Realistic Hp 500 Hp
 

WHAT IS A REALISTIC HP 500 HP BUILDUP AND STAY TURN KEY :cool:

Re: Realistic Hp 500 Hp
 

Search for wags 382's formula fastech buildup,he made 620 hp and 590 hp with a freshen job and a switch to afr 305's. It runs trouble free with no issues,boat picked up 7 or 8 mph and its heavy,Smitty

Re: Realistic Hp 500 Hp
 

Yes, 7-8mph on a 38ft boat from a top ended 502 is very impressive. In fact, I think he kept the mediocre Gill exhaust set up too.

Re: Realistic Hp 500 Hp
 

i would like to make 575 to 600 hp with the gill exhaust :D

Re: Realistic Hp 500 Hp
 

My fall project is a pair of 500EFI's. Plan on making 540's at roughly 9.5 to 1 compression. Heads are still being considered. Should hit low 600's on the Dyno.

Re: Realistic Hp 500 Hp
 

I would hope you would see more HP then that.

We did our 500 EFI's. Used Merlin World II Rect Port heads. Compression to 9.25:1, and changed to the Crane 741 came as used in the 525. Mark Boos at Precision Marine is a wizzard at the ECM program and the engines dynoed at 580 HP at 5300 RPM with all the accessories.

I have almost 60 trouble free hours and could not be happier. Kind of wish we had stroked them to 540 while we were at it.

Good Luck

Re: Realistic Hp 500 Hp
 

Mark will be getting mine when they are built too. I assume conservative numbers so I'm not disappointed......I'm sure I'll be posting results this spring.
With the 8 PSI blowers now she's run 86 GPS at 5,000, have't stretched her out yet (Formula 382)

Re: Realistic Hp 500 Hp
 

how about the 525s what is the best way to make more power with them

Re: Realistic Hp 500 Hp
 

I bought my 29 foot Scarab with a new 540 Bulldog that has a Merlin intake, shortened rocker arms, Eagle racing pistons, and it is stroked. It is supposed to have 600 hp, but I have not had it on a dyno yet. I have had it up to 65 mph at 4000 rpms so far with a 4-blade, 24 pitch prop. I still had plenty of throttle left, but I did not push it that day.