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| | | | Joined: Jun 2008 Posts: 1,644 'Bolter | | 'Bolter Joined: Jun 2008 Posts: 1,644 | If you have, or are looking for, a 235 motor that has the water pump in the “high” position, can someone tell me the distance the top of the water pump would be from the thermostat housing? Seems that would be an easy way to tell if the motor would be a good candidate for a transplant into a 47-53 truck. A picture would be nice too. Thanks
Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod
| | | | | Joined: Jan 2013 Posts: 2,234 Moderator: Interiors, Texas Bolters, Name that Part | | Moderator: Interiors, Texas Bolters, Name that Part Joined: Jan 2013 Posts: 2,234 | I believe it’s like 3-4”. We can measure it using the plate and pump I have for you. Someone might be able to give you exact specs.
Can’t wait to see your truck back on the road!
Chris
Edit: pump is 3-4” higher. Not sure the actual distance between pump and thermostat housing.
Last edited by ndkid275; 03/15/2022 3:19 AM.
| | | | | Joined: Jun 2008 Posts: 1,644 'Bolter | | 'Bolter Joined: Jun 2008 Posts: 1,644 | I’m going to measure the distance over the weekend and will report it here.
Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod
| | | | | Joined: Feb 2004 Posts: 29,798 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,798 | The shape of the entire front of the block is different. Ray Charles could tell the difference in an early and a late model engine.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jun 2008 Posts: 1,644 'Bolter | | 'Bolter Joined: Jun 2008 Posts: 1,644 | Then I guess I’m not as smart as Ray Charles. I do like a good challenge though!
Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod
| | | | | Joined: May 2015 Posts: 11,067 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,067 | The shape of the entire front of the block is different. Ray Charles could tell the difference in an early and a late model engine.
Jerry Ray may be able to tell the difference, but we can't without photos. Do you have both types of blocks in your collection that you could post side-by-side pics of?
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Sep 2011 Posts: 1,455 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 1,455 | Early engines have 2 smaller holes at the front of the block that the pump & cover plate bolt to high mount pump. Later engines ('55 , 55.1 & up) have one larger hole at the front of the block, the pump mount into with 4 bolts to the block.
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: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Another quick way to tell is, the high mount water pump shaft is at the same level as the head gasket. The low mount pump shaft is about 3” lower than the head gasket.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Jun 2008 Posts: 1,644 'Bolter | | 'Bolter Joined: Jun 2008 Posts: 1,644 | Okay, as promised I measured the distance between the top of the water pump housing and the bottom of the thermostat housing and it was between 7/16” - 9/16”. Basically 1/2” gap between the two points. Pre ‘68 Dave’s comment is spot on…… the shaft of the water pump is exactly in line with the head gasket. Now I know all I have to do is look at the water pump shaft to tell if the pump is high or low.
Thanks
Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod
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