RADIATOR HOLD DOWN
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Joined: May 2005
Posts: 56
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From: souderton,pa
Car: 85 Camaro Z28
Engine: 408 ci bbc
Transmission: 700r4
Axle/Gears: 10 bolt 4.11 ratio
RADIATOR HOLD DOWN
HEY GUYS IVE RUN INTO A PROBLEM FINDING A RADIATOR HOLD DOWN. THE RAD IS A TWO CORE ALUMINUM MADE BY SUMMIT RACING AND IS SUPPOSED TO BE A DIRECT FIT...... DIDNT EXACTLY WORK OUT THAT WAY THO... HAS ANYONE RUN IN TO THIS PROBLEM AND IF SO CAN I BUY ONE SOMEWHERE OR AM I GONNA HAVE TO MAKE ON OUT OF ALUMINUM OR SOMETHING ELSE. THANK YOU.
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Joined: Jul 2001
Posts: 444
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From: Walnut Creek, CA
Car: 1988 Camaro Sport Coupe Convertible
Engine: Your Momma
Transmission: I can go forwards and backwards
cut around the factory upper shroud with whatever (dykes, etc) until it clears the tanks and hammer out the lower shroud as well and test fit until snug.
If you do a search for my name I did a write up on how to install a northern radiator (similar or the same?) in a serp. belt system car.
If you do a search for my name I did a write up on how to install a northern radiator (similar or the same?) in a serp. belt system car.
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From: Chicago area
Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
I made my radiator supports very simple. I just used 1" X 1/4" aluminum. I cut it and bent it to fit. Here are some photos:
Thread Starter
Junior Member
Joined: May 2005
Posts: 56
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From: souderton,pa
Car: 85 Camaro Z28
Engine: 408 ci bbc
Transmission: 700r4
Axle/Gears: 10 bolt 4.11 ratio
Yea thats kinda what i got now only it doesent look as nice as yours b/c it was just gonna be temporary. I was also thinking about making a sheet of aluminum to go all the way across but yours looks nice so i think ill just go with that. Thanks.
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Joined: Sep 2006
Posts: 747
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From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
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From: Palos Hills, IL USA
Car: 1992 25th Anniversary Z28
Engine: 6.3L - 383
Transmission: 700R4; Vig 3200
I just bought a sheet of brushed aluminum, a cheapie break, and some Kett shears and made this shroud. I spent maybe a few hours on it taking my time and I had to incorporate my Spal fans into the mounting too. I took alot of measurements...and made sure to measure two and three times before I made any cuts. I plan to polish the aluminum at some point along with some other pieces in the the bay.
- Joel
- Joel
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Joined: Aug 2006
Posts: 12,804
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
i just had to cut a piece off the driveside to allow the upper support to sit on the radiator and it was done.... works great. took 5 minutes
Thread Starter
Junior Member
Joined: May 2005
Posts: 56
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From: souderton,pa
Car: 85 Camaro Z28
Engine: 408 ci bbc
Transmission: 700r4
Axle/Gears: 10 bolt 4.11 ratio
I just bought a sheet of brushed aluminum, a cheapie break, and some Kett shears and made this shroud. I spent maybe a few hours on it taking my time and I had to incorporate my Spal fans into the mounting too. I took alot of measurements...and made sure to measure two and three times before I made any cuts. I plan to polish the aluminum at some point along with some other pieces in the the bay.
- Joel

- Joel

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From: Palos Hills, IL USA
Car: 1992 25th Anniversary Z28
Engine: 6.3L - 383
Transmission: 700R4; Vig 3200
I just bought a cheap aluminum break off ebay..it was maybe like $40 bucks or so. It did the job.
- Joel
- Joel
Joined: Sep 1999
Posts: 4,353
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From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
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From: ky
Car: 1992 Camaro ZO3
Engine: 350 HSR
Transmission: 700R4
Axle/Gears: 9 bolt/3.70's
I took some measurements and made a template out of cardboard. I took it to a local fab shop were the guy had the stainless left over from another job and fabbed it up for me for free. They aren't too difficult to make if you have the equipment.
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From: Tulsa, OK
Car: 1986 T/A
Engine: 350 bored .040, s/r torquer heads
Transmission: 700r4, tci shift kit
Axle/Gears: stock borg warner
What angle did they bend it at to be able to match to the bumper... support... thingy... side? .... god i hate brain farts... especially day long ones...
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From: ky
Car: 1992 Camaro ZO3
Engine: 350 HSR
Transmission: 700R4
Axle/Gears: 9 bolt/3.70's
I'm not sure of the angle. I just cut the pattern out of a piece of cardboard and he bent it to match. Stand the cardboard on edge on top of the radiator and bumper...support...thingy...side and keeping cutting it out til it matches the angle you need.
Junior Member
Joined: Mar 2007
Posts: 42
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From: Detwat, MI
Car: 84 Camaro
Engine: 400sb
Transmission: built 700r4
Axle/Gears: 3.73
Re: RADIATOR HOLD DOWN
yea man that is really nice i would buy one also i was gonna make my own but it probaly wont turn out that good..
Re: RADIATOR HOLD DOWN
I needed a custom setup to fit my larger aluminum rad and dual fan assembly so I made up a cardboard template and took it to a local HVAC shop and they bent it up for me. Used a punch flange that I bought off the net to add some unique style and then had it powder coated.
Member
Joined: Jun 2006
Posts: 130
Likes: 0
Car: 91 RS
Engine: L03 carbed
Transmission: 700R4, rebuilt+kit
Axle/Gears: 3.42, posi, disc
Re: RADIATOR HOLD DOWN
Mine is not as pretty as some, but it gets the job done:

