LS4GXP

iTrader: (2)

I just got done with a AFR headed 383 build. But this was just thrown in my lap.

LS3 motor with 4,000 miles for 3500$ stock.

Questions:
1) would I be a moron to pass up this deal?
2) if I were to get it will a quickfuel 750 carb Q series be enough?
3) can I use my already beefed up 700r4?
4) can I use my msd system? Not sure about the whole coil packs and what not.

My 383 has less then 300 miles, am sure I could part everything out and only take a few hundred dollar hit on it. Thanks

Orr89RocZ

iTrader: (20)

That is a pretty good price and those motors are pretty awesome motors. Respond well to mods like any other LSX.

Since you already have the 383, i'd just keep it. To do the LSx, you have to spend some money to swap it in and not sure the trans will work. Converter definately wouldnt work unless they made a flexplate that is adapted to the converter. i dont know much on the swap stuff needed.

But if you carbed it, the 750 would be ok. Still need alot of stuff to get a carbed setup to work with LSx. MSD timing controller, still need the coil packs unless you bought a conversion kit for distributor but not sure they fit the LS3's. I think they do but its just easier to buy the timing controller and coil packs rather to mess with dizzy.

LS4GXP

iTrader: (2)

Orr at this point am tired and fed up with the 383. All the gaskets need to be changed minus head gaskets. And I like the power but its not enough. I feel that motor doesn't have much to improve on it. Ls3 ON the other hand will most likely put out what my 383 does with just a cam. If it will cost an extra $1500 or so to be able to swap it then ill deal with that. Ill sell the 700 and converter to put towards a 350 or 400. I have a 400 already just needs rebuilding. That's if they work with an LS3 also, back to researching

Jim85IROC

iTrader: (2)

You'll be looking at more than $1500 to put it in. $800+ for headers, figure a few hundred more for a custom Y-pipe unless you can adapt what you already have. $300 for the carb controller, $400+ for the 4bbl intake manifold and $11 Million for nickel & dime items. A new cam is $400, plus $250 for the upgraded valve springs and another $100-ish for custom length pushrods.

Street Lethal

iTrader: (16)

Agreed. Lower the compression in your 383 and slap on a turbo charger if your not happy with it's current performance level. The LSX is a waste IMO....

LS4GXP

iTrader: (2)

Ugh not answers I wanted lol guys couldn't lie to me?? Lol thanks for the advice

Street Lethal

iTrader: (16)

You should have came to e-town, turbo V6's were running in the 8's last night....

LS4GXP

iTrader: (2)

I had to put the rear back in my firebird so I can get rid of it.

Original idea was doing a 5.3 turbo. If I were to do this or the ls3 which would be more cost effiecent

Jim85IROC

iTrader: (2)

I never said it was a waste. I just said it's going to cost more than $1500 to put it in.

In my opinion, it would be worth every penny.

Street Lethal

iTrader: (16)

It wouldn't be a waste if he were starting off with a stock engine. He has a build thread in another forum and he invested a lot into this 383 engine, and it has so much potential for what it is. To just start all over after all of that is definitely a waste of time and money...

Jim85IROC

iTrader: (2)

Could be. I'm only privy to what's in this thread. Giving up on his old motor very well could be a waste of money, but when looking just at the LS3, that in itself isn't.

Orr89RocZ

iTrader: (20)

LS3 is a great motor, but like said, it would cost alittle bit to put it in and run it. I'd be more inclined to keep it EFI and just put a cam in it. cam only will make well into the mid 400whp range, much more than that 383 is doing.

Given the fact that you have to tear down the 383 to redo gaskets, it may be ok to part it out. You have great parts in that build, so recouping some of the costs would be realistic and you could put that money into the LS3 swap stuff.

I considered an LSX build, but I have WAY to much invested in SBC stuff that I can not turn back now without serious loss. So I continued to upgrade the SBC stuff. I dont regret it.

I'm just not too familiar with the latemodel swap game. I know TH400 can bolt to LS1's so it should bolt to an LS3. Just need some special parts.

Then again, you could make that 383 much more nasty with a larger set of heads and bigger cam and single plane intake. Ported vic Jr comes to mind. 550+ hp would be possible without turning over 7K rpm. You can make a 383 a high 10 second n/a motor in a 3400lb car. Just need to have the top end to do so.

OR you can boost it or spray it if you need more power.

KiLLJ0Y

iTrader: (1)

lets ask the correct question..

WHAT IS INCLUDED IN THE $3,500 PRICE TAG??

are you getting the computer and harness too? all sensors and oil pan?

If so, thats a FANTASTIC price.. if not.. the computer and harness are another $1,000 easy...

five7kid

iTrader: (14)

I see two moronic actions: 1) passing on the deal. 2) putting a carb on it.

Pocket

iTrader: (24)

LS4GXP

iTrader: (2)

Thanks FIVE

To be honest, am scared of FI. Mostly scared of all the wiring. On top of that, i will need to redo the whole fuel system, yet again.

I know pocket does harnesses, i have 0 knowledge of anything with FI. Not even sure if my harness from a carb car will even work, just have no clue. I would love to stay FI and get the gas mileage, but am talking almost another $1000 in redoing the fuel system? Though i guess it will pay off in gas $$ in a year probably lol

This is what i was thinking, ill most likely lose 1-2 grand selling the motor, but i might want to take that hit if i go the LS3 route.

LS4GXP

iTrader: (2)

dream shot down, called the guy again tonight and the motors gone. Lasted a whopping 12 hrs? 5.3 block still an idea

KiLLJ0Y

iTrader: (1)

Orr89RocZ

iTrader: (20)

I see your selling some parts...Going turbo? what are you doing?

gbayfisher

Looks like he is going turbo!