440ci Questions

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Mar 5, 2008 | 06:15 PM

vetteman012002

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From: Middletown MD

440ci Questions

Don't hate on me to hard......I was talking to a forum vendor about building me up a 408 stroker, or even a 416.....I am curious as to what block I need to make a 440ci. I heard I needed an LS7 block inorder to make a 440 is this correct? I am looking to put the best of the best forged internals in it to be able to handle a 400-500 shot of nitrous in 2-3 stages. If you can please give me a run down of what I would need as far as block style, crank size "which I think is a 4.000," rod sizes, and piston sizes that would be greatly appreciated.

I will be using a set of Trick Flow 235's and a custom ground nitrous cam for this application. I am just looking for the specifics as to what is needed to acheive a 440ci motor.

Thanks!!!

Mar 5, 2008 | 06:21 PM

LinearX

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From: Chattanooga TN

It can be done with an LS2 block, but it will have to be re-sleeved with aftermarket sleeves in order to attain a bore large enough to make the desired cubic inch you're after.

Mar 5, 2008 | 06:24 PM

vetteman012002

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From: Middletown MD

Quote:

Originally Posted by LinearX

It can be done with an LS2 block, but it will have to be re-sleeved with aftermarket sleeves in order to attain a bore large enough to make the desired cubic inch you're after.

So would that be cheaper or more expensive then just getting an LS7 or is an LS7 even what I need? And if I resleeeve something how reliable is that? Can is with stand the 400+ shot of NOS?

Mar 5, 2008 | 06:24 PM

Westlotorn

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From: Folsom CA

I have seen guys use the GM Performance Blocks to take traditional Small blocks out to 454 inches. The LS I am less familiar with.
Hot Rod March 2008 has an article on the LS7 crate engine.
Good Luck

Mar 5, 2008 | 11:04 PM

HPS MASTER TECH

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i just finnished a c5 with a 440ci ls1, ls7 head.

it would be a lot less headache if you got a motor from texas speed.
they can help build your combo. and there motors are allways perfect.

Mar 5, 2008 | 11:18 PM

vetteman012002

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From: Middletown MD

Quote:

Originally Posted by HPS MASTER TECH

i just finnished a c5 with a 440ci ls1, ls7 head.

it would be a lot less headache if you got a motor from texas speed.
they can help build your combo. and there motors are allways perfect.

So you turned a regular LS1 into a 440ci?

Also I have talked to Jason a bunch of times, a few years ago when I had my 04 ZX10R I was going to trade him that for a race motor for my Z06.

I will give them a buzz tomorrow and see what the can do for me.....

Mar 5, 2008 | 11:33 PM

LinearX

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From: Chattanooga TN

Quote:

Originally Posted by vetteman012002

So would that be cheaper or more expensive then just getting an LS7 or is an LS7 even what I need? And if I resleeeve something how reliable is that? Can is with stand the 400+ shot of NOS?

I think a set of Darton sleeves is in the $1300 range. Then you have to pay for all of the machine work to the block, and you have to find a shop that has done them before, as I hear they're not the easiest thing in the world to get right. I'm not sure how that compares in price to an LS7 block.

As for how it would hold up to power...I have no clue.

Mar 5, 2008 | 11:37 PM

0Randy@DRM

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From: Burlington NC

Well, if you plan on 400 and 500 shots of juice. You should get into a GM race block. 4.125 bore and 4.100 stroke and you are right at 440 cubic inches.

Randy

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Mar 6, 2008 | 06:13 AM

see5

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From: Hobart, WI

If it were not for the nitrous I would favor a LS7 stroke,r however given your plans I think you would last longer with a LSX iron block.

Mar 6, 2008 | 01:18 PM

#10

vetteman012002

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From: Middletown MD

Quote:

Originally Posted by Randy@DRM

Well, if you plan on 400 and 500 shots of juice. You should get into a GM race block. 4.125 bore and 4.100 stroke and you are right at 440 cubic inches.

Randy

Is this GM race block iron or aluminum? Does it have the 6 bolt per cylinder head pattern? and do you have a part #??

Thanks

Mar 6, 2008 | 01:19 PM

#11

vetteman012002

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Quote:

Originally Posted by see5

If it were not for the nitrous I would favor a LS7 stroke,r however given your plans I think you would last longer with a LSX iron block.

Std deck or tall?

Mar 6, 2008 | 08:50 PM

#12

0Randy@DRM

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From: Burlington NC

Quote:

Originally Posted by vetteman012002

Is this GM race block iron or aluminum? Does it have the 6 bolt per cylinder head pattern? and do you have a part #??

Thanks

The block is aluminum, I don't have the part number. It has the standard head bolt pattern. The LSX would be a good too!!

Randy

Mar 6, 2008 | 09:24 PM

#13

vetteman012002

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From: Middletown MD

Quote:

Originally Posted by Randy@DRM

The block is aluminum, I don't have the part number. It has the standard head bolt pattern. The LSX would be a good too!!

Randy

Is it called the "GM race block?" What needs done to it to make it a 440? Bore size? Stroke?

Mar 6, 2008 | 09:55 PM

#14

LinearX

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From: Chattanooga TN

Quote:

Originally Posted by vetteman012002

Is it called the "GM race block?" What needs done to it to make it a 440? Bore size? Stroke?

Perhaps he's referring to the C5R block? Just a guess.

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