flintwrench69

iTrader: (11)

Did you do a stock ls3 swap?

bad_bowtiexxx

stock...no, slightly bored, Rick Crawford spec'd cam, long tube headers, i dont regret taking that LS1 out of there for 1 second, the old LS1 had Patriot heads, huge cam(way too big for street IMO but sounded nice and lumpy at idle but didn't kick in until about 4,000 rpm)

eb110americana

iTrader: (4)

Thanks for the info, it is good to know that this works out in the real world.

I think I may wind up doing the computer swap anyway, just because I will be swapping the tank to the '99-2002 unit, along with all the associated hardware. That should keep the fuel gauge functioning, and hopefully doesn't cause any issues with anything else, such as traction control, or dash warning lights like skip-shift.

I've found multiple sources for the rewiring, but the labeling doesn't make much sense to me without actually looking at what needs to be changed. I haven't seen any pics so far. I hope they are not simply going off wire colors, as those often fade--and with the shear quantity, there are many sharing the same hue.

69 base coupe

I'm looking for a stock replacement non dod camshaft for my 2007 5.3 with afm. I have all other components to do this swap but I'm having trouble figuring out evactly which cam I should use. Any help would be much appreciated

bad_bowtiexxx

as far as i know, if you just want to eliminate the DOD and keep your cam, its not a special cam so it should just be new lifters(non-DOD) and trays, new valley cover and a tune, personally i'd swap the cam too just for the power potential

handyandy496

iTrader: (9)

Correct tone wheels?????

WeDgE1

By tone, I'm sure he meant tooth/toothed.

bad_bowtiexxx

yes 'tone wheel' and 'reluctor wheel' are the same things, different lingo

abq_z28

what TB are you guys using for the fbodys I was think about buying a Nick Williams 92mm because I am I going to put a ls3 on my l92 but I also heard people are using the stock ls1 TB with adapter

BennyB

iTrader: (12)

Im assuming this would be very similar for an LS7 swap and if there are any differences what would they be? Im trying to get everything ordered I will need to covert the engine harness to work with the injectors, map sensor, etc.

bad_bowtiexxx

i am running a Nick Williams 92mm throttle body, transferred my IAC motor and TP sensor, the pcv hose coming off of the TB is a little close to the throttle cable but doesn't interfere...i really thought about using a 100$ ebay special throttle body, but i just didn't want to have to worry about anything once the car was done

abq_z28

Nick Williams 92mm it is then I am putting the bottom end together this week

Faisal1993

I need help i have
Trans am 1970 swap ls2 6.0 with 243 heads ls1 intake and throttle cable 76mm
The engine work 8 piston afret 2 seconds work 6 or 5 and maybe 2 I don't know what problem in this engine the Rbm not stope in 550 it go up to 1500 and come down 750 not a good ls2 work the tuner tell me it have problem in fuel pump and inguctor it need 36 psi inguctor
What can i do help me ????

taws6ali

Hey guys I know there is A ton of useful info and that, it might be stupid to ask this after reading all these posts.
But I want to put an ls3 block into my 1999 Trans am the ls3 engine is a complete dropout with all front components. I mean other then plugs and extensions/ plug adapters computer I don't see why I would have to change the relucter wheel ? Thank you

eb110americana

iTrader: (4)

I am about to start the same install myself. Just got a new LS3 crate motor that will get modded before going in my '98 Trans Am. The reason is that the computer will not understand the signals from the sensors. Your Trans Am expects 24 pulses for each crank rotation, and 1 pulse for each cam rotation. The LS3 will shoot out 58 and 4 respectively, which will confuse the crap out of your computer. You don't have to change the reluctor wheel if you don't want to though. You can also get something like Lingenfelter's TRG-002 58x-24x Crank Sensor Trigger Conversion Module (from one of the page sponsors, so this link should be okay). For more info, read more of this thread.

taws6ali

I was thinking maybe that's all it needs to operate correctly ? I keep hearing about dod lifters and tbh not very much knowledge on that part yet

eb110americana

iTrader: (4)

If you have a true LS3, you don't have to worry about DOD/AFM as the LS3 never had cylinder deactivation. If you have an L99 (as used in the Camaro SS automatic), or other variant such as some truck motors, you will want to disable it.

*Correction: G8 automatics used the 6.0L L76 V8.

LSZ28forlife

Like to also ask a dumb question on this matter... going to be doing the same swap to my 02' Z28 here very soon the LS376/480 read everything on the adaptors and what not I'll be needing... but would also like to know if it will connect to the stock a4 in my car with no issues.?

eb110americana

iTrader: (4)

From what I understand, you can bolt up anything to the external part of the block without issue across all LS motors. My LS3 crate came with a Corvette flywheel, which I don't need/can't use, so you will have to swap that for an LS1 auto part. You will also need the LS1 oil pan, pick up, and dipstick, plus other parts mentioned earlier in this thread. Beyond that, you should be okay. (Any word from others who have completed the swap with an auto?)

You may want to beef up your transmission. That's a lot more than the stock amount of twist. I remember upping the boost on my old Bonneville SSEi with a smaller pulley and port/polish. Not really a huge jump, but it eventually did in my automatic.

taws6ali

Hey guys I just bought an ls3 crate engine... I have a 1999 Trans am with a t56 manual planning on using my factory pcm.
I understand vvt and fuel management and all that ....but I need to get clear answers about the sensors and compatibility with ls1 pcm
Map sensor would just an adapter plug work on ls3 map sensor, or do I have to use ls1 map sensor ?
Crank sensor I'm using a converter box
Cam sensor I'm using a converter box
Knock sensor (I don't understand why I cannot use my factory ls3
Would the ls3 bolt to t56 (ls1 setup) ? Do I use ls1 flywheel ? (Or is it a bad idea) 1999 Trans am t56 (ls1 setup) the ls3 crate engine I bought has a rod thing coming out of it so is it possible to bolt on my ls1 flywheel and clutch or do I need some kind of adapter ?
Sorry guys I'm new to all this I've read this thread a million times and still have so many questions thank you