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L98 oil cooler lines and gaskets

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Old 07-27-2017, 02:11 PM
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Car: 1991 Trans Am GTA
Engine: L98(5.7 L TPI)
Transmission: 700r4(A4)
Axle/Gears: G80 RPO, 3:23s, Auburn Racer's Diff
L98 oil cooler lines and gaskets

Ladies and gentlemen,

While my engine is out of my 1991 L98, I noticed the oil cooler lines were badly corroded. Thankfully Hawks sells aluminum replacements.

http://www.hawksmotorsports.com/oil-...tion-aluminum/

I ordered them this afternoon.

There are four short sections of rubber coolant lines that connect to these new aluminum lines. The GM part number for three of these lines is 12368236. The internet revealed these are "cut to fit." So, NAPA should be able to hook me up. The part number for the last piece of line is 10100194. Does anyone know if this is also cut to fit?

While the oil cooler lines are being replaced, it only makes sense to replace the rubber seal that attaches the oil cooler to the motor. The GM part number is 14087586. Unfortunately, that part is discontinued by GM. But, a search of the FelPro website revealed it is included in their ES 70687 kit.

Amazon Amazon

It looks like three gaskets are included in the kit. But, according to the following diagram, I only need one gasket (number 22 in the picture).

http://www.wholesalegmpartsonline.co...=0&modelYear=0

So, where do the other two FelPro gaskets go?

Thanks!
Bill
Old 07-27-2017, 02:55 PM
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Car: 1989 Pontiac Formula 350
Engine: L98
Transmission: 700R4
Axle/Gears: BorgWarner 3.27 Posi
Re: L98 oil cooler lines and gaskets

Don't believe you use the other 2 out of the kit.




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