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lookin to debut new car at nmca michigan race, its a 66 el camino with 525. motor made 1160. Currently running 400 three speed with 4.11 rear gear 29.5 inch tire. Gonna change trans to pg to run lighter, which gear in rear?:confused: may need 4.88 to get me @ 8200rpm?
 

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Maybe I'm missing the issue. I switched to glide from a 400, & high gear is still 1-1, same RPM=same MPH.

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Sounds like a new combo, guys. He's telling you what he has avaliable..and now he's adding 1160hp to it with a glide(3200lbs?). Wants to spin it to 8200 I guess? 29.5 tire...I haven't a clue, myself.:)
 

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Well... most if not all of the BBC in the NMCA Pro Stock class spin their motors to 9200-9400 thru the lights so I would look at getting a 5.13-5.21 rear gear depending on how efficient your converter is. 1160 hp at 3425 should be real fast.
 
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