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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 05-25-2009, 08:51 AM   #1
jetblack88
 
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Default roller cam??? will an x303 cam fit

ok i have a stock 92 w 5.0 will i have to change pistons to fit this ford racing cam p# M-6250-X303 it says you may have to add clearance to valve reliefs in pistons if thats the case then ill go with new pistons or a different cam
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Old 05-25-2009, 08:54 AM   #2
Joel5.0
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Not usually, but you always need to check. You do need to change/upgrade valve springs, retainers, determine correct pushrods length, etc. What heads are you using?
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Old 05-25-2009, 09:08 AM   #3
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e7 heads i got new valve springs & all that i just didn't know if i wanted to tear into the bottom end
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Old 05-25-2009, 09:57 AM   #4
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Your gonna have to check the PTV cleareance, and if you got stock valve springs, you need to sell those and get some stronger ones. The e7's springs are barely rated to .500 lift. Get your self some comp cams springs or trickflows. But be careful with the trickflows.
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Old 05-25-2009, 10:29 AM   #5
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i just wanted to know if any body has done this before without having to change piston or clearance them
i don't really want to tear into the bottom end
I already know i gotta use new valve springs
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Old 05-25-2009, 10:40 AM   #6
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i know the f cam fits right in and i believe the the x cam will fit by about .002
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Old 05-25-2009, 10:46 AM   #7
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I've seen this swap done at least 50 times with No fitment issues.


Thought it read E cam. Couldn't tell you on the X cam
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Old 05-25-2009, 10:51 AM   #8
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thanks...ill probly go with that cam then
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Old 05-25-2009, 12:10 PM   #9
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Ford Racing letter cams = fail
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Old 05-25-2009, 12:14 PM   #10
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Quote:
Originally Posted by AdderMk2 View Post
Ford Racing letter cams = fail
Ill second that one.
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Old 05-25-2009, 12:14 PM
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303, 351, 50, cam, camshaft, clearance, company, ford, make, mustang, pistons, racing, roller, stock, valve, x303

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