Waterpump coolant bypass blockoff question
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Joined: Aug 2001
Posts: 1,770
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From: Pacific Northwest
Car: '85 IROC
Engine: LB9
Transmission: 700 R4
Waterpump coolant bypass blockoff question
In a number of publications that I've read over the years I've noticed that it's recommended to block off the lower hole in the block where the waterpump mounts on the pass side.
And it seems like that mod is supposed to be accompanied by drilling some bypass holes in the thermostat, IIRC.
But I've never seen an explanation for why it's done or what the benefits / disadvantages are.
Anyone care to comment on this?
Thanks
And it seems like that mod is supposed to be accompanied by drilling some bypass holes in the thermostat, IIRC.
But I've never seen an explanation for why it's done or what the benefits / disadvantages are.
Anyone care to comment on this?
Thanks
Joined: Dec 2000
Posts: 2,341
Likes: 151
From: Cincinnati,Ohio
Car: 1991 BandittII Firebird
Engine: 5.7 HSR
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
i've read a post or two about this on this board a few years ago but for the life of me i cannot remember the benefit was.do a 
and report back if you find anything.
Edit:Alittle info
and report back if you find anything.Edit:Alittle info
Last edited by 91banditt2; Oct 25, 2004 at 08:37 PM.
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