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Build a 650-700 hp engine. N/A or blower?

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Old 02-24-2016, 10:54 AM
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Originally Posted by caseyh
I did 598s na made 724hp 725tq on 87 pump gas.
Any estimate on valve spring replacement hours and rebuild hours?
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Old 02-24-2016, 11:28 AM
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Nice engine!!!!
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Old 02-24-2016, 11:37 AM
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Originally Posted by Tom A.
I have 700hp blower motors and love them.

That said, I would take 700 N/A motors any day for the fact they have way fewer moving parts, belts, and potential for things to go wrong and if built right can run on 89 octane. I am running 93 octane which is getting harder to find on the water.
And NA motors don't stick out of the motor cover!
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Old 02-24-2016, 11:51 AM
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Originally Posted by Keytime
Any estimate on valve spring replacement hours and rebuild hours?

Top end is norma and bottom end Ron is saying 400 and hopefully more. They are big but very low cop to run 87. Dart tall decks, alm pro 1 heads, all ported, fully roller etc.
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Old 02-24-2016, 12:25 PM
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Originally Posted by CDShack
And NA motors don't stick out of the motor cover!
Well that depends........

Potter 850 N/A and 700 N/A
Attached Thumbnails Build a 650-700 hp engine.  N/A or blower?-800efi1_rot_270.jpg   Build a 650-700 hp engine.  N/A or blower?-donzi-700.jpg  
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Old 02-24-2016, 04:52 PM
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Originally Posted by Tom A.
I have 700hp blower motors and love them.

That said, I would take 700 N/A motors any day for the fact they have way fewer moving parts, belts, and potential for things to go wrong and if built right can run on 89 octane. I am running 93 octane which is getting harder to find on the water.
Good point!
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Old 02-24-2016, 05:21 PM
  #57  
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Originally Posted by caseyh
Top end is norma and bottom end Ron is saying 400 and hopefully more. They are big but very low cop to run 87. Dart tall decks, alm pro 1 heads, all ported, fully roller etc.
Your bilge looks like a operating room, nice looking mils, whats up with the collar on the header flange......whats the bullet weigh ??
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Old 02-24-2016, 07:15 PM
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Originally Posted by MILD THUNDER
Ive been running for years without intercoolers, and have held it wot for alot longer than 30 seconds at a time. Closer to 30 miles wide open on funs runs .
I was thinking EFI, a little bit different with the carbs on top vs port EFI.
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Old 02-24-2016, 07:44 PM
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um no quote . want to delete post
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Old 02-24-2016, 07:49 PM
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Originally Posted by 33outlawsst
Your bilge looks like a operating room, nice looking mils, whats up with the collar on the header flange......whats the bullet weigh ??
going to be tight fit .. that hatch arm looks like it might hit when closing on the tails clamp ...mine was hairline close on my cig .. yours looks to be the same .. looks sweet enjoy, raised port heads n talldecks make for a wide package been there done that .. my headers had to be " leaned " as cmi calls it .

Last edited by ROB FREEMAN; 02-24-2016 at 07:54 PM.
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