Thoughts on doing some 454, 330 upgrades?
12-03-2013, 03:43 PM
#31
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My engine is a rebuilt 330 bottom end with, all ARP bolts, 088 heads, small Isky cam, roller rockers, Edelbrock intake and carb. I blew the original 330 2 weeks after I purchased my boat so I did not have money to spend on a better engine, and I built that engine on a budget. Made 407hp on the dyno and I don't run past 4800rpm. I only gained 2mph. I have been running this one for 3 seasons now and runs great but I got the itch for more speed and plan on saving money and building another engine in a few years.
12-03-2013, 03:48 PM
#32
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My engine is a rebuilt 330 bottom end with, all ARP bolts, 088 heads, small Isky cam, roller rockers, Edelbrock intake and carb. I blew the original 330 2 weeks after I purchased my boat so I did not have money to spend on a better engine, and I built that engine on a budget. Made 407hp on the dyno and I don't run past 4800rpm. I only gained 2mph. I have been running this one for 3 seasons now and runs great but I got the itch for more speed and plan on saving money and building another engine in a few years.
12-03-2013, 03:55 PM
#33
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I ran a 330 bottom and peanut port heads in my old 226. Had a comp exrteme marine.544/.547 112 LSA flat tappet, scorpion roller rockers, edelbrock performer, 830 cfm holley, imco powerflow. Ran great for years. Boat went 58-60 mph stock and would run 70 mph (69.9 GPS when I finally bought one) after the mods. Ran @ 5000 rpm turning a 25 mirage with no issue.
It was like that probably 8 seasons. Believe it or not it met it's demise over heating in the mud with an inexperienced captain who thought the trim switch was the tilt.
I would say it all depends on how you run it. But, if you can't afford an exhaust upgrade I would listen to Lil Red and keep saving.
It was like that probably 8 seasons. Believe it or not it met it's demise over heating in the mud with an inexperienced captain who thought the trim switch was the tilt.
I would say it all depends on how you run it. But, if you can't afford an exhaust upgrade I would listen to Lil Red and keep saving.
12-03-2013, 04:09 PM
#34
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Its pretty much a fact, a non stepped 32 Fountain with stock 330's ran mid 60's. With 454/365HP they ran 68-70. With 502 Mag carb (390HP), they ran mid 70's. 465HP 502's, (HP500's), they got around 80. Point is that boat responds well to power. I see no reason why doing some budget upgrades to get in the 400HP range, you shouldn't be running low to mid 70's.
Your current engines are probably worth 3500 for the pair. A set of takeout 415HP 502 mags are probably gonna run 12-14K for anything that's not in need of major rebuild ready to drop in. You can spend 10G to go 75mph, or spend a few grand and do some upgrades to what you have. "takeout" engines aren't always a win. Unless you know the person your buying from, you could end up with a pile of junk.
If you go back through some old threads, you'll find tons of 330HP buildups that easily made 400+HP, some closer to 500HP, and guys who ran the snot out of them. If you had a old 38 Scarab, Cigarette, I'd say save up for big power. But a 32 Fountain, adding 150HP to the boat will wake it up bit.
Your current engines are probably worth 3500 for the pair. A set of takeout 415HP 502 mags are probably gonna run 12-14K for anything that's not in need of major rebuild ready to drop in. You can spend 10G to go 75mph, or spend a few grand and do some upgrades to what you have. "takeout" engines aren't always a win. Unless you know the person your buying from, you could end up with a pile of junk.
If you go back through some old threads, you'll find tons of 330HP buildups that easily made 400+HP, some closer to 500HP, and guys who ran the snot out of them. If you had a old 38 Scarab, Cigarette, I'd say save up for big power. But a 32 Fountain, adding 150HP to the boat will wake it up bit.
12-03-2013, 05:43 PM
#35
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My Isky Cam Specs,
RPM-Range (2200-6500) Valve Lift (.542 .565) Valve Lash hot (.000 .000) ADV Duration (270 280) .050 Duration (221 232) LC 114
Fell flat on dyno after 5000rpm with my setup but didn't want to spin any fast anyways.
Still been playing with props so it is possible when I dial the prop in I will see 4-5mph gain. Original prop on boat was to big for both engines and I think the one I have now might be too small.
RPM-Range (2200-6500) Valve Lift (.542 .565) Valve Lash hot (.000 .000) ADV Duration (270 280) .050 Duration (221 232) LC 114
Fell flat on dyno after 5000rpm with my setup but didn't want to spin any fast anyways.
Still been playing with props so it is possible when I dial the prop in I will see 4-5mph gain. Original prop on boat was to big for both engines and I think the one I have now might be too small.
12-03-2013, 05:45 PM
#36
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Standard Edelbrock Performer manifold (not air gap) and the Edelbrock 750 marine carb
And it was broken in and tuned by Brian41 on his dyno. Brian had to put the biggest jets Edelbrock makes in that Edelbrock carb so it wouldn't run lean. I wouldn't recommend that carb if you want more than 400hp
And it was broken in and tuned by Brian41 on his dyno. Brian had to put the biggest jets Edelbrock makes in that Edelbrock carb so it wouldn't run lean. I wouldn't recommend that carb if you want more than 400hp
Last edited by Sunrocket24; 12-03-2013 at 06:00 PM.
12-03-2013, 06:32 PM
#38
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LOL! yep it made 400hp,Brian said the same thing about the carb! He said he next time I build a engine use a Holley carb! I have the Dyno sheet and Brian has it saved on his Dyno Computer.
12-03-2013, 07:03 PM
#39
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The only thing I see with sun rocket, is that his bottom end was fresh, so off to a better start. My biggest reason for not messing with the 330's is they won't sell for crap and will lower the value of the boat once you touch them. Leave them stock and sell them for more $$$. Mild thunders suggestion is a good upgrade, just note unfortunately no one will pay anymore, or within $1,000 of a stock 330 for them after you put money into them.
12-03-2013, 07:06 PM
#40
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The 32 non step fountain is about one of the best go fast on a budget hulls to work with for a v hull so IMO its worth putting some power in vs buying a different boat. I like my 31 Scarab for the same reason and it is just a bit slower than a 32 fountain with the same power.
I watch the swap shop forum quite a bit and I have seen some very good deals on drop in motors. I have seen 502 mag mpi's with 300-400 hrs in the $8000 range for a set. I also know of a very clean set with 400hrs that sold for around $7k. At those prices if he can get $3500 for his 330's the OP doesn't have much saving to do at all.
Allot of very good points to consider and some great options have been brought up but it is up to the OP to decide witch option he is the most comfortable with and what his performance goals really are. What direction will end up being the most efficient will have allot to do with luck and the condition of his existing 330's
I still would not suggest tearing into a 454 with a $1500 budget in mind or building on a short block without knowing its existing condition. Just a stock recon. on a tired 330 would exceed $1500.
I watch the swap shop forum quite a bit and I have seen some very good deals on drop in motors. I have seen 502 mag mpi's with 300-400 hrs in the $8000 range for a set. I also know of a very clean set with 400hrs that sold for around $7k. At those prices if he can get $3500 for his 330's the OP doesn't have much saving to do at all.
Allot of very good points to consider and some great options have been brought up but it is up to the OP to decide witch option he is the most comfortable with and what his performance goals really are. What direction will end up being the most efficient will have allot to do with luck and the condition of his existing 330's
I still would not suggest tearing into a 454 with a $1500 budget in mind or building on a short block without knowing its existing condition. Just a stock recon. on a tired 330 would exceed $1500.
