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Old Jun 19, 2018 | 08:11 PM
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Can anyone tell me the difference between the overall width of a 67 small block radiator and a 67 big block radiator?
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Old Jun 19, 2018 | 09:43 PM
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Originally Posted by 65 396
Can anyone tell me the difference between the overall width of a 67 small block radiator and a 67 big block radiator?
I would check with Tom DeWitt or visit his website.

Larry

EDIT: His catalog shows a C2 Direct Fit that he says will work and fit for both BB and SB cars..............so chances are the dimensions for BB and SB width are the same. But verify.

Last edited by Powershift; Jun 19, 2018 at 09:57 PM.
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Old Jun 19, 2018 | 10:42 PM
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Originally Posted by Powershift
I would check with Tom DeWitt or visit his website.

Larry

EDIT: His catalog shows a C2 Direct Fit that he says will work and fit for both BB and SB cars..............so chances are the dimensions for BB and SB width are the same. But verify.
They aren't even close to the same. BB radiators are very wide.
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Old Jun 19, 2018 | 10:57 PM
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Originally Posted by 65 396
Can anyone tell me the difference between the overall width of a 67 small block radiator and a 67 big block radiator?
They are two completely different animals.

The small block uses a 19" wide aluminum radiator, with no tanks. 427's (except L-88's) used a copper radiator with attached tanks, that was about 24" wide, though the core itself was about 19".

L-88's used a 21" wide aluminum radiator, without tanks. This was the same radiator as the second design 65 396 radiator.
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Old Jun 19, 2018 | 11:42 PM
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Originally Posted by 65 396
Can anyone tell me the difference between the overall width of a 67 small block radiator and a 67 big block radiator?
The small block overall width is 22.5" all aluminum.

The BB uses a 22.5" core and the tanks add about 4.5" depending on where you measure.


Last edited by Tom@Dewitt; Jun 19, 2018 at 11:59 PM.
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Old Jun 20, 2018 | 07:27 AM
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Originally Posted by gbvette62
The small block uses a 19" (22.5") wide aluminum radiator, with no tanks. 427's (except L-88's) used a copper radiator with attached tanks, that was about 24" (27") wide, though the core itself was about 19" (22.5).

L-88's used a 21" (24.5") wide aluminum radiator, without tanks. This was the same radiator as the second design 65 396 radiator.
The GM part book uses the term 19" and 21" for the 3155316 and 3007436 however the actual overall is 22.5" and 24.5" respectively.
They did this because the correct way to talk radiators is never the overall size but instead the fin area of the core. The reason this is done is because when you recore a radiator the only thing you care about is the core size. The only exception (IMO) to this rule is the old plate aluminum radiators because they were all core and no tanks.



Last edited by Tom@Dewitt; Jun 20, 2018 at 10:37 AM.
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Old Jun 20, 2018 | 09:36 AM
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[QUOTE=Tom DeWitt;1597442618]The GM part book uses the term 19" and 21" for the 3155316 and 3007436 however the actual overall is 22.5" and 24.5" respectively.
They did this because the correct way to talk radiators is never the overall size but instead the fin area of the core. The reason this is done is because when you recore a radiator the only thing you care about is the core size. The only exception (IMO) to this rule is the old plate aluminum radiators because they were all core and no tanks.


Thank you Tom.
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Old Jun 20, 2018 | 08:59 PM
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Originally Posted by gbvette62
They are two completely different animals.

The small block uses a 19" wide aluminum radiator, with no tanks. 427's (except L-88's) used a copper radiator with attached tanks, that was about 24" wide, though the core itself was about 19".

L-88's used a 21" wide aluminum radiator, without tanks. This was the same radiator as the second design 65 396 radiator.
And the radiator support and radiator upper and lower mounting provisions are COMPLETELY different between SB's and BB's.
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