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Discussion Starter #1
I did a search and couldn't find any topics on this. I also checked my manual and other stickers on my sled and couldn't find any info. I was wondering if anyone has any info on what the top rpms would be for an '03 Indy 500. Also rpm info on a '97 Indy 500 SKS would be helpful.
 

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I am pretty sure that most years of Indy 500s were 7800rpm +- 200 rpm. It seems to me that 1997 might have been 7900, but I am not positive about this.
 

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I do know the older Indy 500 were 72hp at 7.8k but the newer 500s, hp was a bit more (something like 80hp) I'd take the guess that the revs are still the same. WL.
 

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Originally posted by white lightning
[br]I do know the older Indy 500 were 72hp at 7.8k but the newer 500s, hp was a bit more (something like 80hp) I'd take the guess that the revs are still the same. WL.
Yeah, I've heard that too. Supposedly they changed the Y-pipe and made a few other detail changes that increased the horsepower by 3 or 4. Not sure if it is true or not. I do notice that my 1996 seems to have a stronger midrange than my dad's 1991, but overall, they have about the same top end power.
 

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Discussion Starter #7
Thanks for the info guys.. for some reason I was thinking I should be running something like 8000-8500 top rpms for the '03.. guess I don't feel so bad now, running something like 7500 on a good day with a tail wind and with my lucky underwear.
 

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Make sure your secondary is set properly for belt tension Scumpman. A loose belt will make your engine lose a few rev's. Good luck with it and hope to see you soon. Happy Holidays bro.
 

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Discussion Starter #9
Hey myvertxcape.. I'm waiting on a helix for the AC secondary I bought.. wanted a roller type secondary and AC roller secondary on ebay was cheapest. I just wanted to know what revs I should be tuning the clutches to after I put on the AC one. Thanks for the info tho, and Happy Holidays to you too.
 

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Target rpm's won't change, 7800+/- a couple hundred. Should be able to shift quicker with that Cat secondary. Good luck with it. Prices for the TSS-98 rollers are going down also, once setup they do very well. I am looking at trying to get the newer one, TSS-04 sometime this winter just for kicks.
 

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Originally posted by chadd
[br]
Originally posted by white lightning
[br]I do know the older Indy 500 were 72hp at 7.8k but the newer 500s, hp was a bit more (something like 80hp) I'd take the guess that the revs are still the same. WL.
Yeah, I've heard that too. Supposedly they changed the Y-pipe and made a few other detail changes that increased the horsepower by 3 or 4. Not sure if it is true or not. I do notice that my 1996 seems to have a stronger midrange than my dad's 1991, but overall, they have about the same top end power.
Chadd, youre right - the Y pipe was changed in the newer 500. In the '96 model year, I believe the hp was about correct per your statement. I also believe the newer 500 EDGE was bumped up to close to 80hp due to higher compression heads, hotter CDI and piping changes. Dont quote me, I just dont remember all of the details that was changed to boost 80 horse. Anyone? WL.
 

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newer 500s just have a thinner head gasket i think. If your rpms are 7800-8000 your good
 

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Discussion Starter #13
Well, thanks for all the info guys.. guess I know not to go over 8000 for sure.
 

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Good Call, white lightning, the head did in fact change part numbers in 2001, the first year for the Edge chassis. The part numbers for the cylinders, the Y-Pipe, and the CDI box changed as well.
 
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