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I came across a set of heads with PN# of p4150021 what the heck are these??.. They look like PN#p5007428 (p7 heads) in the Mopar Performance catalog.

Jim Power,
Fontana, CA


Unfortunately that number doesn't seem to come up in any of my listings or with any of my sources. Is there any way you can take some pix and send them to me so I can dig a little further? Maybe a shot of the combustion chamber, one of the rocker arm area, and intake and exhaust port photos.


If you’re stuck on a tough Mopar performance or restoration problem we have someone who may be able to help with fresh information and resources about classic Dodge and Plymouth parts. Matt Deane has been involved with Mopars all his life and is the Mopar Performance Parts specialist at SoCal’s Glendora Dodge. Now he’s offering his wealth of knowledge to Mopar Max readers and will track down the answers to your tough questions. Just fill out the form below and we’ll include his answers every month right here in Mopar Max. 

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