5.4 PTV clearance...

Three50won

10 Year Member

Jul 11, 2010

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Nov 5, 2010

#1

• Nov 5, 2010

• #1

I am in the process of building a 5.4 2V. I was intent on using Comp Cams stage 2 cams but I am wondering if the stage 3 cams will give me any piston issues. The engine will have flat top pistons, 10.7:1 CR, and I'm using Patriot stage 2 heads. I think I should be ok but does anyone have any info that might be useful to me on this? I'd hate to buy cams that I can't use...thanks!!

 

nickmckinney

Member

Sep 25, 2009

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Nov 5, 2010

#2

• Nov 5, 2010

• #2

You should have no problems at all unless the cams are a country mile advanced from where they are supposed to be.

 

trinity_gt

10 Year Member

Jan 31, 2003

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Canada

Nov 5, 2010

#3

• Nov 5, 2010

• #3

If you want to be absolutely sure, pull the heads and put a bit of clay on the piston crowns. Re-assemble, rotate the engine a few turns, pull the heads and measure the impressions in the clay at their thinnest point.

It's a lot of work but how much peace of mind do you want?

 

Three50won

10 Year Member

Jul 11, 2010

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Nov 5, 2010

#4

• Nov 5, 2010

• #4

Thats a good idea Trinity. Yea it's a lot of work but you can't put a price on peace of mind...Thanks Nickmckinney, I'll keep that in mind when I do the build...