Has anyone seen this? - Toyota Yaris Forums

severous01 · 05-19-2009, 04:19 PM

hmmm...33% increase isnt too bad, but i've seen 50% on a good head job...heh

any way, cams have a lot to do with it, as well as programming. if you notice that when you buy a head cam package through summit or jegs or even edelbrock for v-8 cars...they will use their heads, their cam, their springs/rockers/lifters, and even go as far as using their manifolds. but all you get when you order the heads is the heads...option for assembled or not.

any way...i'm sure i could easily get 45hp out of a head job...if i replaced cams/tuning and a throttle body with the head as well.

05-19-2009, 04:19 PM	#11
severous01 Drives: 2008 yaris, stripped, red Join Date: Jan 2009 Location: SE Texas Posts: 977	hmmm...33% increase isnt too bad, but i've seen 50% on a good head job...heh any way, cams have a lot to do with it, as well as programming. if you notice that when you buy a head cam package through summit or jegs or even edelbrock for v-8 cars...they will use their heads, their cam, their springs/rockers/lifters, and even go as far as using their manifolds. but all you get when you order the heads is the heads...option for assembled or not. any way...i'm sure i could easily get 45hp out of a head job...if i replaced cams/tuning and a throttle body with the head as well.