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#1533509 01/20/2024 5:18 PM
Joined: Oct 2016
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'Bolter
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261 with dual Carter/Weber setup.
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CCEDA64B-D6CA-4D49-BEC0-5F7A974506D6.jpeg (235.09 KB, 294 downloads)
C9AD74CD-8F72-4590-A3C9-5B4AF66E1C7A.jpeg (237.72 KB, 280 downloads)
847288D0-6B3E-4A1B-B3DE-22DF5E9A5BB5.jpeg (182.68 KB, 282 downloads)

Last edited by Norcal Dave; 01/20/2024 5:27 PM.

~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Feb 2004
Posts: 28,674
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
H Offline
Joined: Feb 2004
Posts: 28,674
All six of them? One's in the process of becoming a 300 with a 24 valve twin overhead cam cylinder head.
LOL!
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
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'Bolter
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Posts: 916
Yes, Jerry- all six!


~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Feb 2004
Posts: 28,674
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
H Offline
Joined: Feb 2004
Posts: 28,674
I've been scavenging up stovebolt sixes for several years. I have several of them in various stages of construction, but none are quite ready for a photo shoot. The 216's are going to be 258s, the 235s go to 270, and the 261s can be a few cubic inches +/- 300, depending on bore size. All of them will have 235 full pressure crankshafts, stroked to 4 5/16 inches. The 24 valve head will be a highly modified item from an Atlas 4.2L inline six. I'm also working on a "216" with roller valve lifters and roller rocker arms.
Jerry
Attachments
DSCF8534 (Copy).JPG (109.85 KB, 270 downloads)
DSCF8543 (Copy).JPG (105.44 KB, 270 downloads)


"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
N
'Bolter
'Bolter
N Offline
Joined: Oct 2016
Posts: 916
Very cool....looking forward to seeing that Atlas head!


~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Sep 2011
Posts: 1,363
B
'Bolter
'Bolter
B Offline
Joined: Sep 2011
Posts: 1,363
261 in my '60 C10
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IMG_20220307_184401715.jpg (250.22 KB, 245 downloads)
IMG_20220307_184346714.jpg (233.64 KB, 244 downloads)
IMG_20220307_184330402.jpg (214.8 KB, 244 downloads)


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
Joined: Jun 2003
Posts: 546
J
'Bolter
'Bolter
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Joined: Jun 2003
Posts: 546
What purpose does the horseshoe shaped item serve?


"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."

1957 GMC 150
Joined: Oct 2016
Posts: 916
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'Bolter
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Posts: 916
When you install a dual carb manifold, the fender stay/support rod on that side of the truck is no longer useable because the rod would now go right through the rear carb. A lot of people just remove the rod and drive the truck without it.

A better solution is to modify the rod with a horseshoe to either go up and over or around the side of the rear carb, so that the left fender rod can still do its job.

I used an old disc brake- I plasma cut the center and one edge out of it, welded it onto the fender rod, then cut the fender rod between the welds that I made, and had a pretty sturdy modified rod after that.

Last edited by Peggy M; 01/21/2024 6:30 PM.

~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Oct 2016
Posts: 916
N
'Bolter
'Bolter
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Joined: Oct 2016
Posts: 916
Originally Posted by BC59
261 in my '60 C10

Love the Detroit diesel green!
Attachments
C7232AA4-4A00-41F2-9B51-3746769A7100.jpeg (249.43 KB, 188 downloads)


~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Sep 2011
Posts: 1,363
B
'Bolter
'Bolter
B Offline
Joined: Sep 2011
Posts: 1,363
Alpine Green


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
Joined: Oct 2016
Posts: 916
N
'Bolter
'Bolter
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Joined: Oct 2016
Posts: 916
darn, I’m a shade off᠁.! Those colors look so close. I think I remember trying to find Apline in a rattle can, and Detroit diesel green was the closest I could find. Thanks for reminding me that I painted it the wrong color- lol dang

Last edited by Peggy M; 01/21/2024 10:04 PM.

~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Dec 2017
Posts: 1,609
D
'Bolter
'Bolter
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Joined: Dec 2017
Posts: 1,609
Dual Holley 2300 350 cfm 2bbls on Clifford intake, Clifford long tube headers, venolia forged pop up pistons, 302 GMC rods, cut down 302 bearings, Schneider 284 mechanical cam and springs, smith brothers push rods and adjusters, Manley one piece street flow exhaust valves, 50-52 powerglide intake valves, slightly enlarged and blended valve bowls, three angle valve job, vertex magneto.

