3rd hole in water pump???
08-04-2007, 04:56 PM
#1
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Car: 1991 Pontiac Firebird
Engine: 383 LT1
Transmission: built 700r4 and fuddle 3500stall
Axle/Gears: 4th gen 3.42 auburn
3rd hole in water pump???
on the waterpump there is an extra hole on the drivers side on the mounting flange under the bolt holes that actually goes into the pump... what is that for?
Last edited by gapimpin; 08-04-2007 at 05:06 PM.
08-04-2007, 05:45 PM
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: 3rd hole in water pump???
dont worry about it, its not used, probably for a brackets or something on a different model.
08-04-2007, 06:13 PM
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Car: 1991 Pontiac Firebird
Engine: 383 LT1
Transmission: built 700r4 and fuddle 3500stall
Axle/Gears: 4th gen 3.42 auburn
Re: 3rd hole in water pump???
well i heard it was for a bypass or something in the block but i have a 96 block that its not used on so i sealed it with metal filler... i just wanna make sure it wont mess up my pump.
08-05-2007, 04:25 AM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 3rd hole in water pump???
It's a bypass hole. Used with the correct gasket, it will seal against the block so there's no need to fill it.
08-05-2007, 06:07 AM
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Car: 1991 Pontiac Firebird
Engine: 383 LT1
Transmission: built 700r4 and fuddle 3500stall
Axle/Gears: 4th gen 3.42 auburn
Re: 3rd hole in water pump???
ehh i figure its just on less spot to worrie about leaks...
also i was wondering if there is a way to test a waterpump with it off the car to make sure all the seals are good?
its a flowkooler pump that was on an old project car and was taken off and has been sitting in a garage for probably 3yrs or so. it spins free but i wanna make sure the seals inside arent gonna leak.
also i was wondering if there is a way to test a waterpump with it off the car to make sure all the seals are good?
its a flowkooler pump that was on an old project car and was taken off and has been sitting in a garage for probably 3yrs or so. it spins free but i wanna make sure the seals inside arent gonna leak.
Last edited by gapimpin; 08-05-2007 at 08:40 AM.
08-05-2007, 11:30 AM
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Car: 1983 Monte Carlo SS
Engine: 305 w/ cam
Transmission: TH350
Axle/Gears: 3.42 w/ auburn lsd +moser 28 spline
Re: 3rd hole in water pump???
woops....posted a reply but i answered a diff question lol
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