FE ONLY OR 514ci. CRATE IN YOUR,....COBRA ?

[cycleguy55]

Originally Posted by FUNFER2

It's amazing that it is a 60 over and 4.375 bore. That's huge. lol

So, with a proper sized hydro or mechanical cam, intake and good heads on E85, what's your guess on HP/TQ, torque curve & RPM range ?

Here's one example from Brent's site ( Lykins Motorsports, LLC ): 445 ci FE, 525 hp @ 5500, 588 lb-ft @ 4200. 4.080 x 4.250, Scat 9000 series crankshaft, Scat I-beam rods, Racetec pistons, 10:1. Comp Cams custom hydraulic roller cam, 235/241 @ .050", 110 LSA, .610" lift. Survival Motorsports as cast cylinder heads, Performer RPM intake, Quick Fuel HR-750 carb. Stuska dyno.

Above is 4.080" bore vs 4.060", and stroke is 4.250" vs 4.375". So, slightly smaller bore and 1/8" longer stroke, making it slightly bigger at 453 CID vs 445 CID. All things being equal, it should produce similar HP and torque.

Camshaft selection will be important, and I'd recommend taking Brent's advice on that.