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8 members (BC59, David Bush, MikeE, Bucker, MickeyP, Rexville48, dt235sd, Forty9),
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Global Mod,
Mod | | | Forums66 Topics128,049 Posts1,055,702 Members48,426 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2005 Posts: 124 6 heaven | | 6 heaven Joined: Aug 2005 Posts: 124 | Looking at an engine assembly with a LAQ25I84 stamped into the block pad and has 3701887 head casting number. Any idea what this unit is? 235 or 261 or a combination? Thanks! | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | 3701887 is a 12953 truck 235 head.
LAQ25I84
L = 1953
A = car 235 equipped with a Powerglide transmission
Q = Tonawanda, NY engine plant
12953-1000 = 11953rd engine out of that plant in 1953
It would have hydraulic lifters.
261s were introduced in 1954 (and, were only used in trucks). | | | | | Joined: Jan 2013 Posts: 1,518 'Bolter | | 'Bolter Joined: Jan 2013 Posts: 1,518 | Dont be fooled by the captains bars on the distributor side, but is a 235 not a 261 as Tim said.
That is a good little engine.
Last edited by sstock; 01/09/2020 4:37 PM.
1953 Chevrolet 3100261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done In the DITY GalleryVideo of the 261 running1964 GMC 1000305 Big Block V6, sm420, the next cab off restoration
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Thanks, sstock
I forgot how those bars in that year can cause confusion. | | | | | Joined: Aug 2005 Posts: 124 6 heaven | | 6 heaven Joined: Aug 2005 Posts: 124 | This was a takeout,and it had a closed driveline truck 4 speed behind it. I noticed that the 4 speed front bearing cover(where the to bearing slides to operate the clutch had 6 perimeter bolts,. I always thought that there were only 4 bolts holding this front retainer on. | | |
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