454 SBF - Anyone tried it yet?

[bobcowan]

Originally Posted by Cashburn

JE 4.125" bore pistons and 4.250" stroke 4340 forged Eagle crankshaft...

"This engine produces 643 horsepower at 6100 RPM and 597 ft pounds of torque at 5200 rpm. Torque at 3500 is over 525 ft pounds"

A while back I talked with the folks at JE Pistons. You can buy off the shelf pistons with 4.125" bore for only a couple of strokes, and 4.250 was not one of them. On their web site, that still appears to be the case. When I talked with them, they said they could easily make them, but they don't generally stock them. So they had to be special order and custom made = expensive.

Same thing with the Eagle crank. They can do it, but it's a special order. That doesn't seem to affect the price any, though.

I'm not sure what rods you would need, a little shorter than normal, I would think. Eagle doesn't list a package >445 cubes; and that uses a 4.100" crank, and a 4.155 bore.

If you use a Dart block with max bore and stroke, you can get 468 cubes. But the engine is maxed out, the stroke is huge, and the price is even bigger. I thought about it for a while, but then decided not to do it for a variety of reasons - price being one of them.

Originally Posted by RodKnock

I thought when you stick a 428 FE crank in a 427 FE, you get 454ci. I wouldn't worry about nomenclature.

SBF = Small Block Ford