Piston to Valve clearance?

JJ95GTID

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Sep 22, 2003

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Phoenix, AZ

Aug 5, 2004

#1

• Aug 5, 2004

• #1

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

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Feb 8, 2003

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Portland, Oregon

Aug 5, 2004

#2

• Aug 5, 2004

• #2

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

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Sep 22, 2003

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Phoenix, AZ

Aug 5, 2004

#3

• Aug 5, 2004

• #3

Thanks Dave

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

Joe

 

Joes95GT

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Jan 23, 2003

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Delaware

Aug 5, 2004

#4

• Aug 5, 2004

• #4

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

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Sep 19, 2002

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Orange Park, FL

Aug 5, 2004

#5

• Aug 5, 2004

• #5

im using 1.6 RR's with the B cam

 

Joes95GT

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Delaware

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#6

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FordStang said:

im using 1.6 RR's with the B cam

Click to expand...

Joe