400 440 engine swap

  • schvizen
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400 440 engine swap

07 Oct 2006 08:37
#82431
Hello all,

How much trouble would it be to swap my 1975 kz400D motor with an early 440 motor?

Thanks.

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  • CruisingRam
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Re: 400 440 engine swap

07 Oct 2006 08:44
#82433
Sorry- opened this thinking you were talking about bb mopars LOL
1975 Z1 B 900- soon to be heavily modded
Pahoa, Hawaii is my new hom
I am working hard to save up the shipping money to get my shop opened here in Hawaii
I hate electrical stuff.

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  • steell
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Re: 400 440 engine swap

07 Oct 2006 08:53
#82436
Check with the 400/440 experts at www.kz400.com :)

That is an amazing site by the way, tons of info for the 400/440 there :)

Post edited by: steell, at: 2006/10/07 11:54
KD9JUR

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  • 77KZ650
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Re: 400 440 engine swap

07 Oct 2006 09:22
#82444
why not try for a 750 twin motor? If guys can cram a 1000 motor into a 650 frame, Im sure somebody could figure out how to put a 750 into a 400 frame.
07 MDP Rookie of the Year
01 ZX-12R street/drag bike. 8.97 @155.7 pump gas, dot tires, no bars, no power adders. top speed in the 1/4: 161MPH

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  • steell
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Re: 400 440 engine swap

07 Oct 2006 10:38
#82451
77KZ650 wrote:
why not try for a 750 twin motor? If guys can cram a 1000 motor into a 650 frame, Im sure somebody could figure out how to put a 750 into a 400 frame.

It would probably be easier to put the 1000 motor in the 400 frame than the 750 twin motor. The 750 twin is one tall motor :)

I think the 440 motor is a better idea, and I think it's pretty much a bolt in proposition. Just going by what I recall reading about the subject in the past.
KD9JUR

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