Highbredcloud
Active Member
Well...I didn't want to be involved in this but I must throw my $.02...Grn92LX is right...it's not peak lift that determines piston to valve clearance...its actually the duration at a certain lift...
As in regards to the heads...well the AFR 165's are a smaller cc head that flows the specific numbers with smaller valves than the TW's...TW's have more potential since they do have more meat on them...I know that you can still port the AFR's even more than they are...not sure how much...before they actaully become the 185's...Out of the box the AFR's will out perform the TW's...but if you port the TW's it's a different story...
As in regards to the heads...well the AFR 165's are a smaller cc head that flows the specific numbers with smaller valves than the TW's...TW's have more potential since they do have more meat on them...I know that you can still port the AFR's even more than they are...not sure how much...before they actaully become the 185's...Out of the box the AFR's will out perform the TW's...but if you port the TW's it's a different story...