500hp carbed
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i say a bravo 24,26 pitch or maybe try a hydromotive prop.
Last edited by baja36ft; 07-18-2008 at 09:09 PM.
#22
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#23
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My rough costs:
Anodized AFR Heads ss intake, inconel exh, titanium retainers, springs, cups, head studs $3,000/set (I bought the bare 305cc AFRs with the CNC chamber, RMBuilder selected the components.)
Custom cam $450 per side (RM Builder)
Morel Lifters $450 (RM Builder)
Intake pushrods ~$100
HI6M Ignition $250 plus $75 for wire/mounts etc each side
Edelbrock Victor Jr. Intake $220 plus $75 for powdercoat
Carb $900 each
1" spacer ($20 each)
Gaskets, RTV, Shop supplies, Beer $500 per motor
Dyno $300 cash (2 sessions) so $600
Freshen motor (clean, hone, inspect block, polish crank, Make rod ends round, rings, bearings, assemble heads and short block $1,000 per at a machine shop)
Closed loop cooling for aluminum heads ($1100 per)
I pulled the motors, assembled the long block, took to dyno twice, did the tech work at the dyno, installed in boat, etc.
I did not have to modify my stock 500 HP fuel system.
Like I said, not cheap and I did all the grunt work. Hope this helps.
Anodized AFR Heads ss intake, inconel exh, titanium retainers, springs, cups, head studs $3,000/set (I bought the bare 305cc AFRs with the CNC chamber, RMBuilder selected the components.)
Custom cam $450 per side (RM Builder)
Morel Lifters $450 (RM Builder)
Intake pushrods ~$100
HI6M Ignition $250 plus $75 for wire/mounts etc each side
Edelbrock Victor Jr. Intake $220 plus $75 for powdercoat
Carb $900 each
1" spacer ($20 each)
Gaskets, RTV, Shop supplies, Beer $500 per motor
Dyno $300 cash (2 sessions) so $600
Freshen motor (clean, hone, inspect block, polish crank, Make rod ends round, rings, bearings, assemble heads and short block $1,000 per at a machine shop)
Closed loop cooling for aluminum heads ($1100 per)
I pulled the motors, assembled the long block, took to dyno twice, did the tech work at the dyno, installed in boat, etc.
I did not have to modify my stock 500 HP fuel system.
Like I said, not cheap and I did all the grunt work. Hope this helps.
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Oh, BTW I changed bolts to stainless where it made sense, ARP intake, exhaust, some of the bell housing, some of the motor mount, all bracket bolts, oil pan bolts. Probably $200/motor.
I also did not have to modify the oil cooler or lines.
Fuel and oil system add another $1000 per.
Don't underestimate how expensive these projects can be, there are a LOT of hidden costs in a project like this.
I also did not have to modify the oil cooler or lines.
Fuel and oil system add another $1000 per.
Don't underestimate how expensive these projects can be, there are a LOT of hidden costs in a project like this.
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Hey thunderstruck thanks for the list that helps out. Now that i can see some numbers i no what i am getting into. See i am trying to decide if i wanna do a blower or motor work?
It looks to be relatively close in price maybe a little more for the heads and cam. But if the gains are close to the same i will just do the motor work. and keep reliability.
Does any one have any input i on blower or do the heads and cam?
Once again thanks to every one for chiming in you guys here at offshore have been a huge help. Jeramy
It looks to be relatively close in price maybe a little more for the heads and cam. But if the gains are close to the same i will just do the motor work. and keep reliability.
Does any one have any input i on blower or do the heads and cam?
Once again thanks to every one for chiming in you guys here at offshore have been a huge help. Jeramy
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TP Marine, AFR anodized heads, use to be 10% discount for OSS members. Might want to call. RM Builder is also an AFR dealer and can get the same.
http://www.tpmarine.com/index.asp?Pa...OD&ProdID=1383