IM lookin to do a big bore 440 kit on my honda 400ex ! ANd throw a hot cams stage to in and a edlebrock 440 carb! Does it give great power? and how reliable is it I need to know asap before i make a mistake?
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Junior Member
IM lookin to do a big bore 440 kit on my honda 400ex ! ANd throw a hot cams stage to in and a edlebrock 440 carb! Does it give great power? and how reliable is it I need to know asap before i make a mistake?
2003 Honda 400ex
Fmf powerbomb header
Fmf Titanium 4 Exhaust
Whit Bros. Rev Box
Houser Steering Stem +1
Tag 14 front sprocket
Tag 38 Rear sprocet
Pro taper S/E bars
MMF Air Scoops
Itp Sand Stars
FMF Jet kit
DID X-ring Chain
Senior Member
Well any big bore can be very reliable if you build it right! I'd say you will see excellent power gains. But it all depends on what you're doing. The mods you have right now look like it will go great with the 440 and carb ETC...
2007 CRF450R
Pro Taper evos, renthal sprockets, renthal chain
87 250x
HMF, PRM, MAXXIS, RENTHAL, DID, PRO TAPER, ITP.....
Junior Member
Thank you so much , so anyone tht reads this and has wat i want to do let me know so i can do it !!! thanks
2003 Honda 400ex
Fmf powerbomb header
Fmf Titanium 4 Exhaust
Whit Bros. Rev Box
Houser Steering Stem +1
Tag 14 front sprocket
Tag 38 Rear sprocet
Pro taper S/E bars
MMF Air Scoops
Itp Sand Stars
FMF Jet kit
DID X-ring Chain
Registered User
Personally,and remember this is just my opinion, I wouldnt go to a 440 just yet. I would go to a 416, assuming you have the stock bore. I would do that and then when it is time to rebuild, then go to a 440. I have a 416 and it is just as fast as most of the 440s i have raced. It will save you a little money and make it so you can rebuild later on without having to get a new cylinder.
Registered User
Oh, and no matter what you decide to do. If you leave it stock or even get a 500 kit, getting the head ported will help out a lot. It makes a world of difference on a 400.
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