| |
Click on image for the lowdown. 
====
|
| | Forums66 Topics128,049 Posts1,055,741 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!
|
| THANKS!
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: Dec 2007 Posts: 210 Shop Shark | | Shop Shark Joined: Dec 2007 Posts: 210 | I have a 1961 - 235 that I need a water pump for. I was ask if it is a singal bypass or a dual bypass. What is the differance and does it matter.? Am I missing a adaptor plate of some kind? My block has a hole about 3" in diameter where the water pump bolts. I have a water pump that I thought was for this engine and it will not bolt up,it is the same as the water pump on my 216 engine. What do I need? | | | | | Joined: Sep 2011 Posts: 1,453 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,453 | You need a 55 2nd design & later pump, no the same as your 216 or early 235. Unless you have another hose above the heater hose on the pump either 1 or 2 port will do, plug the unused fitting.
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: Dec 2007 Posts: 210 Shop Shark | | Shop Shark Joined: Dec 2007 Posts: 210 | You need a 55 2nd design & later pump, no the same as your 216 or early 235. Unless you have another hose above the heater hose on the pump either 1 or 2 port will do, plug the unused fitting. Thanks for you fast responds. I am putting this 235 in my 46 truck. I just read about a adaptor plate that can be used to use the old style pump in the stock position as the 216, is this nessasary for application ? I guess the pump shaft is shorter on the old style pump on the 216.
Last edited by metal shaper; 09/23/2016 6:19 PM.
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Not only is the pump shaft shorter, it is in a different location.
A newer block and water pump locates the fan higher relative to the earlier radiator - less efficient cooling results. | | | | | Joined: Sep 2011 Posts: 1,453 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,453 | ))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
I am putting this 235 in my 46 truck. I just read about a adaptor plate that can be used to use the old style pump in the stock position as the 216, is this nessasary for application ? I guess the pump shaft is shorter on the old style pump on the 216. [/quote]
________________________________________________________________________________________________________________________
That changes things a bit!
Old style pump w/ adapter plate the way to go.
Last edited by BC59; 09/23/2016 11:58 PM.
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: Dec 2007 Posts: 210 Shop Shark | | Shop Shark Joined: Dec 2007 Posts: 210 | Thanks for the info. I have a better understanding of what I need , and a plan to get it done. | | |
|
|
| |
