Indiana Open Wheel - USAC Historical Question

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Seadog

10/14/10 8:27 AM

USAC Historical Question

What was the first year that USAC allowed 410 engines to compete in the sprint cars? Did they go from 305 to 410 in one year or...? Anybody know?

#1jackhewittfan

10/14/10 8:42 AM

i dont have specifics but i believe they went to 358 in 80 or 81 and 410 3 or 4 years later.
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Seadog

10/14/10 8:50 AM

Re: USAC Historical Question

Quote:

Originally Posted by #1jackhewittfan (Post 199510)

i dont have specifics but i believe they went to 358 in 80 or 81 and 410 3 or 4 years later.
Posted via Mobile Device

Thanks for that. Do you know when they started to allow aluminum blocks? Or did they do that when they went to 410?

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