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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2012 Posts: 307 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 307 | I've bought two different flywheel covers and neither one fits. The last one I got has the cutout for the bellhousing mounts but the rear tab won't clear the oil pan to seat. Is there a certain way it can only go on? A picture perhaps. 1960 261 3 speed. Any help is appreciated.
1958 Chevy Grumman Olson step van
| | | | | Joined: Dec 2002 Posts: 3,439 Moderator - The Electrical Bay | | Moderator - The Electrical Bay Joined: Dec 2002 Posts: 3,439 | Do you have a picture of an original?
Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
| | | | | Joined: Oct 2012 Posts: 307 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 307 | No, I wish I did so I know what to look for.
1958 Chevy Grumman Olson step van
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | I have had to trim a little metal off of them before.
George
Last edited by Wrenchbender Ret.; 12/01/2019 4:32 PM.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Sep 2006 Posts: 3,596 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 3,596 | | | | | | Joined: Dec 2002 Posts: 3,439 Moderator - The Electrical Bay | | Moderator - The Electrical Bay Joined: Dec 2002 Posts: 3,439 | Are the V-8 and IL-6 covers interchangeable?
Another quality post.
Real Trucks Rattle
HELP! The Paranoids are after me!
| | | | | Joined: Dec 2010 Posts: 97 'Bolter | | 'Bolter Joined: Dec 2010 Posts: 97 | Are the V-8 and IL-6 covers interchangeable? I'm not 100% sure but do not believe they interchange due to different bellhousings on 216/235/261 and the V8 and later sixes. A study of the later Master Parts List books might help in determining if the same part number carries across from 216/235/261 to later engines. I've also met similar looking pans with different (and incompatible) profiles on the joint line between upper and lower segments. | | | | | Joined: Oct 2012 Posts: 307 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 307 | I was surprised to find there were more than two kinds. The repops are often marketed as universal fit.
1958 Chevy Grumman Olson step van
| | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | It's been my experience that nothing from the V-8 engine (and 63 up 6 cylinder) and bellhousing will interchange with the 216/235/261 series engine/bellhousing. One exception would be some of the clutch release forks.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Nov 2011 Posts: 1,610 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,610 | There are early and late versions of the flywheel cover. The change occurs somewhere around when the 235 got insert bearings. | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Here is my list.
Chevrolet called them "underpans".
The front vertical part is called "extension".
This is a six cylinder list only.
Flywheel Under pan 0.679
1937-48 Passenger 839335
1949-62 Passenger 3688221
1937-53 truck 838438
1954-55 1st truck 3702830
1954-62 truck (1954-55 1st, w/HD clutch) 3725088
Extension
1937-39 Passenger 838484
1940-48 Passenger 839131
1949-54 Passenger 3688218
1955-62 Passenger 3836317
1937-39 truck 838483
1940-62 truck 839180
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Sep 2009 Posts: 296 'Bolter | | 'Bolter Joined: Sep 2009 Posts: 296 | Interesting, I need one for my late 50's 261 as well.
-Patrick
1953 Chevrolet 3100
261 / 4-speed / 4:11 / Commercial Red
| | | | | Joined: Sep 2011 Posts: 58 hmmm. | | hmmm. Joined: Sep 2011 Posts: 58 | It is a two piece I think. | | | | | Joined: Oct 2012 Posts: 307 'Bolter | | 'Bolter Joined: Oct 2012 Posts: 307 | The one I need has cutaways on each side and a crescent cutaway up front. I have a picture in truck parts wanted.
1958 Chevy Grumman Olson step van
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