New Motors: 540 carb Natural asp. or 454 blown?
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New Motors: 540 carb Natural asp. or 454 blown?
Hi
Friend of mine has a boat with 2 x 502 carb engine. Both are very used and he think for some new stuff
Now we start thinking for something new.
In Mind are:
540, alu-heads rect. carb, Rollercam
or
454 maybe stroked to 496 and blow it with a 177 Weiand or a vortech with a carb and a roller cam
Boat will run on saltwater, 5.200rpm is what the engine shout run, i have no informations about drive and prop
Anybody has some "Yes" or "No"for the different mills?
Friend of mine has a boat with 2 x 502 carb engine. Both are very used and he think for some new stuff
Now we start thinking for something new.
In Mind are:
540, alu-heads rect. carb, Rollercam
or
454 maybe stroked to 496 and blow it with a 177 Weiand or a vortech with a carb and a roller cam
Boat will run on saltwater, 5.200rpm is what the engine shout run, i have no informations about drive and prop
Anybody has some "Yes" or "No"for the different mills?
#2
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a 540 N/A would be nice and reliable, make good power and torque, and can be had for fairly inexpensive.
a blown 496 could also make great power and be reliable, and may cost a little more up front.
The 540 will probably have to be spun more than 5200rpm to really get into the power, depending on the cam you go with.
a blown 496 could also make great power and be reliable, and may cost a little more up front.
The 540 will probably have to be spun more than 5200rpm to really get into the power, depending on the cam you go with.
#3
If you have 502's, why would you want to change to a 454 or 496??? Are these HP motors or Mag's?
Either way, a 502 block is a good start for Horsepower.. you can even make them into a short deck 540 very easily
Either way, a 502 block is a good start for Horsepower.. you can even make them into a short deck 540 very easily
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The 502 can be sold here in germany for a good amount and will make a good start-up-moneyfor the both other engines. I have a good engine builder in Baltimore. First calculation said a 540 with a new dart block would be near the same as a used rebuild 454 will cost with a 177 blower, i can get both unter 10.000 each complete running
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The 502 can be sold here in germany for a good amount and will make a good start-up-moneyfor the both other engines. I have a good engine builder in Baltimore. First calculation said a 540 with a new dart block would be near the same as a used rebuild 454 will cost with a 177 blower, i can get both unter 10.000 each complete running
Figure $2500 for the Block
$2k for rods
$1500 for crank
$2500 for aluminum heads/ $1500 for iron
$1k for cam and lifters
Add everything else in and $10k will be a stretch just for parts if you are using good stuff.
If you can get it, by all means go for it.
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Agreed.. a 4.25 Stroker kit plus some pocket porting of the heads there is on the 502 plus a blower.. there we go with budget Torque Monsters... that would be my route with the 10K budget per engine. Or even better.. go Turbo...and look at Big Rig size whistlers..
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if fuel consumption is a issue,which im sure it is in germany,,,,,,unless your filthy rich,i would go with n/a 502/540.the blown motors tend to be alittle thristy,harder to keep in tune,unless efi.if h/p is your thing,go blown.i like both.
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I would be VERY suprised if you could get a turnkey 540 with a Big M for under $10k. Built with cheap internals I guess it is possible, but not with good stuff.
Figure $2500 for the Block
$2k for rods
$1500 for crank
$2500 for aluminum heads/ $1500 for iron
$1k for cam and lifters
Add everything else in and $10k will be a stretch just for parts if you are using good stuff.
If you can get it, by all means go for it.
Figure $2500 for the Block
$2k for rods
$1500 for crank
$2500 for aluminum heads/ $1500 for iron
$1k for cam and lifters
Add everything else in and $10k will be a stretch just for parts if you are using good stuff.
If you can get it, by all means go for it.