I used that because I had the bright idea of putting in an electric fan from a Volvo. (Which actually worked shockingly well.) It fits fine and it's cheap: http://store.summitracing.com/partde...5&autoview=sku
Although I wonder if this one might fit even better: http://store.summitracing.com/partde...5&autoview=sku
I used that because I had the bright idea of putting in an electric fan from a Volvo. (Which actually worked shockingly well.) It fits fine and it's cheap: http://store.summitracing.com/partde...5&autoview=sku
Although I wonder if this one might fit even better: http://store.summitracing.com/partde...5&autoview=sku
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Re: RADIATOR HOLD DOWN
Im in the process of mocking a 1 piece like this up.
I plan to make it out of stainless and polish it.
http://www.cecoatings.com/images/Car...kup/Turbo1.jpg
I plan to make it out of stainless and polish it.
http://www.cecoatings.com/images/Car...kup/Turbo1.jpg
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From: WINDSOR, CO
Car: 91 Z28, 87 SC, 90 IROC, 92 RS
Engine: LS1, 305 TPI, L98, NADA
Transmission: T56, 700r4's, and NADA
Axle/Gears: 3.89, 3.42, 3.23, NADA
Re: RADIATOR HOLD DOWN
I needed a custom setup to fit my larger aluminum rad and dual fan assembly so I made up a cardboard template and took it to a local HVAC shop and they bent it up for me. Used a punch flange that I bought off the net to add some unique style and then had it powder coated.
Re: RADIATOR HOLD DOWN
Thanks for the interest. The manifold is actually custom made from a Holley Pro Dominator tunnel ram base and custom plenum, rails, etc. that we setup. The lid was milled out and a carbon fibre insert was added. Same for the valve covers.
I have more pics of the car if you are interested. Still finishing it up.
I have more pics of the car if you are interested. Still finishing it up.
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iTrader: (11)
Joined: Mar 2006
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From: WINDSOR, CO
Car: 91 Z28, 87 SC, 90 IROC, 92 RS
Engine: LS1, 305 TPI, L98, NADA
Transmission: T56, 700r4's, and NADA
Axle/Gears: 3.89, 3.42, 3.23, NADA
Re: RADIATOR HOLD DOWN
Thanks for the interest. The manifold is actually custom made from a Holley Pro Dominator tunnel ram base and custom plenum, rails, etc. that we setup. The lid was milled out and a carbon fibre insert was added. Same for the valve covers.
I have more pics of the car if you are interested. Still finishing it up.
I have more pics of the car if you are interested. Still finishing it up.
YES!!!! I would love to see some more pictures of the car. From what I can see from the couple pics posted above it looks like a really high quality, high end type of build, I love that.... Gives me a place to set my goals for.
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Joined: Apr 2006
Posts: 70
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From: columbus, ohio
Car: 1991 pro street formula
Engine: 355
Transmission: turbo 350 w/ 3200 stall
Axle/Gears: 9" ford detroit locker w/ 456
Re: RADIATOR HOLD DOWN
same idea as alot of others. took scrap piece of alum to roofing company. for 5 bucks and three minutes they put two bends in it. used cardboard template and cut it then polished (still have more polishing to do).
Junior Member
Joined: Apr 2006
Posts: 70
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From: columbus, ohio
Car: 1991 pro street formula
Engine: 355
Transmission: turbo 350 w/ 3200 stall
Axle/Gears: 9" ford detroit locker w/ 456
Re: RADIATOR HOLD DOWN
i ordered it from summit racing. the price on the web was alot cheaper than the catalog price as well. it was listed under universal shroud,fan kits.
Joined: Jun 2001
Posts: 8,028
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From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Re: RADIATOR HOLD DOWN
I needed a custom setup to fit my larger aluminum rad and dual fan assembly so I made up a cardboard template and took it to a local HVAC shop and they bent it up for me. Used a punch flange that I bought off the net to add some unique style and then had it powder coated.
Senior Member

