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Old 10-17-2018, 11:58 AM   #1
Indychus
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Z'd Frame Radiator

I Z'd the frame on my '68 3.5 inches. The stock radiator no longer fits due to the dropped frame horns. I am planning to cut the lower hose neck off and move it up 3" to clear, but I wanted to see if there is a better option first.

What radiators are you guys using with Z'd frames?

Attached some pics of my truck, the second pic shows the dropped frame horns.
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Old 10-17-2018, 12:35 PM   #2
HO455
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Re: Z'd Frame Radiator

Your truck will have larger radiator requirements than most of the Z'd frame trucks due to that power adder that is complicating your forward vision.
I would try posting this in the engine section for information on minimum radiator sizes or contact your engine builder (assuming that you had it built for you). You may have to build a custom core support/radiator to give you the cooling that your motor will need.
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Old 10-17-2018, 12:47 PM   #3
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Re: Z'd Frame Radiator

It's a lot milder than it appears, the blower is mostly for the look. I'm hoping to get away with a stock style radiator. I asked my engine builder (me) and he said to give it a shot and see what happens I can always go back and cut it up for a thicker radiator in the future as needed.

It looks like some guys are using a 73-87 radiator, but looking at pics online I can't tell what is different about it than my 68 rad.
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Old 10-17-2018, 01:20 PM   #4
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Re: Z'd Frame Radiator

I'm not 100% sure but I believe the difference in square body radiator and your 68 is in the angle of outlet. As long as your builder is happy then all is well!
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
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1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377
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Old 10-17-2018, 04:25 PM   #5
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Re: Z'd Frame Radiator

that looks amazing.. i like it..
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Old 10-17-2018, 04:31 PM   #6
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Re: Z'd Frame Radiator

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that looks amazing.. i like it..
Thanks, almost 9 years to get to this point!
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Old 10-17-2018, 04:40 PM   #7
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Re: Z'd Frame Radiator

can you mod the Rad core to "sink" the radiator forward toward the Grill?
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Last edited by gearheadperkins; 10-17-2018 at 05:32 PM.
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Old 10-17-2018, 06:01 PM   #8
GASoline71
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Re: Z'd Frame Radiator

Square body radiators are too tall. You might just look in to a custom radiator being made.

Gary
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Old 10-18-2018, 08:14 AM   #9
Indychus
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Re: Z'd Frame Radiator

Thanks guys, all good ideas. I have a new stock radiator so I'll try some things this weekend. I was hoping there was a "standard" radiator everyone used since a lot of these trucks got Z'd before the dropmembers really caught on. Looks like a custom radiator or cutting into the core support may be the best options.
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Old 10-18-2018, 05:51 PM   #10
GASoline71
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Re: Z'd Frame Radiator

In 35 years I've seen 3 Z'd frames on these trucks. Yours is one of them, the other 2 were in person.

Gary
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'cuz chicks dig scars...

My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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