Engine/car is at race shop where its getting sorted to handle the motor, will pass info on to my mate and try and get more info on it, 4560x4.500=587.92ci, ..4.500x4.625= 588.45, it was actually sold as a 589
I did some research and found this>
CAST IRON BIG BLOCKS (Mega Block)
ā¢ Brand-new castings made from high nickel alloy cast iron
ā¢ Thicker deck surface for improved rigidity and gasket sealing
ā¢ Ductile iron main caps which are cross-bolted on the 3 center caps on all the Siamese 440 blocks
ā¢ Stock 10.72" deck height
A. Cast Iron Siamese-Bore Blocks
These blocks can be bored to the stock size of 4.25", but are speciļ¬cally designed to be bored larger. Mopar recommends that you sonic check each block if you approach or exceed the 4.50" bore diameters.
*P5007625AB 440 Big Block Cast Iron Siamese Cross-Bolt Block- Rough Bored at 4.50"
*P5007626AB 440 Big Block Cast Iron Siamese Cross-Bolt Block- Raised Cam, Rough Bored at 4.498"
*P5007624AB 440 Big Block Cast Iron Siamese Cross-Bolt Block- Rough Bored at 4.19"
Note: P5007626AB Requires special UGL cam P5007714, special oil pickup, and intermediate shaft modiļ¬cations. Higher cam location allows (0.250" higher) longer stroke for more cubic inch displacement up to 4.50" stroke. Some clearancing of the pan rail and other areas will be required.
Cast Iron Wedge Blocks
Wedge Blocks feature factory-size bores, water ļ¬ow between the cylinders (not siamesed) for improved cooling and sealing durability. These blocks are fully water-jacketed.
*P5007671AB 426 Max Wedge Cast Iron Block- 2-Bolt Mains, Finish Bored at 4.25"
*P5007815AB NEW! 440 Wedge Cast Iron Block- 2- Bolt Mains, Finish Bored at 4.32"
So we'll see what he has for crank/compression currently and take it from there. @the current hp level it will do what he wanted and that was to run a min of 10.5 and drive on the street, he didn't want an all out high CR race motor.
Last edited by rb446; 11/09/19 10:27 PM.