Joined: Jan 2006
Posts: 726
Likes: 1
From: League City, TX
Car: 90 Formula -- tot resto in progress
Engine: 350
Transmission: 700R4 w/ 2500 stall, by Owen @ ARD
Axle/Gears: 3.23 posi disc
Re: RADIATOR HOLD DOWN
fastcar06: Are the fans the original TPI dual units, and can
you tell how much of a difference the shroud makes? (Some
on the board argue that it makes a significant difference...)
you tell how much of a difference the shroud makes? (Some
on the board argue that it makes a significant difference...)
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From: Palos Hills, IL USA
Car: 1992 25th Anniversary Z28
Engine: 6.3L - 383
Transmission: 700R4; Vig 3200
Re: RADIATOR HOLD DOWN
Thanks
I'm sure you could make one yourself..that was my first attempt working with sheet metal and with a decent break and some shears you're set. If I had the time and better (pro) equipment I'd make them for sale. Unfortunately there are too many different radiator configs too to produce one type of unit.
I'm sure you could make one yourself..that was my first attempt working with sheet metal and with a decent break and some shears you're set. If I had the time and better (pro) equipment I'd make them for sale. Unfortunately there are too many different radiator configs too to produce one type of unit. Junior Member
Joined: Apr 2006
Posts: 70
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From: columbus, ohio
Car: 1991 pro street formula
Engine: 355
Transmission: turbo 350 w/ 3200 stall
Axle/Gears: 9" ford detroit locker w/ 456
Re: RADIATOR HOLD DOWN
the fans came with the kit. both 10" from summit. the car has not been drivin yet so i'm not sure on thier effectiveness. one of the magazines did a test a while back and they came to the conclusion that two smaller fans shrouded are more effective than one larger unit (size matters) shrouded or not. that is what i based my decision on.
Senior Member

Joined: Jan 2006
Posts: 726
Likes: 1
From: League City, TX
Car: 90 Formula -- tot resto in progress
Engine: 350
Transmission: 700R4 w/ 2500 stall, by Owen @ ARD
Axle/Gears: 3.23 posi disc
Re: RADIATOR HOLD DOWN
Copy that fastcar, thanks for the info. 
Any recollection of what kind of larger fan(s) were used
for the comparisons? The current hi-perf set-up is the
Ford Taurus/Lincoln 2-speed unit, claiming ~4000 CFM,
which is more than most of the aftermarket single units.
(And there seems to be no shortage of these on e-bay
in the $50 - 80 dollar range.)
Any other thoughts, anyone?

Any recollection of what kind of larger fan(s) were used
for the comparisons? The current hi-perf set-up is the
Ford Taurus/Lincoln 2-speed unit, claiming ~4000 CFM,
which is more than most of the aftermarket single units.
(And there seems to be no shortage of these on e-bay
in the $50 - 80 dollar range.)
Any other thoughts, anyone?
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: RADIATOR HOLD DOWN
Mine is not as pretty as some, but it gets the job done:

I used that because I had the bright idea of putting in an electric fan from a Volvo. (Which actually worked shockingly well.) It fits fine and it's cheap: http://store.summitracing.com/partde...5&autoview=sku
Although I wonder if this one might fit even better: http://store.summitracing.com/partdetail.asp?autofilter=1&part=MOR%2D78736&N=700+115&autoview=sku
I used that because I had the bright idea of putting in an electric fan from a Volvo. (Which actually worked shockingly well.) It fits fine and it's cheap: http://store.summitracing.com/partde...5&autoview=sku
Although I wonder if this one might fit even better: http://store.summitracing.com/partdetail.asp?autofilter=1&part=MOR%2D78736&N=700+115&autoview=sku



That's not even CLOSE to fitting! I'm guessing you drilled some holes in the body to mount it, and used something on top of the rad?
Has anybody used an off the shelf support to hold their rad in place? I'm using the Taurus fan as well, and right now i'm using the mechanical fan shroud, but with the shroud part trimmed with an angle grinder.
I'd get that second one you mentioned, but it also doesn't list it as fitting a 3rd gen Camaro, so now i'm gunshy.
Anyone?
Member
Joined: Jun 2006
Posts: 130
Likes: 0
Car: 91 RS
Engine: L03 carbed
Transmission: 700R4, rebuilt+kit
Axle/Gears: 3.42, posi, disc
Re: RADIATOR HOLD DOWN
AHA!!! I bought that rad support for my car, thinking it would FIT! I did so based on YOUR post! 


That's not even CLOSE to fitting! I'm guessing you drilled some holes in the body to mount it, and used something on top of the rad?
Has anybody used an off the shelf support to hold their rad in place? I'm using the Taurus fan as well, and right now i'm using the mechanical fan shroud, but with the shroud part trimmed with an angle grinder.
I'd get that second one you mentioned, but it also doesn't list it as fitting a 3rd gen Camaro, so now i'm gunshy.
Anyone?



That's not even CLOSE to fitting! I'm guessing you drilled some holes in the body to mount it, and used something on top of the rad?
Has anybody used an off the shelf support to hold their rad in place? I'm using the Taurus fan as well, and right now i'm using the mechanical fan shroud, but with the shroud part trimmed with an angle grinder.
I'd get that second one you mentioned, but it also doesn't list it as fitting a 3rd gen Camaro, so now i'm gunshy.
Anyone?
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