More 460 questions
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From: Upper Left Coast
More 460 questions
Howdy all,
I have a 460 in my boat. It's got the stock carb on it and the stock distributor.
I am considering rebuilding it this winter and installing a Holley throttle body (marine model) EFI that's available and an MSD marine electronic distributor when I put it back together.
Has anyone used a Holley throttlebody EFI on a any 460? was it worth it?
Thanks,
Rick
I have a 460 in my boat. It's got the stock carb on it and the stock distributor.
I am considering rebuilding it this winter and installing a Holley throttle body (marine model) EFI that's available and an MSD marine electronic distributor when I put it back together.
Has anyone used a Holley throttlebody EFI on a any 460? was it worth it?
Thanks,
Rick
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Joined: Nov 2001
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From: Escondido, CA
EFI is worth a lot when you consider the prices of gas. As for your boat I wouldn't have a clue as to what power you may be lossing but I do know the part throttle responce will be worth it not to mention saving a little bit on the gas. I am assuming you can also custom tune the EFI since it is aftermarket. One place to find out for sure is to call Holley and ask. They should have some info that you can back up here if you need more assurance that the price is worth it. I have also seen some builds in a few car mags covering it. A majority of the time they claimed it was worth every penny of it, remember corporate sponsership.
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Logistics Pro
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From: Upper Left Coast
I'm not sure I would lose power. Holly has a pretty good line of EFI systems, Multi-port and Throttle-body.
It doesn't appear that they have a multi port Marine system but they do have a Marine TBI system.
The engine is rated at 335hp @4800 rpm. You can build the 460 to do just about anything I guess. The major limitation in a boat is the manifolds. The downside of the Holley system is it's high price...It's about $2300.
you'd have to put a lot of gas thru it to realize a payback....It might take more years than I'll use the boat.....on the other hand the better performance/running might be worth it.
It doesn't appear that they have a multi port Marine system but they do have a Marine TBI system.
The engine is rated at 335hp @4800 rpm. You can build the 460 to do just about anything I guess. The major limitation in a boat is the manifolds. The downside of the Holley system is it's high price...It's about $2300.
you'd have to put a lot of gas thru it to realize a payback....It might take more years than I'll use the boat.....on the other hand the better performance/running might be worth it.
Originally Posted by airharley
EFI is worth a lot when you consider the prices of gas. As for your boat I wouldn't have a clue as to what power you may be lossing but I do know the part throttle responce will be worth it not to mention saving a little bit on the gas. I am assuming you can also custom tune the EFI since it is aftermarket. One place to find out for sure is to call Holley and ask. They should have some info that you can back up here if you need more assurance that the price is worth it. I have also seen some builds in a few car mags covering it. A majority of the time they claimed it was worth every penny of it, remember corporate sponsership.
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Joined: Dec 2003
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From: iowa
Well you might not realize a savings that will pay for it, but you might realize enough gain when you decide to sell it to make that worth while. Don't know for sure, but I bet it would be a good selling point.
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Hope you will consider our Marine D.U.I.-Davis Unified Ignition. See it at:
http://www.performancedistributors.com/marinedui.htm
http://www.performancedistributors.com/marinedui.htm
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From: Upper Left Coast
It looks an awful lot like a GM HEI distributor..
I put an HEI on my previous boat (L6cyl GM/Mercruiser). An excellent distributor. It made starting /idle/running mo-better!
I put an HEI on my previous boat (L6cyl GM/Mercruiser). An excellent distributor. It made starting /idle/running mo-better!
Originally Posted by PerfDistIgnition
Hope you will consider our Marine D.U.I.-Davis Unified Ignition. See it at:
http://www.performancedistributors.com/marinedui.htm
http://www.performancedistributors.com/marinedui.htm
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Yes, it is designed like an HEI distributor, but our's is more powerful AND custom curved on a distributor machine for your motor.
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Hotshot
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From: iowa
Curious (and not trying to be mean or anything else, just want the answer for my own curiosity and to decide my opinion on them before giving it to anyone else if you know what I mean) Did you solve the heat soak, spark scatter problems that the GM HEI had expecially at high rpms and how if you can tell me.
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We feel like we have perfected the HEI style distributor. Our coils and modules work together to produce a longer duration spark. This in turn allows a wider plug gap. We suggest .050"-.050", burning your fuel more completely, hence more power. Because we actually adjust the end-play between the gear and the housing by hand, spark scatter is eliminated. Each unit is curved on a machine based on the cam duration, type of gas, compression ratio, weight of the vehicle(boat), etc. inorder to insure the best possible throttle response.
What do you mean by "heat soak?"
What do you mean by "heat soak?"
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No, heat soaking is not a proble with our DUI(HEI) distributors. Our Street/Strip unit fires to 7000 rpms and our Racing DUI fires to 9000 rpms.
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