Beal

Hi: Just bought a 1992 coupe that had a bad top tee radiator hose fitting. I purchased a 1996 top hose and am planning to the throttle body bypass. How do you plump the hoses. I am not sure how to plumb the heater hoses, the passenger side of the throttle body goes to the heater core and then back to the surge tank. I can't locate a good picture of how a 95-96 routed all their hoses. Thanks for all that responded. Bill

Beal

I have been researching this for several hours and I think I have the answer. The water pump on a 92 is different than on a 93 to 96 (see pics) My pump does not have the port low and front on passenger side. Can anyone verify this is a return port for heater coolant?

1992

1993 to 1996

ColaBear

Left picture for 92, right picture is for 93-96.

ColaBear

The 95 - 96 have a different hose layout than the earlier year LT1's.

Here is my 96 from the drivers side and the passengers side. You have a 92 so yours will be different.

belairbrian

This might help it's the cooling diagram for 93-94 95-96 the hoses are different but water pump is the same. Our 82's have the tee in the upper radiator hose.
So you would need to change water pumps or replace your tee fitting and use a 5/8" Hose ID x 1/2" Hose ID barb fitting to bypass the TB. The core to TB and TB to upper hose runs are different diameters so you can't just go to core to tee.

belairbrian

Here is the 95-96 hose layout for anyone interested

belairbrian

BTW I went thru this 2 years ago. That's when I dug up those pictures.
The original tee is NLA (10157956) but you can buy an aftermarket replacement from davie's corvette maybe other places as well. The barb fittings can be found on Amazon. I bought a bag of them, but gave the spares away to other 92 owners