502 to 540's
#11
Registered
It is a very expensive way to gain 38ci so about 38hp. Other ways to do it for less money, less hassle.
#13
Registered
#14
Registered
iTrader: (3)
To gain 150HP, you'll need a rotating assembly, even if you go with Scat stuff your looking at 2k, just in crank, rods, pistons, rings with the ARP bolt upgrade.
You'll need to get the machine work done, a new internally balanced harmonic damper and flywheel, probably another 700 or so.
With block machine work, balancing, etc, I'd say you'd have 3500-4000 just in the shortblock.
Youll need a GOOD set of heads. CP sells Dart Pro 1 marine roller spring heads for about 2500 bucks a pair.
A new Cam and say some morel roller lifters, timing chain, possibly pushrods, around 1000 bucks.....
Stock HP 500 carb wont cut it, so figure another 1000 bucks for a new dominator carb.....
Misc gaskets, and parts, another 500.00......
My guess is you'll be somewhere in the 10,000 dollar range to squeeze 700-725HP out of your HP500, N/A.
Or, if the engine is healthy, you can pick up something like this, and bolt some carbs on, and make the power you're seeking for around 3500 bucks....
http://www.offshoreonly.com/classifi...o43863-en.html
#15
Fast Singles Club
Gold Member
iTrader: (8)
I say put a blower on it.
To gain 150HP, you'll need a rotating assembly, even if you go with Scat stuff your looking at 2k, just in crank, rods, pistons, rings with the ARP bolt upgrade.
You'll need to get the machine work done, a new internally balanced harmonic damper and flywheel, probably another 700 or so.
With block machine work, balancing, etc, I'd say you'd have 3500-4000 just in the shortblock.
Youll need a GOOD set of heads. CP sells Dart Pro 1 marine roller spring heads for about 2500 bucks a pair.
A new Cam and say some morel roller lifters, timing chain, possibly pushrods, around 1000 bucks.....
Stock HP 500 carb wont cut it, so figure another 1000 bucks for a new dominator carb.....
Misc gaskets, and parts, another 500.00......
My guess is you'll be somewhere in the 10,000 dollar range to squeeze 700-725HP out of your HP500, N/A.
Or, if the engine is healthy, you can pick up something like this, and bolt some carbs on, and make the power you're seeking for around 3500 bucks....
http://www.offshoreonly.com/classifi...o43863-en.html
To gain 150HP, you'll need a rotating assembly, even if you go with Scat stuff your looking at 2k, just in crank, rods, pistons, rings with the ARP bolt upgrade.
You'll need to get the machine work done, a new internally balanced harmonic damper and flywheel, probably another 700 or so.
With block machine work, balancing, etc, I'd say you'd have 3500-4000 just in the shortblock.
Youll need a GOOD set of heads. CP sells Dart Pro 1 marine roller spring heads for about 2500 bucks a pair.
A new Cam and say some morel roller lifters, timing chain, possibly pushrods, around 1000 bucks.....
Stock HP 500 carb wont cut it, so figure another 1000 bucks for a new dominator carb.....
Misc gaskets, and parts, another 500.00......
My guess is you'll be somewhere in the 10,000 dollar range to squeeze 700-725HP out of your HP500, N/A.
Or, if the engine is healthy, you can pick up something like this, and bolt some carbs on, and make the power you're seeking for around 3500 bucks....
http://www.offshoreonly.com/classifi...o43863-en.html