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08-15-2021, 12:51 PM | #11 |
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Re: starting line gear ratio?
How does engine cubic inch and an engine's ability to RPM factor into the SLR?
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08-15-2021, 11:23 PM | #12 |
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Re: starting line gear ratio?
I caught a little NHRA Stock qualifying highlights today from Topeka. I don't know much about this class really as far how elaborate the engines are allowed to be, or how much they have to weigh, but this car runs about like my n/a 23 degree sbc on 10" tire 69Nova.
What SLR do these class cars typically run? What transmission and how many rpm's do they typically cross? It was a current model Camaro, is it limited to an LS? I think the announcer said 409cid. Just curious, run pretty good seemed like. Last edited by Mike Rietow; 08-15-2021 at 11:31 PM. |
08-15-2021, 11:56 PM | #13 | |
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Re: starting line gear ratio?
Quote:
A better comparison with a traditional production-based Stock Eliminator race car, might be a '99-'02 LS 346 V8 Camaro A/SA car. The current national record in A/SA is 9.65 at 136.3 mph. A car like that would have a stock throttle body, stock intake manifold, stock heads with an NHRA-legal valve job, stock bore (plus up to .040"), stock stroke, stock compression ratio pistons, stock valve lift, stock rocker arm ratio, and so on, with a "metric" TH200 3-speed automatic transmission with no trans brake, an 8" converter, and 9x30" tubeless radial slicks. Last edited by 6130; 08-16-2021 at 12:26 AM. |
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08-16-2021, 12:40 AM | #14 |
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Re: starting line gear ratio?
here's a more detailed chart borrowed from Cale Aransons Black Magic clutch website ..........lots of useful information there.
http://www.blackmagicclutches.com/index.html
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Steve Stickel 1161 Stk 1167 SS |
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08-16-2021, 01:07 AM | #15 | |
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Re: starting line gear ratio?
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I gotta find a way to watch/follow these cars more |
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08-17-2021, 05:49 PM | #16 |
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Re: starting line gear ratio?
Rod: 350HP and 3600LB = 12.20 should be attainable.
Our Aspen Wagon NOP Stocker with 318 that put out actual 340 HP and weighed 3600 plus held the record @ 12.0 over ten years ago.and ran 11.70 to 11.80 when needed. It is an Auto so not comparable on ratios but shows what can be done on that HP/Weight.2.75 Low and 5:13 gear at Sea Level. 14.11 ratio and I think that stick would need a bunch more without a torque converter. 9.0x30 Radials (92.5 Cir.)
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John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 08-18-2021 at 01:44 PM. |
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08-17-2021, 06:39 PM | #17 |
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Re: starting line gear ratio?
While HP and weight are very important you cannot leave out tire size when talking about SLR.
Stan Last edited by Stan Weiss; 08-17-2021 at 08:02 PM. |
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08-24-2021, 12:20 AM | #18 |
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Re: starting line gear ratio?
Stan,
I think I said" If traction is unlimited" or did I say available... ??
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08-24-2021, 04:51 PM | #19 |
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Re: starting line gear ratio?
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08-24-2021, 09:56 PM | #20 | |
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Re: starting line gear ratio?
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