-1 bellhousing/ flywheel housing. I have a few here at the shop, one was on the truck and used a ~1/2" spacer on the starter so I assume it is from a later model than my '65 W100. I did find that there are a plethora of new flywheels to be had from Sachs, etc. so if need be I'll order up a new one. Also, I assume the three bolt starter can only be used on a 143-tooth flywheel? Is my assumption correct?

Thank as always for the help!

edit: I have been thinking about using a scatter-shield and welding brackets onto it for the x-member mounts so I can use the 10.5" flywheel that was previously used on my 408. I'd like to avoid fabricating all of this because I don't think it is necessary for the use of this truck. Any thoughts on this? If I made some brackets I'd make a few sets if anyone was interested in doing this swap.

Jeremiah

Jeremiah wrote: Also, I assume the three bolt starter can only be used on a 143-tooth flywheel? Is my assumption correct?

Jeremiah

My 78 has a 143 tooth flywheel and uses a 2-bolt starter. Mechanical bell.

The smallblock hydraulic truck bellhousings I've dealt with use a 172 tooth ring gear, not the 143 tooth which I think is for the mechanical bellhousings. Does your bellhousing wrap around between the block and the flywheel?

Yes it does. I will count the teeth on te flywheel but I'm pretty sure it is a 143 tooth unit. What I am most interested in is the crank flange to ring gear depth. From my measurements I'm guessing there must be at least a plus-1/2" difference for the hydor bell.

Anyone have an opinion?

The flywheel that I have is a 143 tooth model. The strange thing is that the bellhousing does not fit over the flywheel? Help!

Jeremiah wrote:The flywheel that I have is a 143 tooth model. The strange thing is that the bellhousing does not fit over the flywheel? Help!

That flywheel has a ring gear OD of 14.568" according to a McLeod flywheel catalog. It was introduced @ 69 with the mechanical clutch bellhousing set & used throughout the 70's, 80's, possibly later. Truck only. Both small & big block.

I believe one possibility is that the bellhousing you have may be for 3 & 4-speed passenger cars. They mostly had a 130 tooth flywheel that was 13.195" OD

For what its worth, the 172 tooth flywheel used behind the 426 HEMI (passenger car) had an OD of 14.640".....I don't think it interchanged with the 172 hydraulic clutch truck flywheel.

Bucky

Lets back up.....
What year truck are you working on?
John

The truck I amworking on is a 1965 model with the hydro clutch. Somewhere along the way someone installed a later model flywheel in it. There was a very crude 1/2" (approx) spacer sandwiched in between the starter and bellhousing so I'm pretty sure that the flywheel is incorrect. Hopefully that clarifies what we are dealing with here. The bellhousing I have is correct for the truck as far as I can tell....

That said, I know the flywheel is not a 130 toother out of a car. I have one sitting here on the bench from my old sleeper valiant. I also have a later model aluminum small block to NP 435 bellhousing under the bench that would be used in something with a mechanical (read not hydraulic) clutch setup. It is similar to the unit in my '70 W100 that uses a tail shaft located trans mount compared to my '65 W100 that uses the mid-mount off of the bellhousing with not trans mount on the rear of the housing.

If only I could find a picture/part number of the correct flywheel for the hydraulic clutch setup I'd at least have a direction to go in. At this point I have an idea of what I'm looking for but would like to be certain. The thought of putting everything back together and having issues is not pleasant!

Thanks to everyone for the insight!

Jeremiah wrote: The bellhousing I have is correct for the truck as far as I can tell....

The correct hydraulic clutch bell housing will be attached
to a cross member via a stud affixed to a rubber insulator
[one per each side]. Is this what you have?
John

John
I gave him the bell out of my 68 W200 that had a LA 318 NP435 figuring it would fit in place of the "boogered UP" one he had.
The one I gave him is the same as his old one, MINUS the back yard hack job, as the one he had (has a lip ALL the way around it). The one I gave him still had the isolators on it.
The Question(s) is/are what flywheel P/N to find, will a standard 2 bolt starter work in it AND, Can the flywheel be bolted on BEFORE putting the Bell on?
Thanks
Pat

MOPAT wrote:John
I gave him the bell out of my 68 W200 that had a LA 318 NP435 figuring it would fit in place of the "boogered UP" one he had.
The one I gave him is the same as his old one, MINUS the back yard hack job, as the one he had (has a lip ALL the way around it). The one I gave him still had the isolators on it.
The Question(s) is/are what flywheel P/N to find, will a standard 2 bolt starter work in it AND, Can the flywheel be bolted on BEFORE putting the Bell on?
Thanks
Pat

Yeah.... I just needed [for my own sake] to confirm that the correct bell was being used.
As far as the questions....
1)I'll look up a part # ASAP
2)Nope. The 3-bolt must be used.
3)Yes.

Could you use a new high torque starter by changing/swapping nose pieces off of a 3 bolt??

I get a part # of 2264-653 for the flywheel. Also, I get a part # of 1935-810
for the bell housing. This number comes from a '63 parts book. The bell housing
was used from '62-'68 [the '61 has a different part#]. Hmmmmm
John

It's true that the part numbers changed from the pre '62 engines to the 62 - 67 poly engines. The earlier had a different pattern at the back of the engine than the later version. The earlier poly had a crankshaft with 8 bolts, while the newer (62 to 67) has a 6 bolt crankshaft.
The first letter on the serial number of my poly is an S 318... . As far as I know (thanks to Gary P.) my truck has a late poly with a 6 bolt crankshaft in it. Does anybody know the correct clutch disk size for my poly mated with a NP 420 manual gear box?
Thanks a lot in advance.

I believe all A and LA motors had an 11" clutch with the 420 and 435.

Thanks a lot for your answer. It could be a 11" clutch disk. But what's the spline count on a NP 420? In the documents from Detroit Iron is written, that the hub spline diameter is 1" (10 splines). When I look at Summits I only could find 11" clutch disks for 1"-23 spline shafts. I guess the hub diameter is the diameter of the input shaft of the gear box - right? Where do I get a clutch plate for a 1"-10 spline shaft?
I'll appreciate your answer very much. Thank you.

MowagW200 wrote:Thanks a lot for your answer. It could be a 11" clutch disk. But what's the spline count on a NP 420? In the documents from Detroit Iron is written, that the hub spline diameter is 1" (10 splines). When I look at Summits I only could find 11" clutch disks for 1"-23 spline shafts. I guess the hub diameter is the diameter of the input shaft of the gear box - right? Where do I get a clutch plate for a 1"-10 spline shaft?
I'll appreciate your answer very much. Thank you.

www.hrclutch.com
John

Thank you very much, Hobcobble. I gonna contact them soon.

New to sweptline
WILL np435 MATE UP TO A 2235714-1 BH

I think you should start a new thread for this question and give details of what you are doing? Np-435 comes in different configurations.
jim