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Joined: Sep 2017
Posts: 1
Grease Monkey
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OP
Grease Monkey
Joined: Sep 2017
Posts: 1 |
Hi everyone I am a new member. I have bought a 261 out of 55 Chevy pickup. The intake # is. 3695409 it seems to have a smaller carb base as a 235 (5140) stamped on bottom carb won't fit. I can't find that intake cast #. The cast # for the 1955 261 is 3837012 my question is what is this manifold from.
Last edited by Dwightshultz; 09/29/17 09:27 PM.
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
First my information is for a US engine/truck.
The small 1955 trucks like pick-ups all had a 235 engine. The large trucks, 2 ton, had a 261.
The 235 and 261 used the same intake and exhaust manifolds.
The carburetor stud spacing was the same for a 235 and 261, 2 15/16" center to center for studs/holes.
The 216 engine had a 2 11/16" spacing.(not made in 1955)
The throttle plate on a 235 was 1 1/2" and the 261 was 1/8" larger. The 216 was 1 7/16".
My first guess is the engine is a 235.
Gene Schneider
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Joined: Oct 2011
Posts: 337 Likes: 4
Backyard Mechanic
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Backyard Mechanic
Joined: Oct 2011
Posts: 337 Likes: 4 |
I no longer have any parts books but seem to recall that parts in the 369.... range were for the 1951-1952 era.
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
I agree with the above.
As an example the # for a Canadian 1951 235 cylinder head was 3695450.
Last edited by Chev Nut; 09/30/17 09:05 AM.
Gene Schneider
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