View Full Version : 440 Compresion
nickt5174
06-26-2002, 07:20 PM
If I get a 440 kit with 11:1 compresion on a bone stock 400ex would I be able to run pump gas or would I have to run race gas?
440exnacsracer
06-26-2002, 09:12 PM
premium gas would be OK, but off-road high octane fuel or race fuel would be better. at some stations ive been to, they actually sold off road gasoline with110 octane... run at least 93 octane
oynot400
06-27-2002, 10:11 AM
From what I have been told, 11:1 is the limit for pump gas. However, when you start getting to that limit you may run into some pre-ignition. You will just have to run it to see what it does. If anything you can run a 50/50 mix race gas and pump gas.
papaw
06-27-2002, 03:42 PM
check out "have you decked the cylinder"post's,you might find it pretty interesting about 440 compression ratio's.......
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