Can anybody give me some wedsite that modified nitro engine

try rbmods.com

its actually rbmods.net

www.TrickPonYracing.com

www.murnanmodified.com

if you want a real fast engine

if we're talkin about pre modded motors here the list is endless!!

Yes.....it will be the endless list of modders......but you should go with what factory guys are racing with!!!!!

Murnan is one of the best.

What's up Stefan....

yup and uriah murnan is a top guy to!

Any sites with info on how to port an engine yourself? Tricks and techniques?

Murnan.

Race one or chase one.

http://www.tntmods.com/

very nice, but is all that polishing worth it or even beneficial? I was always under the impression the finish left from a good bit of machining or grinding will create a faceted surface ideal for gas flow, the golf ball effect and all that.
very pretty though!

murnan's are the fastest by far. thats if your lookiind for H.P.

Polishing doesn't worth a thing, just waist of time!!!
With Brian Kinney from Xdyno we did some test and max RPM and HP we got from motor which was plain from cutting tools, no polishing no massaging and it was 45 K with .92 HP on his certifyed dyno ( just for comparicing RB 5 ports Rody modded 43K and .9 HP). No cuts on sleeve, no turbo scoop, but big chamfer on exit of center hole, basecaly its look like stock engine but with my P/L set and my cranck.
Edward

will open some numbers if anybody wants to play with their hardware-induction open at 37 ABDC and close at 59 ATDC, exhaust 162, transfer120.
Hope this will help.
Edward