Is a D1SC capable of making 700 rwhp.

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Mar 22, 2005 | 12:48 PM

#16

1bad2k2ta

Registered User

Joined: Feb 2005

Posts: 37

From: San Antonio area

Re: Is a D1SC capable of making 700 rwhp.

Quote:

Originally Posted by Ponyhntr

Yes, ATI makes an F1C. It is bigger than an F1, but smaller than an F1R. The impeller in the F1C is smaller, but more aggressive than the F1R. The F1C also has a 5.73:1 step-up, where the F1 and F1R have a 5.0:1.

Be aware that the higher step up will also result in higher parasitic loss, and a greater likelyhood of belt slippage. Just something else to consider. Cog setup might be in order, but they tend to wear the belts out faster and put more strain on the crank snout. Everything is a trade-off.

Mar 22, 2005 | 09:55 PM

#17

Ponyhntr

Registered User

Joined: Feb 2001

Posts: 946

From: Lees Summit, MO

Re: Is a D1SC capable of making 700 rwhp.

Quote:

Originally Posted by 1bad2k2ta

Be aware that the higher step up will also result in higher parasitic loss, and a greater likelyhood of belt slippage.

That is incorrect. The higher step-up allows you to run a larger blower pulley (which means more belt-to-pulley contact) and get the same or higher impeller speeds.

Also, on a weekend cruiser a cog belt really doesn't have any drawbacks. I know of someone that has a cog drive F2 on his BBC 70 Camaro that makes 800+ hp. He drives it at least 2 times a week in the summer and has had the same belt on it for over 2 years. I wouldn't suggest running one on a daily driver, but again, some people do it.