A
Anonymous
Guest
Hi i have an XD falcon 250 Crossflow, its been worked, 30 thou over pistons its stroken out to close to a 270, 3.3 rods compression is 10.5:1. I started off with a 600 holley. that was way too big i was getting flat spots getting bogged down low.. and lots of pre ignition, it would turn off sometimes. The block was deck to 0.
I then put on a 450 holley, i have had better economy and performance out of it but still down low it boggs, but i think thats cause of my gear ratios 2.92, im going to go to 3.5s.
Anysways i still have pre ignition, the motor has been on a gas analyser its been tuned properly what can i do to stop this??? Can anyone help me?
I then put on a 450 holley, i have had better economy and performance out of it but still down low it boggs, but i think thats cause of my gear ratios 2.92, im going to go to 3.5s.
Anysways i still have pre ignition, the motor has been on a gas analyser its been tuned properly what can i do to stop this??? Can anyone help me?