Guess the weight of Rocks in my cars.

Snattlerake

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Actually did that to a point but the calculator numbers to input are in my head.
336 is a given to make the math work.
336 X gear ratio X MPH divided by tire diameter = RPM

So I was running at the track often and the math there put the torque converter slip at worst summer heat at 10%
So You must add 10% to the final number to get RPM If the RPM in the equation was 7000 then add another 700 for converter slippage.
Other than that the math was straight forward.
336 X 370 X 176 divided by 31" = 7058 Now tire growth at speed is a factor also.
I was running 31 tall Hoosiers on 8" rims at 150+ expect 5% to 10% growth.
Say 5% so add 1.5" to tire diameter. 6732 RPM then the 10% slippage = 7405 RPM I ran it to 7600 RPM and quit looking at the tachometer in high gear 1:1 ratio.
And looked up in the rear view mirror and seen my buddies headlights dip down from him letting off the throttle so I backed off also.
It pulled to 7600 in first gear and I went to shift and shifter was in a bind and did not go into second but I was not letting off as I was in front.
I kept pressure on the shifter and seen 7800 rpm and quit looking, it shifted and second gear did the same thing.
I quit looking at the tachometer at 7800 again and it finally shifted..I was thinking that tweaked Yamaha V-Max will pass me any second.
He topped out at 147 and I was 3 school bus lengths ahead and he said I was pulling away like he was sitting still.

That short block is in my 57 chevy and just the other day I let a friend drive it and he can't shift and it went to 7800 RPM.
It has seen 8500 2 times..Knock on hard wood that 350 is holding together.


:bowdown:

Sheesh! I have to unzip just to count to eleven!:bolt:
 

El Pablo

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He prob has the first geo metro on Dana 80s and whatever transaxle would match that would be (which he prob fabbed himself) . I think most interesting man in the world need a recount.
 

Catt57

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He prob has the first geo metro on Dana 80s and whatever transaxle would match that would be (which he prob fabbed himself) . I think most interesting man in the world need a recount.

Maybe we could give him the title "Most Interesting Redneck Mechanic in the World"?
 

swampratt

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On the drive home i was thinking of what springs would fit in the rear of that corolla.
I also thought maybe I could jack it up and wedge a 4x4 post in there somewhere to make it a solid read axle and have good tire clearance.
The clicking of the right rear wheel bearing got my mind off the 4x4 post though.
 

swampratt

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Those rocks look heavy but neither car got to the 1 ton range.
I was really hoping I had that much in the corolla though.

I will say the Geo Metro handled it better than the corolla.
No tire bottoming out and no exhaust dragging.

Could be the 3" lift I put on it though.
 
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