[DeTomaso] Techno question: Cleveland oil pump

jderyke at aol.com jderyke at aol.com
Wed Oct 4 04:07:55 EDT 2017


When I was looking for a lightweight oil pump for my Fontana block many years ago, I borrowed pumps from a Ford 302, a 351-W, a 390/427 FE and a 460. The gearotors all were the same diameter but the thickness was greatest in the 351-C. The pump body was large & heavy since Clevelands only got cast iron pumps & as usual I wanted to lose some weight. So I put a Cleveland gearotor set in a std die-cast aluminum 351-W pump, which required a thick machined spacer-cap. The 460 pump was smaller & shorter. That's why I said the Cleveland pump was quite a bit larger than any other Ford gearotor oil pump. Haven't measured flow in gallons/minute but a taller rotor & impeller running at the same speed into the same size oil passages pretty much has to yield more oil flow. I first did this trick to my poor little Corvair 6 in the previous century: that thing ran 270,000 really hard miles with taller 327 Chev V8 pump gears adapted.
Cheers- J DeRyke

-----Original Message-----
From: Charles Engles <cengles at cox.net>
To: detomaso <detomaso at server.detomasolist.com>
Sent: Tue, Oct 3, 2017 5:01 pm
Subject: [DeTomaso] Techno question: Cleveland oil pump


Dear Forum,



I found this in an old archived email from 2004:


"The extra-large Cleveland oil pump requires a great
amount of torque to turn. The Cleveland pump is the largest of any
small block engine. "


In my amateur engine building, I have never run across
any reference such as that.


Does anyone know if it *is* the largest oil pump of
any small block engine?


Does anyone know *how much* torque is required to turn
the average Cleveland pump with average weight oil???


Curious, Chuck Engles
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-------------- next part --------------
   When I was looking for a lightweight oil pump for my Fontana block many
   years ago, I borrowed pumps from a Ford 302, a 351-W, a 390/427 FE and
   a 460. The gearotors all were the same diameter but the thickness was
   greatest in the 351-C. The pump body was large & heavy since Clevelands
   only got cast iron pumps & as usual I wanted to lose some weight. So I
   put a Cleveland gearotor set in a std die-cast aluminum 351-W pump,
   which required a thick machined spacer-cap. The 460 pump was smaller &
   shorter. That's why I said the Cleveland pump was quite a bit larger
   than any other Ford gearotor oil pump. Haven't measured flow in
   gallons/minute but a taller rotor & impeller running at the same speed
   into the same size oil passages pretty much has to yield more oil flow.
   I first did this trick to my poor little Corvair 6 in the previous
   century: that thing ran 270,000 really hard miles with taller 327 Chev
   V8 pump gears adapted.
   Cheers- J DeRyke
   -----Original Message-----
   From: Charles Engles <cengles at cox.net>
   To: detomaso <detomaso at server.detomasolist.com>
   Sent: Tue, Oct 3, 2017 5:01 pm
   Subject: [DeTomaso] Techno question: Cleveland oil pump
   Dear Forum,
   I found this in an old archived email from 2004:
   "The extra-large Cleveland oil pump requires a great
   amount of torque to turn. The Cleveland pump is the largest of any
   small block engine. "
   In my amateur engine building, I have never run across
   any reference such as that.
   Does anyone know if it *is* the largest oil pump of
   any small block engine?
   Does anyone know *how much* torque is required to turn
   the average Cleveland pump with average weight oil???
   Curious, Chuck Engles
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
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   use the links above.
   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

References

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