adding a coolant temp gauge (aftermarket)
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Junior Member
Joined: Aug 2007
Posts: 69
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From: Visalia Ca
Car: 86 IROC spts cpe conversion.
Engine: 89 L98 TPI since 2000.
Transmission: NOW A T-5 as of 3/19/08
Axle/Gears: 373s
adding a coolant temp gauge (aftermarket)
I changed my 305 4bbl to a 350 TPI. Everything works great. Passed emissions. Now the final things to do. Reconnect the oil pressure gauge and coolant temp gauge. I wouldn't mind hooking up the original but I have aftermarket gauges just in case. If someone can let me know where I can hook up the original connectors to the tpi motor, I would greatly appreciate it.
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iTrader: (5)
Joined: Dec 2006
Posts: 2,212
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From: Augusta, Ga
Car: 1987 Trans Am
Engine: 355ci L98 soon to be turbo'd
Transmission: 700R4
Axle/Gears: 2.73 posi
Re: adding a coolant temp gauge (aftermarket)
I'm sure someone can correct me if I'm wrong, but there should be a port right above the oil filter (on the block) for the oil pressure sender. And there ports for water temp are on the sides of the block, below the headers/manifolds.. I'm not 100% sure between what cylinders, though... If you do a search, you'll get exact answers...
Junior Member
Joined: Apr 2007
Posts: 73
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From: Abingdon, IL
Car: '89 IROC convertible
Engine: 355 TPI
Transmission: T-5
Axle/Gears: 3.45? Posi
Re: adding a coolant temp gauge (aftermarket)
On my '89 with a Tuned Port 305, the coolant temp sensor for the gauge is between 1 and 3 cylinder (driver's side between the front 2 cylinders) like HCR13 said.
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