Boost capacity

93cobra12

New Member
Nov 21, 2003
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Seatte, WA
I've heard its pretty dangerious to run more then 12 lb of boost with a 8.8 compressed motor? is this true? My combo which will be taking that 12lb of boost is :

331 / sportsman block /main girlde
srs light weight pistons set for 8.8 compression
185 AFR heads
v2-sq trim w/ power pipe ( stock pulley )

I really want to put more boost into her, do you guys think its safe too? what would be the most boost i should put into this motor?
 
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93cobra12 said:
I've heard its pretty dangerious to run more then 12 lb of boost with a 8.8 compressed motor? is this true? My combo which will be taking that 12lb of boost is :

331 / sportsman block /main girlde
srs light weight pistons set for 8.8 compression
185 AFR heads
v2-sq trim w/ power pipe ( stock pulley )

I really want to put more boost into her, do you guys think its safe too? what would be the most boost i should put into this motor?


i wouldnt really know, but i think milage on the motor is a big part of it. you should post that info too :)
 
You can run a lot more than 12psi with 8.8 to one. You can run 12 psi with 9 to 1 without problems. As mentioned before, make sure you got enough fuel for it and don't run too much timing, and you'll be fine. My new combo is 14psi with 9.7 to one.