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Tim H · 09-11-2020, 02:10 PM

Factory rated 454/365hp was definitely an oval port head. If this is a legal stock engine the cam profile and associated hardware typically dictates that shift rpm will be significantly higher than a "basic" 454. Numerous factors to consider as with any engine but generally I can say 6500 -6700 would not surprise me.

09-11-2020, 02:10 PM	#2
Tim H VIP Member Join Date: Jan 2007 Posts: 1,041 Likes: 1,071 Liked 481 Times in 158 Posts	Re: 454/365 rpm Factory rated 454/365hp was definitely an oval port head. If this is a legal stock engine the cam profile and associated hardware typically dictates that shift rpm will be significantly higher than a "basic" 454. Numerous factors to consider as with any engine but generally I can say 6500 -6700 would not surprise me.