Doug Cuthill wrote:
I have experienced the same problem as discussed here. what does the
list recommend as is the good, better, best replacement pump for 1970
442 455.
a while ago Paul Tumolo wrote:
> When I was running my engine on the dyno, it would have a serious lean
> out condition about 4500 RPM. The dyno guy ruled out the carb and
> float, so all fingers pointed toward the fuel pump. It couldn't
> be.....brand new AC Delco # 41567.
>
> I install the new engine in the car (with the same pump). Runs great,
> and has plenty of power to 4500 RPM and it falls flat on it's face.
> So, I figure that it is the pump, and go tot the auto parts store to
> get another one. When I tell the parts guy what I want, he looks it up
> on the computer. He lists a part number 40736 (Airtex # 40736)
> .....Hmmm, 442 only application. So, I buy it.
>
> When I compare it to the 41567, I am shocked! The diaphragm on the
> 40736 is about 3X bigger than the 41567.
>
> This large diaphragm pump looks to be the ticket for high performance
> use.
I (Cliff) recently purchased the NAPA Olds fuel pump with a return
line and found that the outlet points straight forward. My old pump's
outlet was at a 45 degree angle so I either have to try to find a more
correct pump or bend a new fuel line :(
I don't know if the Airtex # 40736 has the outlet pointing forward
or forward and up or if it has a return line so if you buy one then
please let us know.
Thanks,
--
Cliff "generic parts should only be used on generic cars" Simpson
http://www.ucalgary.ca/~csimpson/TheOldsZone.html
