Rebuild my 454 or swap in a 6.0?

« **on:** March 30, 2016, 10:26:49 AM »

Time to rebuild or decide on swapping to a 5.3 or 6.0 with the carb conversion what do u guys think?

« **Reply #1 on:** March 30, 2016, 10:44:30 AM »

Quote from: spareparts87 on March 30, 2016, 10:26:49 AM

Time to rebuild or decide on swapping to a 5.3 or 6.0 with the carb conversion what do u guys think?

What boat?

My 5.3 sure runs hard as hell in my boat. Im all for the LS swap

« **Reply #2 on:** March 30, 2016, 10:45:40 AM »

18 ft baker n a Berkley jg pump. How hard was the swap?

« **Reply #3 on:** March 30, 2016, 10:52:44 AM »

Quote from: spareparts87 on March 30, 2016, 10:45:40 AM

18 ft baker n a Berkley jg pump. How hard was the swap?

Easy! Easier than doing a conventional Big Block in my opinion.

You will need a Rail kit, do you currently have one?

You will need an ignition system, I recommend buying the MSD one not the Edelbrock one. The MSD is more tunable

Basic cost break down

Engine 500-1500 (depending on 5.3, 6.0, age, etc)
MSD - 350
Intake (i run an edelbrock) - 300
Rail kit/mounts - 250 (i made my own)
PTO - 150 i think (glenwood marine)
Oil pan - about 150 (check ebay)

Other than that, MOST of the stuff you ahve should swap over. The ignition is super simple. You plug the MSD into the Crank and the Cam sensors and turn the key. Its that easy, fires up about instantly.

Fuel system will need to be electronic.

Coolant system is pretty simple, but a couple extra hoses.

Ill find my thread and give you a link, also you can text me any time at 909-809-6358 and ill answer any of your questions i can

My head/cam 5.3 with a small 150 shot of nitrous pushes my heavy ass rogers 85+ ran 73 on motor this weekend with GPS

« **Reply #4 on:** March 30, 2016, 11:01:04 AM »

heres my thread, You'll see i took alot of pictures its really a shame that first 6.0 let go.

I have since figured out why it let go. And its a big thing to make sure you dont do it.

The Steam lines that are at the cylinder heads. They pump water out. Run them overboard. not into the exhaust liek i did with the 6.0. Mine now go directly over and ive had 0 issues

http://www.socaljetboats.com/projects/1970-weiman/

« **Reply #5 on:** March 30, 2016, 11:33:37 AM »

Quote from: steves86ta on March 30, 2016, 10:52:44 AM

Easy! Easier than doing a conventional Big Block in my opinion.

You will need a Rail kit, do you currently have one?

You will need an ignition system, I recommend buying the MSD one not the Edelbrock one. The MSD is more tunable

Basic cost break down

Engine 500-1500 (depending on 5.3, 6.0, age, etc)
MSD - 350
Intake (i run an edelbrock) - 300
Rail kit/mounts - 250 (i made my own)
PTO - 150 i think (glenwood marine)
Oil pan - about 150 (check ebay)

Other than that, MOST of the stuff you ahve should swap over. The ignition is super simple. You plug the MSD into the Crank and the Cam sensors and turn the key. Its that easy, fires up about instantly.

Fuel system will need to be electronic.

Coolant system is pretty simple, but a couple extra hoses.

Ill find my thread and give you a link, also you can text me any time at 909-809-6358 and ill answer any of your questions i can

My head/cam 5.3 with a small 150 shot of nitrous pushes my heavy ass rogers 85+ ran 73 on motor this weekend with GPS

I've got a rail kit installed already an I'm running the holley blue pump. I was goin to run the msd as well I've never had problem with them before. What size carb are you running?

« **Reply #6 on:** March 30, 2016, 11:36:40 AM »

Quote from: spareparts87 on March 30, 2016, 11:33:37 AM

I've got a rail kit installed already an I'm running the holley blue pump. I was goin to run the msd as well I've never had problem with them before. What size carb are you running?

My engine is a little bit of a freak. It likes a LOT of air/fuel.

but i have a very large cam also.

Im running an 850 Demon, jetted 86/93. A typical 5.3 and a typical cam a 750 would be more than enough. Probably a 650 would be fine

« **Reply #7 on:** March 30, 2016, 11:39:24 AM »

I've also been thinking of twin turbo the 5.3 or 6.0. Ok I have a 750 that's been work on so that should be plenty of carb so I guess all I'd need is a motor intake PTO oil pan an msd to get this goin plus all the stuff that makes lil problems in between

« **Reply #8 on:** March 30, 2016, 11:41:49 AM »

That link went to something else I didn't see anything on your build

« **Reply #9 on:** March 30, 2016, 11:45:16 AM »

Quote from: spareparts87 on March 30, 2016, 11:39:24 AM

I've also been thinking of twin turbo the 5.3 or 6.0. Ok I have a 750 that's been work on so that should be plenty of carb so I guess all I'd need is a motor intake PTO oil pan an msd to get this goin plus all the stuff that makes lil problems in between

a 750 would be plenty for a mild'ish 5.3

yes.

