Piston to Valve clearance?

[JJ95GTID]

I am thinking of using 1.7:1 RR with the Steeda #19 cam which will increase the lift to .510".
The duration @ .050" is 220* intake 226* exhaust.
Just want to know if there is a piston to valve clearance issue Anyone using a cam with at least .510" lift on a stock bottom end? Did you have to notch the pistons?

 

[Rootus]

Lift isn't the problem (since max lift occurs when the piston is near the bottom of the stroke). Duration and overlap are what cause problems. I run a custom cam that is more aggressive than a Steeda #19 with 1.7 RR's, and my bottom end is stock. But ideally you should still check PTV clearance for yourself to be sure, since production tolerances can stack up.

Dave

 

[JJ95GTID]

Thanks Dave

Just don't want to order the 1.7s' and then not be able use 'em.

Joe

 

[Joes95GT]

Duration doesn't really have that much of an affect on such a short duration cam if it is installed on a late intake centerline.

What the the valve events @ 0.050"?

Joe

 

[FordStang]

im using 1.6 RR's with the B cam

 

[Joes95GT]

im using 1.6 RR's with the B cam

Joe