RWHP loss when switching to a 9"????????

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Jan 18, 2007 | 02:50 PM

1fastz28nx

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RWHP loss when switching to a 9"????????

I want to know much RWHP is lost when switching from a 10 bolt to a 9". I'm not looking for everyone's opinions, I want someone that has dynoed their car with a 10 bolt and then dynoed it again with the 9" and NO OTHER CHANGES. Seems like everyone I know that switches to a big rear end and then gets it dynoed has done other mods, so it's a guessing game with no solid proof.

Just want to see some numbers.....

Jan 18, 2007 | 03:11 PM

STL2SLO

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From: Brandon, MS

I have no dyno numbers.. But I picked up 3 tenths at the track switching from the stock 3.42s to a 4.56 Moser 9".

Jan 19, 2007 | 10:16 AM

Justin01SS

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There was a thread here that someone did that exact test. May try searching for it. It was roughly 10 horse i think but dont quote me

Jan 19, 2007 | 12:25 PM

ls1muscle

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Here you go https://ls1tech.com/forums/dynamometer-results-comparisons/521241-moser-9-power-loss-details.html

Jan 19, 2007 | 01:12 PM

junior28570

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Quote:

Originally Posted by ls1muscle

Here you go https://ls1tech.com/forums/showthread.php?t=521241

The loss in dyno numbers there looks to be more to do with the gear swap. I have seen dyno results that verify that gear swaps to lower gears will net lower dyno numbers. However, that graph doesn't isolate the 9" as an assembly. It would take a gear for gear, axle assembly ONLY swap.