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Discussion Starter · #1 ·
I just recently purchased a 402 and i am building it back to specs the only difference is it is bored thrity over with headers. But I was wondering about the amount of hp it produced from the factory. I have heard that these motors were under rated so does anyone know exactly the hp rating and what my hp rating would be with headers, probably hooker headers.
 

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HI,there was 3 402's (396)for 70.the LS3 was 330HP ,The L34 was 350HP ,AND the L78 was 375HP.The LS3 was not avalible in the SS cars.


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Ray Griffin
70 LS6

[This message has been edited by 70RPOLS6 (edited 04-28-2001).]
 
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