460 to 514 or bigger

[Tom Wells]

mdross1,

My E-M with the 521 just passed 30K street and track miles. The grin factor has been, and still is, enormous. Even with the C-6 auto and a 2.88 posi Jag rear, it is necessary to "roll on" the throttle at any speed. If you stomp it you can lose it in an instant, even with the wear rating 200 street tires. If you are on the track with Kumhos or similar slicks, you still need to be careful...

The engine has the newest Holley multiport EFI and a Crane hydraulic roller. I still think it's the most HP and torque available for the dollar, and if you pay attention to the oil system updates here (particularly the distributor gear mod): http://www.highflowdynamics.net you should have a very reliable engine as well.

I like it so much I built a 557 for my 1981 Zephyr wagon

That's my story...

Tom

PS: It took two D9 blocks to get a successful 4.440" (0.080 over) for the 557

[blykins]

It depends on what kind of personality you want the engine to have. Do you want to have a tremendous amount of torque, or do you want a higher revving engine? A stock stroke 460 can make almost 700hp at around 6600-6800 with a good set of heads and a roller cam.

[mdross1]

Originally Posted by blykins

It depends on what kind of personality you want the engine to have. Do you want to have a tremendous amount of torque, or do you want a higher revving engine? A stock stroke 460 can make almost 700hp at around 6600-6800 with a good set of heads and a roller cam.

Been seriously looking into this route Kaase P-51 heads and a decent solid roller.One of his .030 over 460's was making serious stump pulling torque and huge hp numbers.The motor in the car now is very low mileage under 5K.

Then there is the strokers using my current Ford Motorsport aluminum heads should also get me the same numbers and be able to use my Tubular Auto exhaust headers.
Still just thinking.

[blykins]

Depending on how high you go on displacement, the heads may not support it enough to make the real big horsepower...

[lvhdude]

Originally Posted by Tom Wells

mdross1,


The engine has the newest Holley multiport EFI

Is that the Terminator system? Did it work as advertised, without any special tuneing or dyno time? Are you useing the timing and fan control functions of the computer?