4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Can I use my driver side NPI valve cover on my PI motor driver side?

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Old 11-10-2009, 12:17 PM
  #11  
lizzyfan
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NPI valve covers will fit PI heads but the covers have to be on the corresponding sides
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Old 11-10-2009, 12:19 PM
  #12  
Sxynerd
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OP you're confusing. Are you saying you have two Driver side NPI cam covers?


Originally Posted by sainthk
No you can not use your NPI valve cover on the PI head.
Yes you can

Originally Posted by nascrchi
the opposite side. I was thinking right off the bat no, because the NPIs' have smaller heads and the PIs' bigger and the valve covers would be diff sizes.
The valves are on the bottom so they don't affect it at all.

Originally Posted by 99BlackPonyGT
the heads are the same size


still wont work
All NPI's are Romeos and if he has an 04 Engine that is a Romeo as well so it will work.

Originally Posted by 99BlackPonyGT
triple...how do you break a valvecover?
IDK, the first PI engine I bought had a broken cam cover. It must have been the junk yard yanking it out of the bay.
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Old 11-10-2009, 12:49 PM
  #13  
nascrchi
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Originally Posted by 99BlackPonyGT
triple...how do you break a valvecover?




IDK, the first PI engine I bought had a broken cam cover. It must have been the junk yard yanking it out of the bay.[/QUOTE]


Right. They broke it while taking it out, but not out of the junk yard. check it out...
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Old 11-10-2009, 12:52 PM
  #14  
nascrchi
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Originally Posted by lizzyfan
NPI valve covers will fit PI heads but the covers have to be on the corresponding sides
gotcha! thanks.
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Old 11-10-2009, 05:56 PM
  #15  
sainthk
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Well sorry for the false info, But i was under the impression that they would not fit.

I could have swore you the NPI valve cover would not cross over the PI heads, But I stand corrected.

But when you do happen to put them on let us know for a defiant answer.
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Old 11-10-2009, 06:04 PM
  #16  
nascrchi
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Originally Posted by sainthk
Well sorry for the false info, But i was under the impression that they would not fit.

I could have swore you the NPI valve cover would not cross over the PI heads, But I stand corrected.

But when you do happen to put them on let us know for a defiant answer.
will do man. We're all wrong once in a while which is why we need these forums. Thanks anyway!
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