Pretty fun to drive.
Attachments
IMG_3425.jpeg (323.08 KB, 221 downloads)


Mike
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Posts: 916
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'Bolter
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Posts: 916
I'd like to hear that one run....nice build!

Last edited by Peggy M; 01/21/2024 10:03 PM.

~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Nov 1995
Posts: 5,470
Bond Villain
Bond Villain
Joined: Nov 1995
Posts: 5,470
We made a Tech Tip out of rebuilding mine -- John's 261

BTW -- Using the 216 valve cover was a mistake. It looks cool, but it has made quite a mess of the engine. I am in the process of returning to the 261 valve cover.
Attachments
DSC_0159.JPG (180.59 KB, 173 downloads)
John's 261


~ John

"We are not now that strength which in old days
Moved earth and heaven; that which we are, we are"

1948 International Farmall Super A
1949 Chevrolet 3804
In the Legacy Gallery | In the Gallery Forum
1973 IH 1310 Dump
2001 International/AmTran RE3000 "Skoolie"
2014 Ford E-350 4x4 (Quigley)
Joined: Feb 2004
Posts: 28,674
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Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
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John, I've got a project in mind that might solve the "leaky 216 valve cover" problem, but it's down the "things to do list" several places. It involves making a fairly simple adapter that should solve the leakage problem, but it involves some machining. Channeling Gomer Pyle- - - -"SURPRISE- - - -SURPRISE!"
LOL!
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: Nov 1995
Posts: 5,470
Bond Villain
Bond Villain
Joined: Nov 1995
Posts: 5,470
Thanks Jerry. I think I'd rather be surprised with a certain Zenith carburetor ...

wink


~ John

"We are not now that strength which in old days
Moved earth and heaven; that which we are, we are"

1948 International Farmall Super A
1949 Chevrolet 3804
In the Legacy Gallery | In the Gallery Forum
1973 IH 1310 Dump
2001 International/AmTran RE3000 "Skoolie"
2014 Ford E-350 4x4 (Quigley)
Joined: Oct 2016
Posts: 916
N
'Bolter
'Bolter
N Offline
Joined: Oct 2016
Posts: 916
Originally Posted by John Milliman
We made a Tech Tip out of rebuilding mine -- John's 261

BTW -- Using the 216 valve cover was a mistake. It looks cool, but it has made quite a mess of the engine. I am in the process of returning to the 261 valve cover.
That’s a nice write up on your 261 build.


~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission
Joined: Nov 1995
Posts: 5,470
Bond Villain
Bond Villain
Joined: Nov 1995
Posts: 5,470
Thanks Dave -- It was very much a group effort. And, of course, we couldn't have done it without Coach Jerry!

And man oh man, is THAT a sweet running engine!


~ John

"We are not now that strength which in old days
Moved earth and heaven; that which we are, we are"

1948 International Farmall Super A
1949 Chevrolet 3804
In the Legacy Gallery | In the Gallery Forum
1973 IH 1310 Dump
2001 International/AmTran RE3000 "Skoolie"
2014 Ford E-350 4x4 (Quigley)
Joined: Jan 2000
Posts: 731
S
'Bolter
'Bolter
S Offline
Joined: Jan 2000
Posts: 731
Really, really, really like those Offenhauser rocker covers. Can they be snugged down tighter than the stock 216 cover? Would assume they're more flat and true as well? Currently enjoying the non-leaking 4 bolt cover on my 235 but those Offenhausers sure look great. smile


Matthew 6:33

1952 Chevy 1/2-ton 3100
Late '55 235/SM420/torque tube 3.55
Dalton Highway survivor (using original 216)
www.truckwithaheart.com
Joined: Dec 2017
Posts: 1,609
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'Bolter
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Posts: 1,609
I bought my offy in 81 or 82, I forget now. You can’t gorilla them or you run the risk of damaging the casting. That being said, if the gasket is installed correctly, and the cover oriented to the gasket correctly, moderate tightening is really all that is necessary with the offy.


Mike
Joined: Sep 2011
Posts: 1,363
B
'Bolter
'Bolter
B Offline
Joined: Sep 2011
Posts: 1,363
Update on engine color on my 261.
Attachments
IMG_20240127_184537288.jpg (95.56 KB, 49 downloads)
IMG_20240127_184502959.jpg (130.59 KB, 49 downloads)


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022

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