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-   -   5k rpm in a few seconds (https://67-72chevytrucks.com/vboard/showthread.php?t=484302)

ripdog28 09-13-2011 10:46 PM
5k rpm in a few seconds
 
No 1/4 or 1/8 time yet but per the gear calculator with 3.70 gears and a th400 it's 110mph at 5k. I hit 5k in 3rd from a dead stop in 9sec. This don't seem right unless my engine build put a bigger cam in it then he told me.
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Marv D 09-14-2011 02:08 PM
Re: 5k rpm in a few seconds
 
I don't think your allowing for that big block driving through that convertor about 2-3 thousand RPM are you LOL

djracer 09-14-2011 07:29 PM
Re: 5k rpm in a few seconds
 
I think Marv may be on to something. What do you have for a convertor?

ripdog28 09-15-2011 04:47 PM
Re: 5k rpm in a few seconds
 
3500 Dalenzie...

djracer 09-15-2011 10:25 PM
Re: 5k rpm in a few seconds
 
I'm not familiar with that brand. Is the truck extremely traction limited?

ripdog28 09-20-2011 04:15 PM
Re: 5k rpm in a few seconds
 
They are a local company with a good reputation. It spins a lot down low, if I hammer it from a dead stop then it'll spin for the first 70-100 yards. If I take it light for the first 25 yards it don't spin bad. I do need to soften up the rear end. It has MT drag radials.
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