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Jul 21st, 2025 | | | | Joined: Jan 2010 Posts: 210 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 210 | I saw new flywheels on Rockauto and Orielly's, Rockauto list them for 1954 261 engine. Do you know if that will fit on an 46 235? Is there a difference in the crank bolt pattern in the center. I saw one was 4 bolt, the other 6 bolt mounting to the crank. Basiclay I'm repacing my 9 bolt 10.75 inch clutch with an 11" but I need a different flywheel. I've asked around for a 139 tooth 6 bolt, 11" flywheel without success. I saw several new ones and want to ensure one will work before I purchase. Here is the link from Rockauto and Orielly's. Since the new ones are 168 tooth, I was going to go ahead and switch my starter to 12V since I'm already running that way. Thanks http://www.rockauto.com/en/moreinfo.php?pk=1384283&cc=1326484&jsn=8&jsn=8https://www.oreillyauto.com/detail/...eel/nfw1007/4672027/1954/chevrolet/truck
Last edited by Lend-Lease 1.5; 02/10/2018 1:56 PM.
| | | | | Joined: Jan 2001 Posts: 5,320 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,320 | 1942-62 used the same bolt pattern.
However both flywheels you linked to only have one line-up dowel.
The flywheel you need will have three dowel holes.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Jan 2010 Posts: 210 'Bolter | | 'Bolter Joined: Jan 2010 Posts: 210 | Thanks Dave,
Yes I see that now, | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Dowels aren't forever- - - -they can be removed and replaced with short plugs to prevent oil leaks. If the bolt pattern, flywheel diameter, and ring gear tooth count matches up the flywheel should bolt on and work, but you might have to make your own timing marks when you assemble the engine. That's a simple process of finding top dead center and using a degree wheel to locate where to put advance/retard markings on either the flywheel or the front pulley. Parts don't care where they're put, as long as the guy installing them is a little bit smarter than the part he's installing.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Oct 2016 Posts: 916 'Bolter | | 'Bolter Joined: Oct 2016 Posts: 916 | I bought that same flywheel for my 261. It was over a year ago but from what I can recall it turned out to be a V8 flywheel that also had the wrong ring gear teeth, and I think that the bolt pattern was also a different diameter...so their listing was not correct. So not just a dowel pin issue to deal with there. I have seen old aluminum flywheels on eBay every once in a while for the 235- I have always been curious what it would be like driving a truck with one of those (probably not to pleasant?).
~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
| | | | | Joined: Sep 2012 Posts: 306 'Bolter | | 'Bolter Joined: Sep 2012 Posts: 306 | ** lend-lease, I have the flywheel you are looking for. An orig. removed from a 1962 261. If interested send me a pm. ** I sent you a pm several days ago but it remains unread. | | |
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