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Old Mar 8, 2002 | 10:44 PM
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77 460

I've got a 77 f-150 w/ 460 C6/ 3.00 9".
It has an Edelbrock performer manifold, 750 carb and double roller chain, CompCams 268H, lifters and valve springs, with Dynomax headers, 2 1/4" pipes with mustang flowmasters.
Anyway, My question is, what is the actual bore and stroke of the 460? The Chiltons and Haynes manuals are wrong because they only come up to about 422ci. They also say that the 460 has a shorter stroke that the 400ci.
Thanks, Jimmy
 
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Old Mar 8, 2002 | 11:22 PM
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77 460

460 bore is 4.36" and stroke is 3.85"
 
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Old Mar 8, 2002 | 11:53 PM
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77 460

That only comes up to 421.66 CI.
The formula is Bore x Stroke x # of cyl. x 3.14 = CI
4.36 x 3.85 x 8 x 3.14 = 421.66 or 422
4.00 x 3.00 x 8 x 3.14 = 301.44 or 302
4.00 x 3.50 x 8 x 3.14 = 351.68 or 351
4.00 x 4.00 x 8 x 3.14 = 401.92 or 400

They are all close except for the 460. Those are the same dimensions that I had.
Jimmy
 
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Old Mar 9, 2002 | 12:42 AM
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77 460

Here is a formula I have and it works out.

0.7853982 x bore x bore x stroke x cylinders = CID

Which comes out to 459.84723 rounded off = 460.
 
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Old Mar 9, 2002 | 01:01 AM
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77 460

Thanx, That works!!
 
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Old Mar 9, 2002 | 05:41 PM
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77 460

I cut that out of a Hot Rod magazine eons ago and kept it.
 
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Old Mar 9, 2002 | 07:53 PM
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77 460

I'm glad you saved it.
Thanks again,
Jimmy
 
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Old Mar 11, 2002 | 08:07 AM
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77 460

here is a good site.
http://www.smokemup.com/utilities/calc/displacement.cfm


Dre'
1978 F-150, 460ci(750cfm,Edelbrock Performer,Dynomax Ceramic Coated headers,etc.)Auto-C6,373:1 - 9" Posi.

 
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Old Mar 11, 2002 | 01:42 PM
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77 460

just to add something, the 400 does have a slightly longer stroke than the 460, i forget the #......
 
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Old Mar 11, 2002 | 06:04 PM
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77 460

The 400 has a 4" bore and a 4" stroke.
 
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Old May 6, 2002 | 03:03 AM
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77 460

The formula mathematically is pi X radius squared X height X number of cylinders.
This equates to 3.14 X (half bore size)squared X stroke X 8.
You get the same number as the formula. It is a volume formula of a cylinder.
Mark


Ford started it; Ford will finish it!

 
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Old May 7, 2002 | 01:21 AM
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77 460

[updated:LAST EDITED ON 07-May-02 AT 02:23 AM (EST)]Huh ????? :-) Just kidding.
 
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Old May 7, 2002 | 08:52 PM
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77 460

 
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