500 efi with a 525 cam installed
06-08-2018 | 01:40 PM
#12
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From: SF Bay Area
True. I gained almost 500rpm dropping my jets down a few sizes.
06-08-2018 | 08:09 PM
#14
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From: Tygart Lake, WV
They made 524/530hp @ 5300rpms. Your spinning them 5000 at WOT. What is the hp difference between rpms? I agree that 12:1 is rich, though safe. Realistically you maybe gained 25hp per engine with the 525 cam vs 500. Prop for 5300-5400 rpms and let us know the difference.
06-08-2018 | 08:44 PM
#15
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From: Merritt Island, FL
Just for a reference when I ran my 380 hour stock HP500EFI motors on the dyno in full
trim I got 515 and 513HP.
You didnt gain much but if it was only a cam no intake, exhaust or head work I wouldn’t expect a ton.
trim I got 515 and 513HP.
You didnt gain much but if it was only a cam no intake, exhaust or head work I wouldn’t expect a ton.
06-09-2018 | 01:30 AM
#16
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Joined: Oct 2000
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From: Omaha/LOTO
You would probably only gained about 15-20hp over stock with the cams and a correct tune.
You most likely could have just left the stock tune and then made some very small adjustments while in the boat.
I'm guessing its a combination of the correction factor on the dyno and tuning issue.
You most likely could have just left the stock tune and then made some very small adjustments while in the boat.
I'm guessing its a combination of the correction factor on the dyno and tuning issue.
06-09-2018 | 08:12 AM
#18
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From: MI
I am Louis good friend and neighbor, trying to help him get this figured out also. One thing that I think is important here, and I have already talked to him about, is props. He is running the same pitch props, however they are a different set, on my advise he is switching back to the old props. I think it very well could be props as he is running less RPM and going almost the same speed.
06-09-2018 | 08:44 AM
#19
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From: Michigan
I am Louis good friend and neighbor, trying to help him get this figured out also. One thing that I think is important here, and I have already talked to him about, is props. He is running the same pitch props, however they are a different set, on my advise he is switching back to the old props. I think it very well could be props as he is running less RPM and going almost the same speed.
