making my 400ex faster?

[81 clark racing]

hey guys i was just wondering what will make my 400ex faster i have full procircuit t4 pipe, uni air filter , modified air box, stage 2 jet kit, and wb rev box. thanxs

[atvracer980]

Faster ???- Why is speed an issue ? Can you run 70 mph through the tight woods ?? heck-no. Are you building a drag quad ? What are your intentions ???

[81 clark racing]

haha no last time i checked i was topping around around 78-80. i do alot of long dirt road, trail racing racing and ice racing

[2004exrider]

Im pretty sure he means faster acceleration, not top speed. You've already got a pipe and filter. You can always change the gearing a little, geta cam and piston. How are you topping out at 80 mph?

Jimmy

[81 clark racing]

yea thats what i was thinking thanxs. i topped mine out between 78-80 next 2 my buddies mustang goin down a long straight road

[rooster_20]

Unless you have changed the gearing or tires, your top speed calculation is a lie.

[81 clark racing]

it has holeshot hd tires 20x11x9 an i got clocked next 2 a car so its a ruff number

[rooster_20]

Yea everybody on here tries to say their atv will do 80+ mph and its kind of rediculious. But atleast you aknowledged that it was a rough estimate. I was clocked at 72mph when I had 22inch mudlights, but I wasn't hitting the revlimiter. I had a grizzly 660 behind me so thats a pretty close guess. Now with my 20inch razrs I could get 70 I would say.

[ogre]

With that question its all about how much money you wanna spend. I just put a wiseco 10:1 and hmf. made it a 416. New timing chain. For the motor work it was between 500 and 600$. Labor and parts. Looks like you already got a aftermarket pipe. So its just how much you wanna spend and get into the reliability. I went with a smaller bore and less compression because i wanna have a dependable quad for quite some time. But as some of the guys can tell you, you can go big bore, stroke,cam, higher compression and get some impressive increases.