freshening a 454
10-21-2008, 02:14 PM
#11
Registered
Platinum Member
I Guess Ateco's website kinda answered my question
there 530hp 496ci marine engine has the cast crank in it , the forged is an upgrade
even knowing this if its a question of 200 bucks , i'll go forged just in case i decide down the road to get more radical with the ponies then the 475 i'm looking for
there 530hp 496ci marine engine has the cast crank in it , the forged is an upgrade
even knowing this if its a question of 200 bucks , i'll go forged just in case i decide down the road to get more radical with the ponies then the 475 i'm looking for
What heads are you using?
Square port chevys?
You should get more than 475 by default.
10-21-2008, 02:59 PM
#13
Registered
Thread Starter
Join Date: Aug 2006
Location: Colonial Beach VA
Posts: 629
Likes: 0
Received 0 Likes
on
0 Posts
781 Casting large oval heads , was gonna use a cam thats a gen 4 equivilent of a hp500 carb cam ,
and ezstriper , i havent abandoned that idea yet , but when common sence took over , if i sink 2 grand into a blower set up , then i need to stretch the wallet to do the bottem end when it melts , and it will.
i'm gonna build the bottem end , see how that extra HP feels , and come spring if the need to go even faster is still there , i'll put the screws to it (screw type blower)
aside from engine mods , i'm also putting on sport tabs and external steering , kinda like brake upgrades on the hotrod , i wanna go fast but dont wanna kill myself doing it
then i'll give you a call to put the air conditioning in
and ezstriper , i havent abandoned that idea yet , but when common sence took over , if i sink 2 grand into a blower set up , then i need to stretch the wallet to do the bottem end when it melts , and it will.
i'm gonna build the bottem end , see how that extra HP feels , and come spring if the need to go even faster is still there , i'll put the screws to it (screw type blower)
aside from engine mods , i'm also putting on sport tabs and external steering , kinda like brake upgrades on the hotrod , i wanna go fast but dont wanna kill myself doing it
then i'll give you a call to put the air conditioning in
10-21-2008, 03:08 PM
#14
Registered
Platinum Member
781 Casting large oval heads , was gonna use a cam thats a gen 4 equivilent of a hp500 carb cam ,
and ezstriper , i havent abandoned that idea yet , but when common sence took over , if i sink 2 grand into a blower set up , then i need to stretch the wallet to do the bottem end when it melts , and it will.
i'm gonna build the bottem end , see how that extra HP feels , and come spring if the need to go even faster is still there , i'll put the screws to it (screw type blower)
aside from engine mods , i'm also putting on sport tabs and external steering , kinda like brake upgrades on the hotrod , i wanna go fast but dont wanna kill myself doing it
then i'll give you a call to put the air conditioning in
and ezstriper , i havent abandoned that idea yet , but when common sence took over , if i sink 2 grand into a blower set up , then i need to stretch the wallet to do the bottem end when it melts , and it will.
i'm gonna build the bottem end , see how that extra HP feels , and come spring if the need to go even faster is still there , i'll put the screws to it (screw type blower)
aside from engine mods , i'm also putting on sport tabs and external steering , kinda like brake upgrades on the hotrod , i wanna go fast but dont wanna kill myself doing it
then i'll give you a call to put the air conditioning in
Bob will make you a cam for around 300 or so I think and you will like it a lot better than the HP500 dump truck cam.
Use an air gap intake, or eqivalent with that head for best results. You can have a shop do a little work on the exhaust ports, you can also have bigger valves installed. Those are great heads for a mild engine like that.
10-21-2008, 03:31 PM
#15
Registered
Thread Starter
Join Date: Aug 2006
Location: Colonial Beach VA
Posts: 629
Likes: 0
Received 0 Likes
on
0 Posts
actually she's running like a raped ape with the Victor Jr 454-0and a holley 750 dp , the valves are stock size , it really build torque like a monster
and even after the bottem end i still wanna keep the redline @ 5200 or below
whats wrong with the spec's on the HP500 cam ? i've riidden and driven more then a few single hp500 boats and really like the power they put out , and the curve seems like its right on for where you need the torque and HP in the mid and upper ranges , of coarse the only things i can compare to are 454's and 502/415's in similar boats
and even after the bottem end i still wanna keep the redline @ 5200 or below
whats wrong with the spec's on the HP500 cam ? i've riidden and driven more then a few single hp500 boats and really like the power they put out , and the curve seems like its right on for where you need the torque and HP in the mid and upper ranges , of coarse the only things i can compare to are 454's and 502/415's in similar boats
10-21-2008, 03:40 PM
#16
Registered
Platinum Member
actually she's running like a raped ape with the Victor Jr 454-0and a holley 750 dp , the valves are stock size , it really build torque like a monster
and even after the bottem end i still wanna keep the redline @ 5200 or below
whats wrong with the spec's on the HP500 cam ? i've riidden and driven more then a few single hp500 boats and really like the power they put out , and the curve seems like its right on for where you need the torque and HP in the mid and upper ranges , of coarse the only things i can compare to are 454's and 502/415's in similar boats
and even after the bottem end i still wanna keep the redline @ 5200 or below
whats wrong with the spec's on the HP500 cam ? i've riidden and driven more then a few single hp500 boats and really like the power they put out , and the curve seems like its right on for where you need the torque and HP in the mid and upper ranges , of coarse the only things i can compare to are 454's and 502/415's in similar boats
454-0 is a good intake for what you are doing also. It will bring in more power on the upper end of the spectrum.
With the longer crank you will need a little more duration, but you should contact bob for his opinion. He is the cam guru.
It will also depend on your exhaust set up.
10-21-2008, 04:10 PM
#18
Registered
Platinum Member
Good luck and have fun.
10-22-2008, 07:05 AM
#19
Registered
what I was leading up to, I have a complete 177 marine blower set up, also a 482 blower motor set up, with without heads, and I'm close to you...also a trick 850 flowed blower carb, I did not want to to the steering that my boat needed and I have my 2 sons that drive my boat.....
