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Old 05-24-2008, 07:02 PM
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400 mouse motor

OK I have received a lot of great info. and I have concluded not to take the motor apart but I want more power so can I do this and have nothing else too do?
Remove the factory 400 sbc cam and install a GM 350/350 Cam, put true duals and a new intake and carb also would like to replace the factory points dist. with a new electronic ignition.

So what cam? what type of exhaust? Intake and carb?


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Old 05-25-2008, 12:03 AM
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"can I do this and have nothing else too do?"

No. This is a '73 motor. It is one of the lowest compression small blocks Chevy ever built. If you think the motor is slow now, just install more cam without a static compression ratio change and you'll find out pretty quickly what slow really is.
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Old 05-25-2008, 12:21 AM
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But Man will that C/R pick up with a set of 64cc Heads . Yes you have a Power House waiting to be built .
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Old 05-25-2008, 02:16 PM
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if its in good shape now then go ahead and do it.down the road if you don't like then you'll have the parts and can wait to do more on yuor own time schedule but i think you will realize want you are looking for.call a good cam company one of your choosing and give them your info and they will help pick a cam.you may think about bigger rockers also which make it seem like you have a bigger cam to go along with the cam.it makes the helps the valves open sooner and stay open longer.a .450" lift cam with 1.6 rockers will make it .480".something like a comp cam magnum 470 would be good but call comp or crane or someone.the rockers don't have to be rollers.

Last edited by GoneNova/406; 05-25-2008 at 02:38 PM.
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