Iroc

im looking at a 347 stroker from ford strokers and have the option of inline or tfs twisted wedge reliefs. question is all heads other than the tfs inline?

mjr46

decide what head you want to use first then that'll dictate piston relief style, but most heads are of an inline style other than the tfs

AdderMk2

the probe SRS pistons that Woody uses have both... but you really need to just choose a head so he'll know whatcha got

tinman

Woody would need to know what heads you are using as well as the lift of the intake valve in order to get the relief right.
What I would do is to play it real safe and 'fudge' the intake lift a little.
Like this, if the lift is going to be .585" I'd go ahead and say .600".
Gives more tuning oprions in the future as well as a little play for machine work (decking).....

aode08

ford strokers . com is the place to ask, im sure they have been asked a million times lol

Joel5.0

Yup.... 99% of them are inline setups however, if you choose the inline piston crown layout, that does not mean a set of TFS TW heads cannot be used. Due to their design, they provide a ton of valve free drop clearance during the overlap cycle, reason why the TW heads are the best alternative if you have an '86 short block and don't want to worry about the flattop pistons w/out valve relieves. Total valve lift has nothing to do with piston-to-valve clearance.