Rad. sq. in. question

Archives of GM H-Body Club

Moderator: Moderators

Rad. sq. in. question

Postby h-bot » Thu Mar 14, 2002 3:41 pm

From: gaylar20022002_REMOVE_812532_THIS_@yahoo.com


Hi All. I am wondering if 231.25 sq in.--18.5x12.5 rad core is big enougth for a 350 cu. in. chev 400 hp. any thoughts? thanks Larry


[This is message #34248 by user gaylar20022002 on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace


Rad. sq. in. question

Postby h-bot » Thu Mar 14, 2002 3:58 pm

From: Bacchus_101573_REMOVE_700133_THIS_@yahoo.com


That sounds pretty small. Isn't that about the same size as the stock 4-cylinder core? How many rows?


[This is message #34251 by user Bacchus_101573 on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Thu Mar 14, 2002 4:40 pm

From: gaylar20022002_REMOVE_364382_THIS_@yahoo.com


I believe a Vega 4 cyl. rad is 12x12.25x1.25 giving 147 sq in. I was thinking 3 rows.


[This is message #34253 by user gaylar20022002 on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Thu Mar 14, 2002 8:21 pm

From: twelve_second_vega_REMOVE_684826_THIS_@yahoo.com


Vega with light duty cooling had a 12x12.25x1.25 radiator and Vega with HD Cooling had the 13"X21"X1.5" core...Robert


[This is message #34266 by user twelve_second_vega on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Thu Mar 14, 2002 8:27 pm

From: twelve_second_vega_REMOVE_970422_THIS_@yahoo.com


Last time I spoke to Griffin regarding a
replacement radiator for a Corvette, they told me you need
330 sq./in. minimum on a 350 horsepower V8 and 400
sq./in. is better if you can squeeze it in there.


Just passing the information along...Robert


[This is message #34268 by user twelve_second_vega on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Thu Mar 14, 2002 9:48 pm

From: gaylar20022002_REMOVE_246045_THIS_@yahoo.com


Robert. Thanks for the infor.I would like to put
a bigger rad in, but unless i cut the sheet metal
that runs across the front between the front fenders?
The hole in that piece is 20.75 x 12.5 in. The sheet
metal will block the core.


[This is message #34271 by user gaylar20022002 on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Fri Mar 15, 2002 12:15 am

From: eddievetter4u_REMOVE_603058_THIS_@yahoo.com


"Vega with light duty cooling had a 12x12.25x1.25 radiator and Vega with HD Cooling had the 13"X21"X1.5" core...Robert"
What was your question again? For a 400, right?


[This is message #34287 by user eddievetter4u on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Fri Mar 15, 2002 12:39 am

From: Phantom402_REMOVE_152112_THIS_@yahoo.com


Now if i can coola 350 in a ford ranger with stock 4 cylinder radiator I dont know why everyone else has trouble with 3 row monza radiators.
Lee


[This is message #34289 by user Phantom402 on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Fri Mar 15, 2002 1:01 am

From: cliffhangeriii_REMOVE_594036_THIS_@yahoo.com


I agree with you man. When I went from my 3 row to my 4 row there was only a small change in temp. about 3 degrees WOW. It wasn't worth it.


[This is message #34299 by user cliffhangeriii on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Sat Mar 16, 2002 4:24 am

From: twelve_second_vega_REMOVE_686318_THIS_@yahoo.com


I tested a stock Monza 3 row in my Vega against
my 4row (120 tube) Vega radiator. Even though the
Monza radiator has more surface area, I saw a
consistent 25 degree drop intemperature across the
board.

I have worked on stock V8 Monza's with the
factroy 2 row radiator. Upgrading to a 4 row made no
difference in cooling whatsoever.

Horsepower equates
to heat production. Cooling is made up of fluid
capacity and surface area. Some engines are harder to cool
than others.

Why do you think older Cadillac's
had 4row radiators that were almost as wide as the
car???...Robert


[This is message #34424 by user twelve_second_vega on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Sat Mar 16, 2002 4:29 am

From: twelve_second_vega_REMOVE_288329_THIS_@yahoo.com


My post simply identifies the (2) Vega core sizes. Total core support area on a Vega is 13" X 21" overall...Robert


[This is message #34425 by user twelve_second_vega on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Sat Mar 16, 2002 5:03 am

From: cliffhangeriii_REMOVE_420992_THIS_@yahoo.com


Because they weighed 2 1/2 tons and had 500 cid.


[This is message #34426 by user cliffhangeriii on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Sat Mar 16, 2002 5:03 am

From: twelve_second_vega_REMOVE_781585_THIS_@yahoo.com


I dec ided not to put anything in my Vega bigger
than the opening in the core support. I want 100% of
the surface area exposed to airflow all the
time.

Some people maintain that 16 fins per inch will
just plug up with bugs. In reality,mostmodern aluminum
radiators are even more dense in terms of fin
count.

This unit is very well made and is doing a great
job cooling my 302...Robert


[This is message #34427 by user twelve_second_vega on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Sat Mar 16, 2002 5:42 am

From: twelve_second_vega_REMOVE_728629_THIS_@yahoo.com


More importantly, they produced 375 HP and 500 lb.TQ in stock form...Robert


[This is message #34428 by user twelve_second_vega on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Rad. sq. in. question

Postby h-bot » Sat Mar 16, 2002 11:11 am

From: cliffhangeriii_REMOVE_261406_THIS_@yahoo.com


The horsepower and torque would be more
important??? I figured it would be the weight, ever see the
cooling system { Rad, Fan} in a heavy duty truck with
towing package??? My 78 GMC has a 165 net hp 350 with a
huge 3 row and 7 blade fan. I have also seen 70-76
full size buicks with 350 buicks running huge 3
rows...


Cliff


[This is message #34442 by user cliffhangeriii on Yahoo! Club GM HBODY: http://clubs.yahoo.com/clubs/gmhbody ]
h-bot
 
Posts: 53214
Joined: Fri Dec 15, 2006 8:30 am
Location: cyberspace

Next

Return to GM H-Body

Who is online

Users browsing this forum: Bing [Bot] and 1 guest