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Feb 28, 2007 | 07:43 PM

71bbcamaro

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From: long island

Need Help

i got my 396 bored over 60.how many cubic inches does it have now.i thought like 415cubic inches but i need to know.thanks

Feb 28, 2007 | 09:24 PM

mrdragster1970

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From: Illinois, RT 66 dragway area

.

bore X bore X stroke X 6.2832

.

Mar 1, 2007 | 11:23 AM

Z-Convert

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It's a 406..... Same bore as a .030 over 400 SB with the same stroke.

Mar 1, 2007 | 06:47 PM

71bbcamaro

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From: long island

Quote:

Originally Posted by Z-Convert

It's a 406..... Same bore as a .030 over 400 SB with the same stroke.

so your saying its a 406 big block.

Mar 2, 2007 | 02:53 PM

Z-Convert

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Quote:

Originally Posted by 71bbcamaro

so your saying its a 406 big block.

Provided you're using the 396 crank (3.76" stroke) then yes, it's a 406 cid big block.

BTW: Mr Dragster's formula is correct if you wish to check for yourself.

A 415 cid engine with a 3.76" stroke would require a bore of around 4.188"

Last edited by Z-Convert; Mar 2, 2007 at 02:58 PM.

Mar 5, 2007 | 04:10 PM

71bbcamaro

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From: long island

ok thanks.406 cubic inches.what hp will i make.i have roller rocks,roller cam,aftermarket pistons,alot of comp cam parts.hooker headers.3 inch exhaust.more but just cant remember

Mar 5, 2007 | 07:50 PM

mrdragster1970

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From: Illinois, RT 66 dragway area

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depends on intake flow and cam combo, need more info.

.

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Mar 6, 2007 | 12:30 AM

Z-Convert

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Quote:

Originally Posted by mrdragster1970

.

depends on intake flow and cam combo, need more info.

.

That's why I didn't touch this one. Too many missing variables.

Besides what mrdragester sez (I & E flow @ lift and duration), I think we can safely pin it down to somewhere between 300 and 1,000 depending on compression and how well (or if) you blueprint the engine. At a minimum you're probably looking at 1hp per cid (at the crank) as that is way easy to hit even if you just slap it together.

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Mar 7, 2007 | 01:41 PM

71bbcamaro

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i will find that out but im not making over 650hp n not less then 400hp.

Mar 7, 2007 | 01:59 PM

#10

mrdragster1970

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From: Illinois, RT 66 dragway area

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my vote would be 300-550 as I said depending on heads (stock-killer), Cam (roller-not), carb (stock-optimal), exhaust (manifold-headers), intake (stock-optimal) ect ect

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