cylinder heads...

92_LX_5.0 · January 30th, 2007, 10:13 PM

i have a question...i am running a b303 cam. i am going to go with afr heads, my question was, how can i be sure that i will have piston to valve clearance....i mean, before i buy the heads, where can i find if the cam will allow me to use the heads?

1slo5.0 · January 30th, 2007, 10:18 PM

You need to check valve to piston clearance with the new heads and the cam you will be using. Every engine is different due to machining tolerances and other variables. Two identical engines with the same heads and cam can (and probably will) have two different measurements for valve to piston clearance.

I also wouldn't use a B303 cam. If you are going to spend the money on good heads, spend the money on a good cam.

5literJeff · January 30th, 2007, 10:37 PM

If a B303 isnt a good cam then what do you recommend?

92_LX_5.0 · January 30th, 2007, 10:41 PM

if the piston does not clear the valves, how do you fix the problem??

1slo5.0 · January 31st, 2007, 06:28 PM

Originally Posted by 5literJeff

If a B303 isnt a good cam then what do you recommend?

Cam choices vary from car to car. It all depends on the combination.

1slo5.0 · January 31st, 2007, 06:29 PM

Originally Posted by 92_LX_5.0

if the piston does not clear the valves, how do you fix the problem??

A pistons notching tool.

January 30th, 2007, 10:13 PM	#1
92_LX_5.0 Newbie Join Date: Jan 2007 Posts: 39	cylinder heads... i have a question...i am running a b303 cam. i am going to go with afr heads, my question was, how can i be sure that i will have piston to valve clearance....i mean, before i buy the heads, where can i find if the cam will allow me to use the heads?

January 30th, 2007, 10:18 PM	#2
1slo5.0 Zippee is my step sister. 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 10,353	You need to check valve to piston clearance with the new heads and the cam you will be using. Every engine is different due to machining tolerances and other variables. Two identical engines with the same heads and cam can (and probably will) have two different measurements for valve to piston clearance. I also wouldn't use a B303 cam. If you are going to spend the money on good heads, spend the money on a good cam. __________________ Thanks to: Trick Flow, Team Z Motorsports, Total Engine Airflow and Furo Racecraft My daily driver has 16 cylinders and 4400hp @ 1000 rpm....

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January 30th, 2007, 10:37 PM	#3
5literJeff Regular Join Date: Jul 2006 Location: Blue Ridge, South Carolina Posts: 260	If a B303 isnt a good cam then what do you recommend?

January 30th, 2007, 10:41 PM	#4
92_LX_5.0 Newbie Join Date: Jan 2007 Posts: 39	if the piston does not clear the valves, how do you fix the problem??

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