Stuff you need to switch over to an LSX platform.

[blazeracer]

will the ls engine be lighter then my BBC 455  and if you stay with fuel inject will it fix the choke problem i have till it get ready to play think.gif

The BBC weighs about 650lbs and the LM7 version of the LS motor weighs in at about 490lbs. That's stock motors, intake to oil pan, no accessories. If you score and aluminum block LS the weight is 430lbs.

A stock 460 my boat came with weighs in at a hefty 720. Imagine pulling 300lbs out of a boat going from a BBF to an all aluminum LS motor that probably makes more power!! That's taking two riders out of your boat.

 

[sidewinder]

i need to lose some pounds in the back of the boat me and my wife are not little  people
she has a hard time trying to get back in the boat if i go back and help we will dip the back under
and two people will help thanks :smile29:

 

[blazeracer]

Found another necessary part to run an LS in a boat. The alternator bracker. I was wondering how to do this without any accessories. I have stereo and stuff in my boat, so I need an alternator. Plus I'm pretty sure you don't want voltage drop with EFI.

http://www.madmanandcoracing.com/shop/item.aspx?itemid=119

Pics of it installed.

http://ls1tech.com/forums/forced-induction/1409452-bmr-bracket-stock-alternator-truck-manifolds-pics.html

EDIT: Another option.

http://www.ebay.com/itm/LS1-Race-Alternator-Bracket-Hardware-Kit-Belt-/250890169010?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item3a6a382ab2

This would count as one of those pieces that no matter which LS platform motor your went with, it will be used.

 

[spd500]

I would not run a boat without an alternator . I have been thinking I will probably try to run a one wire alternator on mine , but will have to take a look at it when I get the motor in the boat and see how much room I have to make something work . Another option would be to run the crank driven alternator if you have room in front of the motor for it .

 

[spd500]

Since you ended up with cast iron block , are you going to run it without the heat exchanger and water pump setup ? If you run the exchanger and water pump setup it may be easier to use the serpentine system and try to find a configuration that will work without the power steering and A/C ?

 

[blazeracer]

The thing is the bracket has to line up the belt properly. With that bracket I can run the stock alternator on ANY LS motor that will plug right into the harness with no headache, even when I upgrade to a monster 427 inch all aluminum blower motor.

 

[blazeracer]

Since you ended up with cast iron block , are you going to run it without the heat exchanger and water pump setup ? If you run the exchanger and water pump setup it may be easier to use the serpentine system and try to find a configuration that will work without the power steering and A/C ?

I'm gonna run lake water. If I was going to run a water pump I would just lop off all the power steering parts of the original bracket and use it.

 

[blazeracer]

IF you score a 5.3 and your gonna switch to an LS1 intake and injectors. EV6 to EV1 injector adapters are needed to connect them to the truck harness.

http://www.summitracing.com/parts/CEI-109076

 

[spd500]

The all aluminum blower motor will add the need for a water pump  :smile30: Also , the one wire alternator don't have to plug into the harness at all , just needs to go back to the battery . Our situations are a little different though , I am not using any part of the factory harness .  think.gif

 

[vdrivegrimes]

i have a factory 5.3 truck computer, pm me a offer. thats if yall need one.

 

[blazeracer]

i have a factory 5.3 truck computer, pm me a offer. thats if yall need one.

I scored my 5.3 motor with harness and computer for $400. Block and heads are down to bare metal. Gonna get em hot tanked tomorrow then put them back together later this week. I do need an aluminum Chevy bell housing with a pump mount, prolly ought to post that up in the wants and needs section.

 

[spd500]

I know a guy in the Houston area who has a three point setup for BBC for sale . I will send you his number , he is not on here . Great guy , and he has tons of parts if you need something else .

 

[blazeracer]

Got lucky and scored one on a trade for one of the Ford ones I have here now. Will only cost the UPS to ship mine to him.

Next I'll have to modify the Ford cradle to fit Chevy motor mounts.

 

[Last Mohecian]

Seems there is a lot of people putting LS motors into fox body mustangs.  I wonder if there is some kind of mount already out there to fit your application.

http://www.speedwaymotors.com/Hooker-LS-Swap-Engine-Mounts,55400.html

http://www.welderseries.com/blog/online-store/ls1-motor-mounts/

 

[blazeracer]

The second link has the LS104 mount. Looks like it takes a 460 Ford stock clamshell and mounts it to that plate, which mounts to the LS1 block. I think I can mock up something from scrap metal and try that one out to see if the width is correct. Then just have to reposition the cradle to the "new" correct spot. Shoot, could probably get a mild steel plate, drill a few holes, tap a couple more and call it done.

Definitely will work on this one while the block is empty.

Looking at the LS166 plates I may not even have to move the cradle at all!

 

[spd500]

The machine shop says I can mill a set of 241 heads about .030 to .040 and shim the rocker stands to bring the compression back up to 9.5 - 9.8 . It only costs $80 to mill the heads a little . I found a good deal on a set of 241s over on the LS forums , so it would be cheaper than upgrading the heads I have on this motor . What do you guys think ?

 

[Last Mohecian]

The machine shop says I can mill a set of 241 heads about .030 to .040 and shim the rocker stands to bring the compression back up to 9.5 - 9.8 . It only costs $80 to mill the heads a little . I found a good deal on a set of 241s over on the LS forums , so it would be cheaper than upgrading the heads I have on this motor . What do you guys think ?

I guess it depends on your ultimate end goal.  That seems like a fairly cheap upgrade depending on the condition of the 241s.

 

[blazeracer]

If I was going keep this motor in my boat I would be running 241's also, but I will be swapping to some bigger inches later in life.

 

[spd500]

The 241s are already ported . And I might be able to pickup the matching cam the guy was running on his setup .

 

[blazeracer]

I did the last reply on my phone at my son's basketball practice. The best thing you'll get with those heads is a 2.00 valve versus the 1.89 in the 862 head AND a larger combustion chamber. That would be a very boost freindly combo.

If the conversion in the Glastron works out well a turbo'd 5.7 with 317 heads may be in the Enforcer's future. Gives a similar low compression boost freindly package.