6500rpm stall converter tooo loose?
the motor is a 706 CI big block Chevy. The trans is a Powerglide. It makes maximum horsepower at 7000 rpm and maximum torque at 5600rpm. I think most people would recommend a 5600 rpm stall converter.the last car I had had a similar motor hp range, similar converter and I tightend the converter to 5500stall and it did not speed up the car or drop the et at all. So what are your thoughts would make any difference to change it?
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Need to know more about what car its in, weight, trans, rear gear and tire ? and what type of racing do you do?
6500 is pretty standard now days, most are even higher. |
[quote="hammertime"]Need to know more about what car its in, weight, trans, rear gear and tire ? and what type of racing do you do?
is 6500 pretty standard with a peak horsepower @seven thousand Rpm? How interesting. the car Iis a Top Sportsman 63 split window tube chassis vet made by Spitzer in 1995, tires are 32 inch paddle tires for sand drags..I am guessing the car weighs about 2600 pounds without me in it I am a hundred sixty pounds.powerglide has standard gears,the rear gear ratio is 410. I really appreciate the help. I only get to run this car a few times a year and it is not enough time to iron it out by just test and tune.I shift at one and a half seconds which is usually about 6,900 rpm and I finish the 100 yards at 6500 rpm.I am happy with the ET which is 3.6,s but I want to understand the car better.I am assuming that because it is not finishing at a higher rpm that I am wasting some power through the converter ,perhaps could use some lower gearing, but wanted some information from someone with more experience than I have |
Knowing it needs to accelerate quicker for a short distance, 5500 is to tight, but 6500 is on the loose side. 6100-6200 would be a perfect middle ground. A 8" converter would also accelerate and be the quickest in a situation like this.
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[quote="happyfast"]
Originally Posted by hammertime
Need to know more about what car its in, weight, trans, rear gear and tire ? and what type of racing do you do?
is 6500 pretty standard with a peak horsepower @seven thousand Rpm? How interesting. the car Iis a Top Sportsman 63 split window tube chassis vet made by Spitzer in 1995, tires are 32 inch paddle tires for sand drags..I am guessing the car weighs about 2600 pounds without me in it I am a hundred sixty pounds.powerglide has standard gears,the rear gear ratio is 410. I really appreciate the help. I only get to run this car a few times a year and it is not enough time to iron it out by just test and tune.I shift at one and a half seconds which is usually about 6,900 rpm and I finish the 100 yards at 6500 rpm.I am happy with the ET which is 3.6,s but I want to understand the car better.I am assuming that because it is not finishing at a higher rpm that I am wasting some power through the converter ,perhaps could use some lower gearing, but wanted some information from someone with more experience than I have BTW You would be a good bit faster by not shifting at all. I run a glide that has 2nd gear taken out completely. I run low gear all the way, but you can't be scared to turn the motor hard. 8,200 to 8,400 is my normal rpm max with 2 kits on. On motor I use to turn 7,600 - 7800. |
thank you for the response everybody, rabbit that truck is awesome
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Originally Posted by happyfast
thank you for the response everybody, rabbit that truck is awesome
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Happyfast
What converter did you end up putting in your car? Stall wise that is? Who's converter? What was the converter efficiency in percentage? I am doing something people do not do. I have a 632 in a 2500 lbs with driver car. I run a 1.98 planetary, and short shift a tight converter. Greatly improved my 60 ft's and MPH-ed like a bitch. JT |
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