it proably from engine not working as hard to turn the 21cm versa the 16, but i think if the exhaust manifold and the 16 would match better it would run great. the 16 need the flange housing of the 21

 

die grinder will fix that, on my 14cm i gasket matched it but then looking at the manifod it matched the housing before i "ported it".

 

next time i'll work on it

 

i matched the gasket and then smothed out all the casting i could.

now you have to figure out what you want to upgrade next, but be for warned, the more power you get the more weak parts you find, i know from experience

 

i know a white parts truck w/ flames

 

cool, i need some too

 

Confedpirate, do you know how much power and torque your truck is making now with the modifications listed in your signature? Have you gotten it dyno-tested yet? I'm looking at doing the same mods with the same AeroTurbine muffler and am wondering what it would be making increased from the stock 160 HP/400 FT LBS rating. Thanks for your reply.

Salvy

 

well i heard that truck and they may call it a muffler but when you punch it, it's still loud.
spring and housing are notice able difference in power and so is the turns on the fuel screw-seams like you double the power, or at least thats how it flet on my truck.


hows the power working out?