I just caught rhe part about pumpgas. Seriously, you need cubes and airflow for that . What parts do you have to throw at a 4.5 bore aluminum block? Maybe $ 6600 to get one in hand (BME) , ready to assemble, and750 to 800 pumpgas hp will be a whole lot easier to do. The block should turn out to be a one time investment, and 100 pounds off the nose is huge . How much would it cost to replace two broken stockblocks? A lot more than just blocks and machine work.
Mega Block 589 cubes 4.565 bore x 4.500, just 10:1cr, 5/64 ring pack pistons, tiny Herbert street s/roller, .625/.625" 260/270@.050, 572-13 365cnc heads, 440-2, old 950hp carb, =695 dyno hp@5500-5900, how hard to get another 100hp from that spec upping the CR etc.,and still keeping it pump..... it has gone 10.3@130 with a 727 with a street converter in a 3800lbs RR in full street trim on a 10x29" Hoosier tyre on a no wind day at Santa Pod. Take 850lbs out of the car and it would go>
60 Foot E.T. : 1.31 Seconds
1/8 Mile E.T. : 5.95 Seconds
1/8 Mile Trap Speed : 114.22 MPH
1/4 Mile E.T. : 9.43 Seconds
1/4 Mile Trap Speed : 142 MPH
Just an example.
