Tuning and ET ?

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Tuning and ET ?

Post  whitefield on May 7th 2017, 1:52 pm

Okay , I know I ask some random questions that have a lot of variations , but here goes?

On a 1/8 mile car with new engine and say a safe base tune , and runs mid 6s off the trailer.

What average ET should a person expect to gain with a vehicle running mid 6s when tuned to potential?

In other words the base timing is set low , carb jetting is unknown ,  launch rpm is is 1000 rpm off of converter stall speed , shift points are 800 to 1000 lower than cam specs recommended.

This is a grudge race car and so I am trying not to give to much info away.

Thanks
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Re: Tuning and ET ?

Post  BBFTorino on May 8th 2017, 1:04 am

With that kind of "conservativeness"....there is still a bunch of power left in it. If he's going mid 6's....say 6.50's - .40's...which equates to about a 10.00 flat to a 10.10 in the 1/4, I'd think that picking up close to 3/10th's is not out of the question when the tuning brings everything up to "full spec".

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Re: Tuning and ET ?

Post  dr's wife racing on May 8th 2017, 8:39 am

Depends a lot on that base tune and sweet spot of shift point and launch rpm. Mine is very forgiving on launch rpm. But it will lose almost 3 tenths on a 300 rpm drop on shift point because it gets out of converters range. Just hard to tell untill you turn it up and see what is in there
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Re: Tuning and ET ?

Post  whitefield on May 8th 2017, 5:45 pm

3/10ths is about all we are looking for ! Cool but we will take all we can get Twisted Evil !
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Re: Tuning and ET ?

Post  rmcomprandy on May 8th 2017, 7:49 pm

In the eighth mile ... 3 tenths is not much when you start at 8.50 seconds but, if you begin at 5.00 flat it is a whole lot.

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Re: Tuning and ET ?

Post  cool40 on May 9th 2017, 12:15 am

rmcomprandy wrote:In the eighth mile ... 3 tenths is not much when you start at 8.50 seconds but, if you begin at 5.00 flat it is a whole lot.
yes! Several thousand bucks! Laughing
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