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Junior SCH Member
Low rpm with sn92
HI, newbe here thanks for all the info. ya'll have posted througth the years. Wish I'd fond this form 5 years ago. Just going from stock 302 W/ 69w head and sn92 to 347 W/ track 1 brodix heads. Motor n/a made 440hp @ 6100 on 93 octane. Installed sn92 Made 519 @ 5900 w/5# boost. We've tooned out motor on a land & sea dyno so air fuel, timing all sorted out. Is this normal to lose peek rpm?
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Junior SCH Member
figure the sn92 is only good till 39k rpms. from everything I have researched anything after that is just blowing hot air. what size pulleys?
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Junior SCH Member
5.75 to 3.75 Had 3.25 before
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Junior SCH Member
So at 5900 rpm the sn is spinning at 39805rpm which is were its getting hot, are you running a cooler of any type?
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