Thread: Larger Cam With Larger Rocker Ratio's?

Originally Posted by Bio248

top end is including heads? ported how? by whom?

yes. the heads arent really ported all that they could be. since i did them myslef. i basically just took off all the rough edges inside the ports and smoothed it all out. i think im gonna go back into them tho and port it out more. i bought this porting kit at an auto parts store near my house.(not an autozone). more of a high performance store. van senus. its local. it came with a whole bunch of different bits. i used a die grinder(spellcheck). i ported he outer edge of my throttle body, like where that lip is. ported out the sc around the inlet a lil and made the outlet bigger(triangle shaped opening). i also have ported manifolds, but i dont think they do much. they were free basically so whatever. it was my first time porting so i didnt want to do much. my cousin did his heads on his LS1 so he helped me too.

Originally Posted by JJ91284

Porting the inlet is fine on the supercharger as long as you tried to smooth out the rough casting. Touching the supercharger outlet triangle is bad and you probably hurt the efficiency of it some. The only thing you really want to do is take the sharp edge away from the outlet "V" on the inside and outside so its a smoother transition and port closer to the snout end of the supercharger as this is where the most volume of air comes out of the charger.

hmmm. can you get a picture of a ported m90 and a stock m90 to show the difference?

Originally Posted by JJ91284

This is a good outlet pic from our vendors

https://www.zzperformance.com/products_img/162_1.jpg

alright. well i have my whole engine apart so im gonna start doin some more porting.