Radiator Question
Joined: Oct 2001
Posts: 12,216
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Aluminum core and plastic tanks. I don't know what year they started but mine has it..its a 89
Supreme Member
Joined: Oct 2002
Posts: 1,330
Likes: 0
From: MN
Car: 1989 Formy droptop/88 Deville
Engine: L98 350 TPI
Transmission: factory RWD, WS6 susp
I'm hi-jacking this with a needed question as well..
I got a used '88 Camaro radiator, finally arrived via eBay and I'm not sure about an odd item on the right top side... a metal pin goes through the middle vents, looking like it might induce a leak. A wire attached to a screw in black plastic box...
labelled: 70085, it has 5 male pins and the bottom in black plastic states; MPC 2286 IIRC
The unit also has a variable flush adjust for micro screwdriver but too small to makeout. I assume this is a temp control to the dash or ECM?
I also am not sure this one may be aftermarket listing the name "Modine". I'm not up on aftermarket of if AC Delco does the OEMs, but assist on this ASAP is requested. I own a 1989 Formula with the 5.7 TPI
The previous car was an 88 with 305 V8 and auto trans.
Hopefully I got all the vitals correct there. Is this aluminum? It's quite light
BILL S.
I got a used '88 Camaro radiator, finally arrived via eBay and I'm not sure about an odd item on the right top side... a metal pin goes through the middle vents, looking like it might induce a leak. A wire attached to a screw in black plastic box...
labelled: 70085, it has 5 male pins and the bottom in black plastic states; MPC 2286 IIRC
The unit also has a variable flush adjust for micro screwdriver but too small to makeout. I assume this is a temp control to the dash or ECM?
I also am not sure this one may be aftermarket listing the name "Modine". I'm not up on aftermarket of if AC Delco does the OEMs, but assist on this ASAP is requested. I own a 1989 Formula with the 5.7 TPI
The previous car was an 88 with 305 V8 and auto trans.
Hopefully I got all the vitals correct there. Is this aluminum? It's quite light
BILL S.
Joined: Oct 2001
Posts: 12,216
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Prolly a fan temp switch from autozone or some place like that..
Tanks shoud be black plastic and the core will be well, aluminum colored ...
I have my factory aluminum rad in my car 228,000 miles ....
Tanks shoud be black plastic and the core will be well, aluminum colored ...
I have my factory aluminum rad in my car 228,000 miles ....
Trending Topics
Supreme Member
Joined: Oct 2002
Posts: 1,330
Likes: 0
From: MN
Car: 1989 Formy droptop/88 Deville
Engine: L98 350 TPI
Transmission: factory RWD, WS6 susp
I figured it may well be a sensor for temp, but it goes thru the radiator cooling fins and it does move by hand. I may have a different fan, but according to owners manual '89 both V8 small blocks have dual fans and mine obviously does. I may need to rig my fan if it still doesn't start up. While the old one was leaking and I ran it, the fan didn't comeone and it overheated more then once.
Also, touching on one other aspect... The manifold has something akin to a birds nest under the rear of the plenum....it looks like wool and I can't imagine the purpose or how long it's been there but it worries me as a main source of heat is that close proximity to heated air and the cylinders... Is there ever any reason for insulation in that area??? It's just ahead of the distributer and I can't seem to fish it out either!
Bill
Also, touching on one other aspect... The manifold has something akin to a birds nest under the rear of the plenum....it looks like wool and I can't imagine the purpose or how long it's been there but it worries me as a main source of heat is that close proximity to heated air and the cylinders... Is there ever any reason for insulation in that area??? It's just ahead of the distributer and I can't seem to fish it out either!
Bill
Senior Member
Joined: Mar 2003
Posts: 966
Likes: 2
From: NE Ohio
Car: 83 Z28
Engine: 305 (LG4)
Transmission: THM700R4
Axle/Gears: 10 bolt, 3.23 non-LS
Thirdgen radiators have a common problem where the black plastic tank cracks where the top radiator hose is connected. The crack actually appears on the front side to the radiator directly in front of the top hose inlet. I was told that the significant temp change to that location when the thermostat opens causes the plastic to crack. I thought that puting a couple 1/8 inch holes in the thermostat would make that area warm up more gradually.
my 2 cents,
my 2 cents,
Supreme Member
Joined: Oct 2002
Posts: 1,330
Likes: 0
From: MN
Car: 1989 Formy droptop/88 Deville
Engine: L98 350 TPI
Transmission: factory RWD, WS6 susp
My problem is the filler cap area on the passenger side, facing the engine...it leaks all the way down so can't tell how big/bad it is but it loses most to all fluid so I suspect it's not a small one
Bill
Bill
Thread
Thread Starter
Forum
Replies
Last Post
eightsixseven
Tech / General Engine
2
Dec 16, 2024 01:50 PM
1992 Trans Am
History / Originality
27
May 10, 2023 07:19 PM










