stang8689

I got the xe 276 but mine is for 1.7 rockers so double check that when you are looking and what springs are you running might need the comp springs

silverpony91

I'd be running the 276 with 1.6 rockers. I guess that would knock lift down to @ .512? Am i defeating the purpose of this cam if I don't go with the 1.7's?

AdderMk2

you CAN run the cam with 1.6 rockers... but if you order it from summit.. just order a single 1.7 ratio rocker... do the PTV checks with the 1.7 on each cylinder and see if it clears. If it does... order the other 15

silverpony91

I like the way you think! Thanks for all the input guys- this is the first time I've torn into one of these motors, and I've read a ton on these forums. I'm probably more cunfused now than I was before I started, but I'm getting a much needed education! Thought I had my mind made up on TFS1, but for now XE276 with 1.6rr's. Adder might smack that TFS over my head if I got it!

jkrum10238

you don't need much more lift that .500 on these heads, they usually max around there from what ive read. i went with the tfs1 for my ported gt40ps

silverpony91

How does it run? Will it pull to @6000?

AdderMk2

if the peak flow is achieved around .500 lift... why would you want something that just barely hits .500...

wouldnt it make more sense to get the valve open to or past the peak flow number, so you are flowing peak values for longer????

get the 276, you'll thank me later

jkrum10238

or a cam that dwells on .500 im not say wat cams better just adding my 2 cents and what cam i choose

silverpony91

Ok- how bout this. Can you get away with 1.7's on the TFS1? I know I would need to check, but does anyone have firsthand experience? I trust your judgment Adder, just curious........

sn95_331_GT_ yellow

on the small valves those heads will come with (well, relatively speaking), more than likely, yes it will clear, but you NEED to check...

you could also run a TFS 2 on 1.6 rockers, that is a much more aggressive cam that the TFS 1...

if that clears, (obviously) go with the 2...