big bore question

[youngin]

Im gonna put a GTthunder 440 kit in my z400.. Can anyone tell me from experience,,, what kinda gain this will make?? What cams should i install with this kit????

[BLAZE1]

That should be sweet!
It will make it a lot easier to keep up w/ the 450's!
:devil:

[Z-Racer-5c]

Have the head ported and polished at (Pro One Racing)

They can do the big bore kit also.
I would go ahead and get the 453 big bore

Put the Web Cam (Grind 288 / 293) PN: 70-592 it is for mid range.

Get a Kehnin 41mm carb and a large dia. exh pipe

If you send the entire motor they will do it all for you and put it back together. These guys are great. They race Pro Challenge cars that have motorcycle engines in them and Dale (the machinist) is great. They did mine and it is super fast. I have not met a 450 that I can,t beat.

[youngin]

Do they have a website?? What did it cost you.. I can get Laz at GTthunder to do the 450 kit for $1500.00.

[Z-Racer-5c]

I need to know what is included in that price?? Everything!

The web addy is WWW.PROONERACING.COM

It has the phone and fax. Dale is the machinist to talk to. Let him Know that Dennis Borger told you to call him. These guys are great. As a matter of fact I am fixing to buy a Pro Challenge car from them.

Good luck. If there is anything I can do for you please let me know!!

Dennis