??? ABOUT RING & PINION SIZE
#1
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DYNO OPERATOR
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Join Date: Apr 2008
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??? ABOUT RING & PINION SIZE
HOW DO I FIGURE OUT WHAT SIZE RING & PINION I NEED.CAR WEIGH'S 3485 WITH ME IN IT. IM EXPECTING 7000 RPM AT THE END OF THE 1/4 MILE,TURBO 350 TRANS AND PROBALLY 4500 STALL.RICHMOND SAID 4.10,MOSER,STRANGE AND RANDY'S RING & PINION SAID 4.56,IM CONFUSED.I WOULD HATE TO PUT IN ONE GEAR AND FIND OUT I NEED ANOTHER.
#8
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Join Date: Apr 2008
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great afr said the head and cam package i bought from them was good to shift at 71-7200 rpm.I was thinking 4.56 which is all i can find for my 8.5 10 bolt,where could I purchase a 4.30 ring and pinion?
#9
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Originally Posted by dparker
A 4:56 at 7000 rpm and 27" tire would be 123.36 MPH. I think a 4:56 gear is what I'd run with your combo.
#10
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RACING JUNKIE
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
He's running a 4500 stall so the slipage will be minimal. I think the growth of the tire will off set the slipage of the convertor. I'm using a dragmath program thats been very close on actual numbers for me. A 27 in tire actually has 84.82 roll out.