Got To Love the New COPO 427/450 Engine Specs!
 

It seems they are ready to battle the new Ford 429 engine!

Compression: 14.9
Lift: 0.676"
Throttle Bore: 4 @ 2.250” 4B-4500 (Dominator size)
Valves: 2280(I)/1620(E)
Dual Coil Springs
Heads: 12 Degree LSX/LS7
https://sdparts.com/details/gm-perfo...parts/19201806

Re: Got To Love the New COPO 427/450 Engine Specs!
 

The head is the LSX DR not the LSX LS7.

Re: Got To Love the New COPO 427/450 Engine Specs!
 

Then it should even make more power.
The DR version is an 11 degree head and it can flow close to 430 CFM.

http://www.competitionplus.com/drag-...all-bore-heads

Re: Got To Love the New COPO 427/450 Engine Specs!
 

Didn't that engine get canned a while back? Don't think that many cubic inches fits FS/B anyway, unless they changed the rules yet again.

Re: Got To Love the New COPO 427/450 Engine Specs!
 

COPO's now have two 427 motors.

One is a factory Shootout engine (above Specs) and the other is offered with the cars. I believe it's like the Challenger Track pack 426 motor not something you can buy with the car.

Re: Got To Love the New COPO 427/450 Engine Specs!
 

Ah I saw the 450 and immediately thought of the 450 inch one from before.

Re: Got To Love the New COPO 427/450 Engine Specs!
 

Unless I missed it, I don't see the LSX-DR head port volumes listed.