GT40X Heads (64cc) and F303. Piston clearance?

T

thefordkid1

New Member

Oct 19, 2004

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Sep 29, 2006

#1

• Sep 29, 2006

• #1

Hey fellas,

I have gt40X heads (1.94 and 1.54) never milled.
Stock 1994 5.0 block and pistons. Never machined.
I want to purchase an F303 cam.
I know I must check piston to valve clearance.
If I install it and it doesn't clear I most likely will not be able get a refund of my $200.

Does it usually clear?

 

T

thefordkid1

New Member

Oct 19, 2004

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Sep 29, 2006

#2

• Sep 29, 2006

• #2

p.s. w/ 1.6 rockers

 

R

ratrapp2

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Jun 24, 2005

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Sep 30, 2006

#3

• Sep 30, 2006

• #3

i've got the gt-40x heads with a b-cam and 1.72rrs.that should equal your f-cam and 1.6s.mine clears fine.let me know how it runs because after christmas i'm going to switch to 1.6s and a f-cam.

 

T

thefordkid1

New Member

Oct 19, 2004

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Sep 30, 2006

#4

• Sep 30, 2006

• #4

ratrapp2 said:

i've got the gt-40x heads with a b-cam and 1.72rrs.that should equal your f-cam and 1.6s.mine clears fine.let me know how it runs because after christmas i'm going to switch to 1.6s and a f-cam.

Click to expand...

Close except the f-cam has a LSA of 114 vs. 112 for B.
Thanks for the reply. If I try it....I'll let you know rattrap.
Someone on here must have an F with GT40X heads.
Where are you?

 

enyawix

Member

Dec 18, 2005

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127.0.0.1

Sep 30, 2006

#5

• Sep 30, 2006

• #5

I have b-cam and 1.72 what is my lift etc?

 

Jozey

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Nov 11, 2003

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Tucson,AZ

Sep 30, 2006

#6

• Sep 30, 2006

• #6

enyawix said:

I have b-cam and 1.72 what is my lift etc?

Click to expand...

you should be right around a .518 lift i belive

 

T

thefordkid1

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Oct 19, 2004

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Oct 1, 2006

#7

• Oct 1, 2006

• #7

Hey Jozey. I see in your sig you have an f303 and afr heads. Stock pistons?

 

R

ratrapp2

New Member

Jun 24, 2005

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Oct 2, 2006

#8

• Oct 2, 2006

• #8

jozey,actually it's .516.you take the lift which is .300,multiply by 1.6 and it's .480.1.72 by .300 is .516.

 

T

thefordkid1

New Member

Oct 19, 2004

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Dec 10, 2006

#9

• Dec 10, 2006

• #9

F cam and 1.6 rockers cleared fine on my stock block and unmilled 64cc GT40X heads. Pulls hard till the rev limiter (6250 rpm). No driveability issues either. Very happy.