Radiator
Thread Starter
Junior Member
Joined: Jun 2017
Posts: 22
Likes: 0
From: Middleburg, Virginia
Car: 1987 Firebird Trans Am
Transmission: 700R4
Radiator
Im looking to replace my stock radiator with an all aluminum radiator. I've been looking on some sites like summit racing and the ones I would be interested in are priced at $300 for just the radiator for all aluminum. I have a 1987 Trans am 305 Carb. I'm looking for something with medium HP range but I also want the option of having more power in future, nothing too big just some small upgrades but that much later in future. I found some on ebay priced under $200 for aluminum radiator and fans included. Not sure what the huge drop in price is for. What would be a good set of radiators for me. I want to have power but i'm looking for power for personal use (no racing or anything like that).
Heres the link to the one I found on ebay, if someone knows anything about it please reply because it seems good and cheap. Also other radiators that are good please direct me to them.
http://www.ebay.com/itm/3-ROW-ALUMIN...FYt6Tj&vxp=mtr
Heres the link to the one I found on ebay, if someone knows anything about it please reply because it seems good and cheap. Also other radiators that are good please direct me to them.
http://www.ebay.com/itm/3-ROW-ALUMIN...FYt6Tj&vxp=mtr
Joined: Aug 2015
Posts: 196
Likes: 11
From: Salt Lake City. UT
Car: '92 RS
Engine: 5.0TBI
Transmission: TKX
Axle/Gears: 2.73
Re: Radiator
If the skilled aforementioned slave is good the rad could still be good but, there is no sweatshop that can provide a reliable fan for that money.
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Radiator
Your best bet really is a stock radiator. I bet that radiator is the same radiator that's in the pages long aluminum 3 row "stock size" radiator. Bottom line is it isn't stock size, slightly larger. The first one I bought developed a pinhole leak that couldn't be repaired. Bought another and it's been fine so far. The thread shows that quality is hit or miss since most likely there is no qc. A 30 day return policy is their qc program.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: Radiator
A stock Radiator with the proper shrouded fan, a 180* thermostat and fan switch that comes on in the 180* to 190* range is what I prefer and should be good into the 300 to 350 HP range or higher for a primarily street driven car.
Its the shrouded fan, fans "on" switch temp and thermostat that will make all the difference.
With out those set correctly the size of radiator will not matter.
I have that exact set up using a Murray Radiator from O'Reillys Auto parts store and it has a Limited Lifetime Warranty.
That means for as long as I own the car replacements are free.
The first one lasted about 6 years until I over tightened the drain valve stripping it out. My fault.
No hassle,they just gave me a new one.
O'Reillys = https://www.oreillyauto.com/detail/m...camaro?q=RADIA
Its the shrouded fan, fans "on" switch temp and thermostat that will make all the difference.
With out those set correctly the size of radiator will not matter.
I have that exact set up using a Murray Radiator from O'Reillys Auto parts store and it has a Limited Lifetime Warranty.
That means for as long as I own the car replacements are free.
The first one lasted about 6 years until I over tightened the drain valve stripping it out. My fault.
No hassle,they just gave me a new one.
O'Reillys = https://www.oreillyauto.com/detail/m...camaro?q=RADIA
Last edited by Ron U.S.M.C.; Jul 18, 2017 at 10:01 PM.
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Member
Joined: Oct 2008
Posts: 153
Likes: 0
From: New Haven, CT
Car: 1983 Trans Am
Engine: 305
Transmission: Auto
Axle/Gears: Stock
Re: Radiator
I`m in the same situation need a new radiator, I heard nothing but negative issues
on aftermarket radiators. Probably going with a stock one.
on aftermarket radiators. Probably going with a stock one.
Joined: Nov 2000
Posts: 1,420
Likes: 5
From: Byhalia MS, just south of memphis
Car: 89 Firebird
Engine: 6.0 LS
Transmission: T-56
Axle/Gears: 3.70
Re: Radiator
i have a very healthy 383 and a stock style brass rad. my fan switch is on @185 and off @ 170 something, stock dual fans and a 180 stat, car runs right around the 185-90 area even on hot days.
i agree with Tibo and Midias.
i agree with Tibo and Midias.
Supreme Member




Joined: Oct 2004
Posts: 4,528
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Radiator
There's there's a long Thread about them on the board try the search function
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Radiator
Like Ron mentioned, buy a lifetime warranty and swap it out if they crack or leak.
Joined: Aug 2013
Posts: 4,840
Likes: 922
From: MICHIGAN
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Radiator
Yes, that's a common failure point. But if that's the factory radiator, that's a pretty excellent service life. Mine still has it's date coded original. 29 years old. How long should I expect a radiator to last? I won't be cussing mine when it finally fails.
I had the brass one in my first car soldered up twice when I was in school. That cars was only 13 years old.
I had the brass one in my first car soldered up twice when I was in school. That cars was only 13 years old.
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 10
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: Radiator
I think lowering the operating temperature of the car makes anything in the bay,etc. last a little longer. Taking a new stock replacement Radiator (plastic ends) and subjecting it to our car stock running temp. of 220* and higher is asking a lot.
That same Radiator in the 180*/200* range is going to extend its life considerably.
That same Radiator in the 180*/200* range is going to extend its life considerably.
Joined: Jun 2002
Posts: 722
Likes: 6
From: Ottawa, Ontario
Car: 86 IROC
Engine: LQ4 6.0L
Transmission: T56
Axle/Gears: 3.55 8.8
Re: Radiator
I have a Mishimoto and like it. Fit was tight, but got it in with no cutting other than some light trimming on the rubber isolators and the upper support plastic. No leaks, cools fine on a 2 fan 6.0L LQ4.
Joined: Feb 2001
Posts: 13,776
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Radiator
Which one do you have, the three core or two core? How much power do you think you are making with your LQ4?
Joined: Jun 2002
Posts: 722
Likes: 6
From: Ottawa, Ontario
Car: 86 IROC
Engine: LQ4 6.0L
Transmission: T56
Axle/Gears: 3.55 8.8
Re: Radiator
I have e the 3 core. I'm making around 400rwhp.
Post #6.
https://ls1tech.com/forums/conversio...-build-ac.html
Post #6.
https://ls1tech.com/forums/conversio...-build-ac.html







