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#1
02-22-2005, 10:13 PM
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I've had this pontiac 400 in my firebird for a few years now, bought the block freshly built, haven't driven it much (still messing with other stuff) and it runs well. but when I listen to it idling, it has that "diesel sound". I used to worry about knock, ping, etc, but timing doesn't seem to change it, and like I said it runs good. It is around 10.5:1CR, but I always wondered why it sounded like that. any Ideas?
heres the specs: pontiac 400 (.030 over) forged pistons 230/240 112* LCA craneRAIV double roller chain cam set neutral edelbrock 750 cfm performer e-performer RPM hedman hedders delco hei w/ msd coil+msd 6a box run around 102 octane at least (mix 93 and 110 race 1:1, same on straight of either)
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hmmmm.... which car do I work on today? -answer: all of them, they all need something |
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