Piston to valve

[dutchy351]

Hi guys.

 

I'm in the middle of building my first barra and I'd like some advice

 

To give an idea Im running manley pistons 9.0:1, standard valves and crow cam 3232593/3242593 cams .495 lift, crow cam vtkba6-t 110lb valve springs. The deck has been machined to 0 and I'm using a .040" cometic gasket

 

I used the modeling clay method to check. On the exhaust side I've got roughly .300" clearance due to the piston been fly cut. Moving onto the intake and I'm finding roughly .090" clearance which is due to the intake side not having fly cuts.

 

My question is, does anyone have any experience with the same combination or similar using these specific cams/pistons and was there an issue with P-V clearance?

 

Also, would you be happy with .090" on the intake side? I'm very likely to spin the engine out to 7000rpm and I've never really played with VCT and I'm unsure if this would cause an issue.

 

Cheers