starting line gear ratio?

[6130]

Originally Posted by Mike Rietow

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.

An FS/C car is not a traditional Stock Eliminator race car, it's a factory race car with no VIN. The factory race cars come with Ford 9" rear ends and engine combinations that may not be available in regular production-based cars.

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.

[Steve Stickel]

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

[Mike Rietow]

Originally Posted by 6130

An FS/C car is not a traditional Stock Eliminator race car, it's a factory race car with no VIN. The factory race cars come with Ford 9" rear ends and engine combinations that may not be available in regular production-based cars.

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.

Very cool, thanks

I gotta find a way to watch/follow these cars more

[GTX JOHN]

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.)

[Stan Weiss]

While HP and weight are very important you cannot leave out tire size when talking about SLR.


Stan

[Adger Smith]

Stan,
I think I said" If traction is unlimited" or did I say available... ??

[Stan Weiss]

Originally Posted by Adger Smith

Stan,
I think I said" If traction is unlimited" or did I say available... ??

Adger,
Size was to general a word to have used, I should have said Diameter.


Stan

[GUMP]

Originally Posted by 6130

An FS/C car is not a traditional Stock Eliminator race car, it's a factory race car with no VIN. The factory race cars come with Ford 9" rear ends and engine combinations that may not be available in regular production-based cars.

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.

You get my vote for "Clueless Post Of The Year".....

[rod]

guys, thanks for the input. the charts are very neat. very possibly the Dick Miller 11.25 # was with a torque converter [didnt say in the book] and when you ad in torque multiplication, it changes everything.
with mine,as is, at 13.69, its high from Miller and low for both the 2 charts. however, I will rather be under geared than over reved at the stripe. plus I could just gain more MPH if the engine will continue to pull.

have to wait till Thanksgiving to run at Vegas [that just sucks-every track in the country is runnin' except Vegas]
Thanks again, all.
Rod in AZ

[68/ss]

Need Help,2350# 15x33 tire,6.20 rear gear. going stick racing with G-Force 2000,Ram billet Clutch as reccomended by Mike @ Ram. tranmission is coming from G-Force with 3.167 1st,2.148 2nd,1.576 3rd1.250 4th 1.000 5th according to my calculation SLR of 19.63 ,engine makes 850@8750 and peak torque 595@6500 is this too much SLR ?