i see mancini and others offering a 440 based 540 cid kit.$1995.00 using a 4.500 crank...whats your thoughts on a street strip engine,being ran in a heave car4000-4200#,and eddy heads ported[[not victors]].what would be the amount of block grinding? how would the long rod,big arm,small bore engine run,compaired to a 440/500"...any ideas would be great. .....thanks,mike

That's a lot of stroke for a stock block with 2 bolt main caps. Unless you ran killer heads, it wouldn't make much more power than a 4.125 or 4.25 stroke engine... just more torque at lower RPM which would strain the drivetrain more.

Friend has that combo in a 2900# car runs 9.50 no issues,
He is going with a set of victor jr full cnc ported heads bigger cam see what it can run this year
engine builder,girdle,crete, getting right combo of gears tires run long time

You can expect a good, low rpm grunt motor, as I am sure you know. The extra torque down low will definitely be a good thing for such a heavy car. The 540 could run its best shifting as low as 5800 to 6,200 rpm with those heads. That makes it an easy life for the valvetrain. You will also be able to run less bob weight, due to a shorter piston/longrod/long stroke combo. I have run a small port 535 with a tunnelram, shifting it below 6,000. Block grinding for clearance won't be a big deal, just notch the cylinders for rod clearance. You just can't beat a stroker for dual purpose use. The converter will be tight enough for the street, you can run a 3.55 gear and still fly at the track. If it were me, I wouldn't have it any other way!

I have been running that bore and stroke combo for several years but with B1 heads. The stock blocks don't like the horse power I made but should work if use a girdle and don't push it too hard.

That kind of size needs some cylinder heads.. for the money B1's or 440-01, Roller Cam at least 12:1 Compression. easy 700-800 HP

I really don't think any Eddy head would do that engine justice,
but that's just me.

I just saw that on their website. It is tempting.

If your heads are CNC'd then you will really like the
torque... be real here... how often would this hit
the track... I'm thinking this is 97% street... if so
you will love the torque and low rpm on the street...
plus the torque will increase your stall speed some

I used a 7.1 rod and filled the block to the bottom of the water pump ports. It made about 880hp and lived 300 passes before splitting #3&4 cylinder walls and the main webbing.

I had the same problem with the 4.5 stroke. Even with the stud girdle it pulled the mains out. Having said that it did run 9.40 with stage six heads at 2900 pounds for a few weeks.