I had wondered the same thing, but bypassed it because the engine should be running hotter if it pumped backwards.
CK5
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One bank running hot vs other.
- Thread starter Ramba_ral
- Start date
I mentioned the cooling on this earlier being it's an L31, but I forgot to mention the reverse rotation water pump, you're right.
Do you have a serpentine belt system with the proper water pump is the question
This pump is clockwise.
This engine block needs reverse rotation.
As far as I know, reverse means counterclockwise
88926225 is the part number you need
Are you sure? Everything I've read is you need a clockwise rotation water pump if your running the old vbelts.
a example thread where it says it depends on what type of pulley system your using.
heres one from this forum
ck5.com
a example thread where it says it depends on what type of pulley system your using.
vortec heads - Third Generation F-Body Message Boards
Tech / General Engine - vortec heads - if i were to run L31's would i have to go with reverse flow cooling, i thought all vortec's u had to have a bassakwards water pump, do they make a electric reverse flow water pump?
www.thirdgen.org
heres one from this forum
Reverse rotation water pump for a 96 350?
Hey fellas- Wondering if someone can give me the low down on this reverse rotation water pump deal for a 1996 350 Vortec. What application do I buy for when I go to the parts store? I am taking the 96 block and heads, and putting all the junk off my stock 89 350 from the Burb back onto the...
ck5.com
belt style specific not block .
and if water pump has bosses for p/s pump bracket 98% of the time it should be v-belt . . . serp belt has no bosses on the pump as brackets bolt to block only . .
that hose loop is not the best . air pocket can get trapped up there .
here is how i did it . napa 7296 hose molded . but i am using serp belt drive 88-95 and pump .
Yes with those v belts it needs clockwise.
Do you have a heater? How are heater hoses routed?
Do you have a heater? How are heater hoses routed?
squeeze the hose closed at the water pump to intake. leave the heater valve open. See what the temps do.
Ill try this. just got to get some different fittings to shorten the hose
tried no bypass at intake to pump on my L31 and did not work .
if a L31 vortec 96-03 block there is no bypass port in the block for the water pump to feed from and this is why we need to do this and factory had that funky tubed water pump and intake to do it .
Not sure where a by pass in a gen 1 block would be. Traditionally the heater was the by pass intake top right out, rad or water pump in.
1 side of water pump 3rd hole to block . then it went up to head surface .
i.r. temp gun fire up dead cold watch each exhaust port temp . . note temps and report back .
i found a bad carb years ago this way 1/2 was half clogged up . . also found a bad injector not firing on a efi motor .
i found a bad carb years ago this way 1/2 was half clogged up . . also found a bad injector not firing on a efi motor .