You will need front motor plates, a BBC rear plate should (should) fit.

You will need exhaust, either headers or SBF logs. I built my own headers

PTO

Ignition

Plumbing and fittings

fuel lines/system (which you should have)

Steam port vents/adapters (cheap)

a computer with a serial port. Or let me know when you are ready and i can come by and time it if youre still in Lake elsinore

Ive wanted to do a turbo deal, but if i were to i'd go with an EFI deal. Carb'd i stuck with NA and a little bit of Nitrous. It runs damn hard enough for me. Sounds like nothing else out there either. I really want to build another 5.3 and just forge everything in it. Go at it with more nitrous.

But i think the way mine runs, some more dialing and a few pump upgrades, i hoping for a solid 90 mph run. Again my boats heavy too

« **Reply #10 on:** March 30, 2016, 11:46:05 AM »

Quote from: spareparts87 on March 30, 2016, 11:41:49 AM

That link went to something else I didn't see anything on your build

The build starts on reply # 6 at the bottom of the page. With the 6.0 i had that i grenaded.

« **Reply #11 on:** March 30, 2016, 11:54:53 AM »

I think na I'd what's gonna happen so I can get on the water this year I blew it up on father's day last year an haven't been put since so I'm ready for the water again. I'll definitely be hitting you up I'm pretty sure 5.3 or 6.0 is they way I'm gonna go now that I know someone that's done it an it seems cheaper an faster then redoing my 454 plus lighter....found the link in projects an lookin thru it now

« **Reply #12 on:** March 30, 2016, 11:58:52 AM »

Would I need the motor wiring harness an stock computer? Or just the msd box you said before?

« **Reply #13 on:** March 30, 2016, 12:11:58 PM »

Quote from: spareparts87 on March 30, 2016, 11:58:52 AM

Would I need the motor wiring harness an stock computer? Or just the msd box you said before?

the MSD comes with the harness.

But there are two MSD boxes a 6010 and a 6012. You need to get an engine first, to know which box you need. A Gen 3 or 4.

My 6.0 was a Gen 4, my 5.3 is a gen 3. I bought a 6012 for the 6.0 and just switched my Crank reluctor to a 58x and used the same box for a gen 4

« **Reply #14 on:** March 30, 2016, 12:20:34 PM »

Quote from: steves86ta on March 30, 2016, 11:46:05 AM

The build starts on reply # 6 at the bottom of the page. With the 6.0 i had that i grenaded.

So you built your rail kit? Were you able to use the BBC rear plate like you mentioned? I've always been curious about LS swap stuff

Sent from my iPhone using SoCal Jet Boats

« **Reply #15 on:** March 30, 2016, 12:22:33 PM »

Quote from: BCouey on March 30, 2016, 12:20:34 PM

So you built your rail kit? Were you able to use the BBC rear plate like you mentioned? I've always been curious about LS swap stuff

Sent from my iPhone using SoCal Jet Boats

I built my rail kit, front and rear plate. I assume a bbc rear plate would work. But I don't knwo because I didn't have one.

The trans bellhousing is the same. So in theory it should be fine

« **Reply #16 on:** March 30, 2016, 12:29:02 PM »

Here's a video of mine from this weekend. I'm the one in front with the yellow on the bow

« **Reply #17 on:** March 30, 2016, 12:42:11 PM »

But there are two MSD boxes a 6010 and a 6012. You need to get an engine first, to know which box you need. A Gen 3 or 4.

My 6.0 was a Gen 4, my 5.3 is a gen 3. I bought a 6012 for the 6.0 and just switched my Crank reluctor to a 58x and used the same box for a gen 4
[/quote]

So these are the ones that have to have the USB? Awesome build BTW still haven't finished the read but sure does seem like it's goin to help alot with mine. Have you made new headers. If you have are they water injected if not do you plan on making them with water injct

« **Reply #18 on:** March 30, 2016, 12:44:32 PM »

Quote from: spareparts87 on March 30, 2016, 12:42:11 PM

But there are two MSD boxes a 6010 and a 6012. You need to get an engine first, to know which box you need. A Gen 3 or 4.

My 6.0 was a Gen 4, my 5.3 is a gen 3. I bought a 6012 for the 6.0 and just switched my Crank reluctor to a 58x and used the same box for a gen 4

So these are the ones that have to have the USB? Awesome build BTW still haven't finished the read but sure does seem like it's goin to help alot with mine. Have you made new headers. If you have are they water injected if not do you plan on making them with water injct

None of them are USB. They are all serial to program them.

I still have my same headers. I now run a ball valve at my seat and just inject water manually if I want to. Only above 3k rpm or so.

« **Reply #19 on:** March 30, 2016, 12:45:17 PM »

They are very close to my transom. I plan on making a new set sometime this year

« **Reply #20 on:** March 30, 2016, 12:53:00 PM »

Quote from: steves86ta on March 30, 2016, 12:29:02 PM

Here's a video of mine from this weekend. I'm the one in front with the yellow on the bow

Dam that thing sounds good an is moving