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2018 5.0 Stock dyno pull 3.31 gear

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Old 03-03-2018, 07:02 PM
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Am I in the twilight zone??? What about 6th???
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isthatahemi (03-04-2018)
Old 03-03-2018, 07:04 PM
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Originally Posted by isthatahemi

I still don't follow how 5th was an issue? or 6th?

When I do data logging, if I would be a bit choked if I missed the most useful (from a performance perspective (rpm range)
I think it was good enough.

I will be more concerned with the Whipple dyno.
Old 03-03-2018, 07:04 PM
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Originally Posted by engineermike
Am I in the twilight zone??? What about 6th???
lmao
Old 03-03-2018, 07:06 PM
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Originally Posted by Brand
When I ran my 2018 5.0 on the dyno we also ran in 5th rather than the in 7th, 1:1, because we were hitting the speed limiter. I have 3.73 and was at 346HP but at a higher RPM. When I get back from New England I plan to take it back to the same dyno before I install the Whipple to see what difference the exhaust and 5Star tune made. 5Star is not what I prefer but they are one of the first to come out with a tune for the 2018 that that’s what I have for now.
I'm interested to see what the exhaust does also.
Old 03-04-2018, 01:50 AM
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Originally Posted by engineermike
Am I in the twilight zone??? What about 6th???
6th gear is a 1.28:1 ratio 7th gear is 1.00:1 ratio?
Old 03-04-2018, 10:21 AM
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Originally Posted by engineermike
Am I in the twilight zone??? What about 6th???

6th gear would have hit the stock speed limiter at 4700 rpms. Even 5th should be hitting it around 5600 rpms...
Old 03-04-2018, 10:32 AM
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Well this isn't rocket science, use 4th lol.

I just don't get why people do loaded dyno runs and they modify, and sure enough, the overlay looks amazing. Whatever.
Old 03-04-2018, 10:38 AM
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I don't disagree. Sometimes i consider it worth doing a "stock" comparison without a speed limiter but the problem with doing a comparison in a 1:1 ratio is the wheelspeed in 7th gear is 186 mph lol. Not sure about you but i don't trust the driveshaft or the stock tires at over 140 mph, much less 186 lol.


5th gear without the limiter seems like the best bet, 127 mph wheelspeed @ 6500 rpms.

Last edited by w00t692; 03-04-2018 at 10:42 AM.
Old 03-04-2018, 10:42 AM
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Originally Posted by Mark Miller
6th gear is a 1.28:1 ratio 7th gear is 1.00:1 ratio?
What mph would that finish at 6000 redline in 6th?

( Whipple and lethal performance both recommended 5th as the gear to make the pulls in )
Old 03-04-2018, 10:43 AM
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Originally Posted by TX-Ripper
What mph would that finish at 6000 redline in 6th?

( Whipple and lethal performance both recommended 5th as the gear to make the pulls in )
6th @ 134 mph
7th @ 172 mph lol


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