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17x11s on dyno runs????

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Old Feb 15, 2003 | 05:06 PM
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Default 17x11s on dyno runs????

how much of a difference would there be when doing dyno pulls with 17x11s w/ 315s vs stock 17 inch wheels???
is it that much of a difference??
my car is going to be used for testing a camshaft and would like to put up correct#s and i would like to know if it is a big difference so we get accurate #s <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Old Feb 15, 2003 | 07:10 PM
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Default Re: 17x11s on dyno runs????

My last dyno #'s were pulled on 11" rims with about 16 psi of air. I'm gonna have it redynoed with a ported TB, cutout and 30 psi next month. I dont really know if the wheels make that much of a difference.
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Old Feb 15, 2003 | 07:43 PM
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Default Re: 17x11s on dyno runs????

Ive only had my car dyno'd with the 17x11 315s so I couldnt say exactly how much of a difference it maks but it does make some difference. My guess would be a couple ponies.
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Old Feb 15, 2003 | 08:50 PM
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Default Re: 17x11s on dyno runs????

i actually think they are part of the reason my numbers were not what wanted

i forgot to consider the extra weight

ryan
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Old Feb 16, 2003 | 12:50 AM
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Default Re: 17x11s on dyno runs????

I had a chance to try the swap at a dyno day. It made a 6 rwhp difference.
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Old Feb 16, 2003 | 02:51 PM
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Default Re: 17x11s on dyno runs????

Good to know, thanks for the info <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Old Feb 16, 2003 | 04:49 PM
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Default Re: 17x11s on dyno runs????

6rwhp difference... Wow!! My next dyno will be on 275's for sure.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Old Feb 16, 2003 | 05:30 PM
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Default Re: 17x11s on dyno runs????

315's, 4:10 gears, no cut out, double disk clutch cost be about 15 HP on the dyno. based on what another LS1 with the exact mods same speed shop but had stock tires, gears, and clutch.

I came in at 417 hp the other LS1 came in at 431.

<small>[ February 16, 2003, 05:31 PM: Message edited by: rh2772 ]</small>
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