Only made 720 hp with my Whipple??
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Only made 720 hp with my Whipple??
Don't get me wrong here, not complaining, I just thought I would see more than 720 hp. Here's why. Keep in mind, Whipple advertises 740 with their stage 2 kit and a stock engine. Here is what I've got.
Hp500efi, with Dart aluminum heads, port matched to Whipple intake . Stock hp500efi cam. New 502 block deck honed and rotating assembly balanced with all bearings within tight spec. all piston rings special end gap type for specific fit. More about the build here http://www.speedwake.com/upload/show...threadid=53577
so here is the dyno pull. there will be an AFR adjustment once more around the 3000 rpm range to even it out.
So am I wrong to expect more? And again, tons of power, and I know its going to be strong, just wanted to share this with others.
Hp500efi, with Dart aluminum heads, port matched to Whipple intake . Stock hp500efi cam. New 502 block deck honed and rotating assembly balanced with all bearings within tight spec. all piston rings special end gap type for specific fit. More about the build here http://www.speedwake.com/upload/show...threadid=53577
so here is the dyno pull. there will be an AFR adjustment once more around the 3000 rpm range to even it out.
So am I wrong to expect more? And again, tons of power, and I know its going to be strong, just wanted to share this with others.
Last edited by Canada Jeff; 05-26-2008 at 05:59 AM.
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I think 720 is a more real world result than 740 unless you have a good mefi tuner at the dyno. Did you change the compression ratio when you changed the heads.
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Let me be clear, I'm and very happy with the engine. I expected more. The stock kit is suposed to be 740 hp. So with my dart heads and port matching I thought I'd see at least more than 740hp. But I'm still very happy.
Same compresion ratio, and my tuner has recalibrated this engine over 80 times useing the MEFIBURN.COM system. Been over three weeks tuning. There was an issue with the original Whipple calibration perameters. I even bought another computer because we thought mine was fried. Turns out it wasn't.
Same compresion ratio, and my tuner has recalibrated this engine over 80 times useing the MEFIBURN.COM system. Been over three weeks tuning. There was an issue with the original Whipple calibration perameters. I even bought another computer because we thought mine was fried. Turns out it wasn't.
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But I repeat, I am happy with this engine.
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I think a cam change would easily bring the numbers up and not hurt reliability at all.