02-23-2021, 10:54 PM
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#2
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Live Reporter
Join Date: May 2006
Location: Dripping Springs, Tx
Posts: 2,709
Likes: 186
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Re: SS/CS Start line Ratios
Quote:
Originally Posted by SuperStock172
Hi,
Aussie Super stock question, where our class rules are closely in line with NHRA SS/CS, hence the title. We run a Proflite 3 speed behind a max effort, small cube, high rpm OEM iron headed wedge motor. Converter stall at just a bit over 8000rpm. Car weight is approx 3300lbs. After a reasonable break from racing we decided to change our first gear ratio, we're currently at 2.51 with a 6.0 rear gear, the car seems to launch harder with this gear but as a result the gear shifts are happening sooner and the run home in top gear (1/4 mile) is stretched, which seems to not be helping the e.t at the stripe. Unfortunately, the original ratios in the box were misplaced, but we're lead to believe they were around a 2.2 first. Hoping to pick a few a brains on which direction we should head with our ratio and if we should be aiming to head back to a numerically lower ratio? Thanks in advance for the help.
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You need to talk to Ashton Hudson. He had the fastest CS car before he switched to comp. I’ll tell him about your question.
-Ed
__________________
Ed Carpenter
2005 Chevy Cobalt A/SM
Race Engine Development
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