Quote:
Originally Posted by 67ramair4
First off this isn't bashing the thread originator; but more of a question? 117 MPH is freakin impressive!!
But, why do you run 3.08 gears in a drag car? What ever happened to 3.90's or a 4.33 gear?
What kind of horsepower does it take to go 117 MPH and doesn't the (high) gear kill your launches and abuse your drivetrain immensely???
If I missed it in the thread apologies are in order!!
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Its a street car that gets driven 100 miles to the track,can easily cruise 60 to 80 mph,drives like a stock 301 around town,idles at 850 rpm.The story behind the 3.08's is my old car had 3.08's once I switched to 3.42's didn't really pick up much..little harder to hook up,when I bought this car I left the 3.08's in for highway cruising..and to see what it could do...
As far as the high gear killing the launch..yes initially it did about a half a tenth..now this car is a tad quicker in the 60ft with a bit of tuning,the convertor actually flashes slightly higher with the 3.08 gear out of the hole just using 3 way adjustable shocks
As far as abuse..my nearly stock drivetrain holds up well,now imagine a 3.73 gear 4200 stall,The engine would destroy everything behind the convertor..plus I would need a rollbar more traction aids
This car and the previous car have always been street cars first..while tuning for both clean comfortable driving and gradually dropping et
Two guys have been big influences on me..Jim Hand as far as his thinking on tuning a combination to the max...and Darby Otto's(Grandville 455) track tuning with his big old car through the years...I still have much to learn..but I'm going to see how far I can take this engine convertor and rearend combo.