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GTS340 · 08-23-2023, 02:39 PM

One of the toughest part of the engine build, besides parts. Was fitting the camshaft. The 5.7 Street Hemi is the only Gen III that has no valve relief. Flat top (very slight dome).
Also ran into a cylinder head number pause. I have the original Challenger heads numbered 53021616DD. The excepted number is 53021616DE. I researched it of course. Basically the DE is the Drag Pak Head used. The DE head came on Aspens and durangos. The difference is one head has some boss drilled for a EGR bracket. Honestly I didn't think it would take me so long. I called Pat on it and was told it might take 6-8 months to get the number added. I bought new cores. Doubt anyone is planning this build but you never know.

Paul

08-23-2023, 02:39 PM	#27
GTS340 Senior Member Join Date: Feb 2017 Location: Las Vegas, Nv Posts: 749 Likes: 188 Liked 1,075 Times in 336 Posts	Re: 4 speed set up in a 2013 Challenger One of the toughest part of the engine build, besides parts. Was fitting the camshaft. The 5.7 Street Hemi is the only Gen III that has no valve relief. Flat top (very slight dome). Also ran into a cylinder head number pause. I have the original Challenger heads numbered 53021616DD. The excepted number is 53021616DE. I researched it of course. Basically the DE is the Drag Pak Head used. The DE head came on Aspens and durangos. The difference is one head has some boss drilled for a EGR bracket. Honestly I didn't think it would take me so long. I called Pat on it and was told it might take 6-8 months to get the number added. I bought new cores. Doubt anyone is planning this build but you never know. Paul Attached Thumbnails