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Re: 261 with 848 head
rgie #1394814 Fri Jan 29 2021 01:17 AM
Joined: Aug 2001
Posts: 1,227
G
'Bolter
There are many 261's out there that are the 54 style water pump design but with a later date code. Warren Foster explained that they were essentially "crate engines" to be a drop in replacement for 216's when they died in larger trucks.

Re: 261 with 848 head
rgie #1394817 Fri Jan 29 2021 01:46 AM
Joined: Sep 2001
Posts: 31,055
'Bolter
Thanks, Warren

A friendly and a helpful and a most knowledgeable man.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: 261 with 848 head
tclederman #1394884 Fri Jan 29 2021 03:48 PM
Joined: Oct 2014
Posts: 64
J
Wrench Fetcher
Ok so the Head casting# 3836848, Date code K 30 0, Block casting# 3769925, Date code Con 3 D 20 5 (the 5 could be a 9 it's hard to make out), Ser# F0404LB This engine also has a plate riveted to the block by an comercial engine builder so that may be the origin of the line being installed because there wasn't a hollow bolt in it when I got it. Sooo based on the date codes I don't need the line from the rear bearing or the bolt?

Last edited by John L.; Fri Jan 29 2021 06:36 PM.
Re: 261 with 848 head
rgie #1394915 Fri Jan 29 2021 07:11 PM
Joined: Dec 2017
Posts: 925
D
'Bolter
If pre 68 Dave is right, and I have no reason to think he is not, you will need to leave the line in place.


Mike
Re: 261 with 848 head
Greg_H #1394969 Sat Jan 30 2021 12:50 AM
Joined: Nov 2011
Posts: 11
J
New Guy
Yes I agree my block casting # is for a 1954/55 “3733950 with a copper line behind the side plate”. My head casting is “3836850” also for 54/55 but the actual casting date for both the block and head are from 1959 a replacement block. Since I am using a 848 head from 1962 I am Removing the rocker arm Assembly off the 3733950 54/55 head and bolting it on my 1962 848 head.

Re: 261 with 848 head
rgie #1394970 Sat Jan 30 2021 12:53 AM
Joined: Sep 2001
Posts: 31,055
'Bolter
I have seen 261 dated blocks reported/posted from 1954-1962 with the 3836850 casting code .


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
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