Dumb thermostat question
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Racer
Joined: Sep 2001
Posts: 314
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From: Forest Hill MD
Dumb thermostat question
I bought a new thermostat for the vette and it did not come with a gasket. There is an o-ring on the thermostat, is this o-ring the only seal? Or do I need a gasket as well?
Thanks,
Jim :flag
Thanks,
Jim :flag
Melting Slicks
Joined: Apr 2002
Posts: 2,620
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From: 20 forward gears to shift through in MD
Re: Dumb thermostat question (jims_red_94LT1)
When you remove the t-stat housing you will see that the old t-stat resides in a "well" within the water pump housing. It may take a little priying on the old one to remove it (they tend to get stuck in there after a while). If prying on it, be very careful not to gouge or mark the aluminum on the mating surface. I have never had a problem with leaking after a t-stat swap so it must be a pretty good design.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Dumb thermostat question (jims_red_94LT1)
Another dumb question, is the new t-stat made for an LT1/4? It's different than the t-stats made for the classic Chevy small block. I've never seen an LT1/4 t-stat at my local parts stores. OTOH, every LT1/4 t-stat I've purchased has the o-ring already in place.
Eric
Eric
Melting Slicks
Joined: Apr 2002
Posts: 2,620
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From: 20 forward gears to shift through in MD
Re: Dumb thermostat question (silver & red CE)
I bought the Robert Shaw t-stat for my LT1 at AutoZone, it was the heavy duty "lifetime" warranty as well. The o-ring gasket was also purchased there (from the parts counter). The thermostat I bought did not seem significantly different from any other t-stat I have bought for other vehicles. Although, I will admit, that when I pulled the one that was in the car they physically looked different. The Robert Shaw worked fine though.
Drifting
Joined: May 1999
Posts: 1,478
Likes: 3
From: Sacramento, CA Money can't buy happiness - but it's more comfortable to cry in a Corvette than a Yugo.
Re: Dumb thermostat question (silver & red CE)
The LT1 thermostat is different. I got this info on vette thermostats directly from someone at Stant the OEM supplier to GM.
86-91 Corvette 5.7L VIN 8
Stant 13359
Valve diameter - 1.00"
Min. stroke @ full open - .310
90-95 Corvette 5.7L VIN J
Stant 14068
Valve diameter - 1.12"
Min. stroke @ full open - .320
92-96 Corvette 5.7L VIN P
Stant 14218
Valve diameter - 1.640"
Min. stroke @ full open - .320
Notice the LT1 valve diameter is 60% greater than that of the L98 and almost 50% bigger than that of the LT5.
86-91 Corvette 5.7L VIN 8
Stant 13359
Valve diameter - 1.00"
Min. stroke @ full open - .310
90-95 Corvette 5.7L VIN J
Stant 14068
Valve diameter - 1.12"
Min. stroke @ full open - .320
92-96 Corvette 5.7L VIN P
Stant 14218
Valve diameter - 1.640"
Min. stroke @ full open - .320
Notice the LT1 valve diameter is 60% greater than that of the L98 and almost 50% bigger than that of the LT5.
