HP500s Carb build-up
07-26-2006 | 08:56 AM
#21
21 and 42 footers
Joined: Sep 2004
Posts: 8,207
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From: Richmond VA
Re: HP500s Carb build-up
Originally Posted by BajaRunner
Russ
how fast does it run with the prochargers?
how fast does it run with the prochargers?
Stock 382 with 500's should run 74, a new 382 w/ 600's runs 84, the 700's supposedly hits 93.
Russ C.
07-26-2006 | 08:59 AM
#22
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Joined: Jul 2002
Posts: 2,233
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From: pa
Re: HP500s Carb build-up
i am also going to pull my 500s this winter and shoot for 600 hp so i am also interested in any input. i know excursion on here did his 2 winters ago to around 600 hp i beleive. would be nice to get all the info as what to use from someone who has done it with good results.
07-26-2006 | 08:59 AM
#23
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Joined: Nov 2001
Posts: 3,622
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From: Austin
Re: HP500s Carb build-up
Originally Posted by t500hps
Not sure....I haven't even been on the boat yet. I have been told 98 when it was first installed (boat was new), I've heard near 95 (sometime after it was delivered), and I was told 85 on the water last week with the drives tucked IN!!! (can't verify any of this). It is a M3 intercooled system running un-known boost. Probably 5-8 PSI. Like I said I will be selling the entire Prochrager systems this fall and going back N/A EFI.
Stock 382 with 500's should run 74, a new 382 w/ 600's runs 84, the 700's supposedly hits 93.
Russ C.
Stock 382 with 500's should run 74, a new 382 w/ 600's runs 84, the 700's supposedly hits 93.
Russ C.
07-26-2006 | 10:26 AM
#24
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Joined: Nov 2004
Posts: 14,090
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From: On A Dirt Floor
Re: HP500s Carb build-up
Keep carb (Holley 800)
Keep intake (Dart)
Cast Iron heads ported by Jim Valeko or New Aluminum AFR's with valvetrain spec'd by RmBuilder
Cam by RmBuilder
Shortblock can be stock - just make sure it is fresh.
=====================
Exhaust is important and expensive. Do this correctly.
======================
Prop to where engine makes peak hp. Do not lug it by propping in between torque peak and hp peak.
Keep intake (Dart)
Cast Iron heads ported by Jim Valeko or New Aluminum AFR's with valvetrain spec'd by RmBuilder
Cam by RmBuilder
Shortblock can be stock - just make sure it is fresh.
=====================
Exhaust is important and expensive. Do this correctly.
======================
Prop to where engine makes peak hp. Do not lug it by propping in between torque peak and hp peak.
07-31-2006 | 12:44 PM
#27
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Joined: Nov 2004
Posts: 922
Likes: 54
From: Lago Vista TX
Re: HP500s Carb build-up
Here is a link to the build I did on a 502 Mag last year....
http://www.offshoreonly.com/forums/s...d.php?t=101736
I have 74 hours on it so far and it's STILL runnin' strong
Doug
http://www.offshoreonly.com/forums/s...d.php?t=101736
I have 74 hours on it so far and it's STILL runnin' strong
Doug
10-13-2006 | 02:24 PM
#28
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Joined: Jul 2005
Posts: 252
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From: Oneida Lake
Re: HP500s Carb build-up
Bringing this back up to see if anyone has started their build I am meeting with my engine guy this weekend. I am looking to make between 600-650 from my 502. I would like to hit aprox upper 70's in a 29 single scarab running a 28 pitch prop.
10-13-2006 | 10:22 PM
#30
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Joined: Sep 2001
Posts: 25,191
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From: Deland, Florida
Re: HP500s Carb build-up
Originally Posted by custom29scarab
Bringing this back up to see if anyone has started their build I am meeting with my engine guy this weekend. I am looking to make between 600-650 from my 502. I would like to hit aprox upper 70's in a 29 single scarab running a 28 pitch prop.
