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Re: Water pump for an L31?
Quote:
Originally Posted by garyd1961
If you have just a heater and no ac the heater can serve as the bypass.
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some get away with this some dont . . . mine did NOT like it .
and the intake the O.P. posted from edelbrock has the bypass port in the front just under the t-stat . its a 3/8" pipe thread . i used a 3/8" pipe to 5/8" hose barb fitting from these guys in the intake . https://www.ebay.com/itm/5-8-HOSE-BA...72.m2749.l2649
then a molded 45* hose from the local napa / carquest rack to the water pump port on top almost dead in line with the intake port . hooked them up and ZERO problems ever since then .
here is my thread on this problem and lots of people posted info and pics to back it up . and post #42 on 2nd page has my exact fix and hose part# . http://67-72chevytrucks.com/vboard/s...d.php?t=778518
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77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
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HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .
EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
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