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| | | | Joined: Nov 2006 Posts: 63 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2006 Posts: 63 | hey all, I just looked through the tech tips section on engine identifing and am still lost, my head casting # is 3836848 then B55 848 I tried looking for the 261 "Captain marks" in front of the starter and all I can see is on the block about 4in. ahead of the starter are the raised letters "GM" so if anyone can help me that be great! -Thanks!
Last edited by ApacheManSlim60; 04/17/2008 11:06 PM.
Thanks,as always -Danny
1960 C-10 Stepside,Longbox
235,4spd 3.90 diff.
| | | | | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Well, you have a 235 head. My 261 also has captain's bars under the exhaust manifold on the block. If your engine has 1/2" NPT oil filter threads on the driver's side of the block, that is a dead giveaway that it is a 261.
I've never seen a 261 that didn't have captain's bars. There may have been a couple of 235's that had captain's bars, but I've never seen one that had them.
Last edited by 4ontheFloor; 04/18/2008 1:32 AM.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Jim Carter has a Tech Tip article on the "forgotten 261". The Captain's bars on the block are on all 261 engines and on the 1954/55-1st 235 engine. Tim | | | | | Joined: Nov 2006 Posts: 63 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2006 Posts: 63 | Well what do the "Captain's Bars" look like??
Thanks,as always -Danny
1960 C-10 Stepside,Longbox
235,4spd 3.90 diff.
| | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 | Tim,
Thanks for the great Tech Tip article on the 261. I've never seen a 261 and I was always curious what "Captain's Bars" looked like.
But be careful when comparing the casting numbers because one of the head numbers, listed as 3769925, is actually a block casting number, as shown in one of the pics.
-Tom
1950 Chevy 3100 w/ 1956 235
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Tom,
Good eyes. I'll have to check my 1960 261 to see what head casting number is on it.
The "Captain's Bars" are shown clearly at Jim Carter's Tech Tip link above.
Tim | | | | | Joined: Jan 2001 Posts: 1,424 ODSS President | | ODSS President Joined: Jan 2001 Posts: 1,424 | Here are captains bars. Look for two vertical, raised, parallel bars above the starter. They also apppear on the drivers (manifold side). I'll try to find a pic. Here's Geezer's 261, notice captain's bars, as above vertical, raised, parrallel, superior to and center of new brass plugs. Of course this is the manifold side. Notice too the half inch oil ports.
~ Cosmo
1949 Chevy Half Ton
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