bluestreaks

iTrader: (3)

ok so i decided that im not going to trade my car in for the lnf, but instead build it to make more power.

im not going to use the motor thats in my car right now, so im gonna go ahead and buy a new/used motor. my question is if i buy an 07 l61 motor, can i put that in an 05 ls body with the 05 ecu?

GRok25

off topic but where in nj are you?

bluestreaks

iTrader: (3)

central in woodbridge hbu

GRok25

Yeah I know where woodbridge is. im down in east windsor near freehold and hamilton. ypu know where that is?

bluebalt07

iTrader: (8)

You can use the block for sure and probably the whole engine but not totally sure. The only reason I say that is because 07-08 L61's have a cam position sensor on the intake cam. Because yours does not, you won't have a connector for this sensor and your pcm won't read it. In theory I would say this shouldn't be a problem and that the only way it would be a problem is if you did the opposite. For instance, you couldn't take an 05-06 motor and use an 07-08 pcm because it would need the input of that sensor and since the head wouldn't have the sensor, it wouldn't work. Hopefully that makes sense.

bluestreaks

iTrader: (3)

yea that makes sense as for the cam sensor, i probably wouldnt even attached that since the 05 ecu doesnt read out cam timing, so that shouldnt be an issue i would simply plug the sensor hole or just leave the sensor on there,

any other difference in the motor?

and yes sir i know where freehold is, my girl loves to shop at freehold mall

bluebalt07

iTrader: (8)

Forgot 07+ also has individual coil packs, whereas you, I believe, have one big one that bolts on the valve cover and only has one plug. Shouldn't be an issue though if you were to swap your head onto the 07+ block.

bluestreaks

iTrader: (3)

i cant just swap the coils?

TommyTwinCams

an 07 engine requires a bit to work in an 05. The crankshaft would have to be switched to an 05 style (for ignition timing) and so would the head. If you're building it for power, you're gonna have it apart anyways. 2007 L61's are gen 2 ecotecs meaning a stronger block and better internals. 2000-2006 L61's are gen 1 ecotecs.

bluebalt07

iTrader: (8)

No they don't attach the same way between the 2 gens of the engine and there are individual connectors on the 07+

Forgot about that reluctor wheel but as you said, its gonna be apart anyway and all he's gonna need is the block from the 07+

bluestreaks

iTrader: (3)

ok, thanks everyone just making sure, cos im buying a motor tom.

bluebalt07

iTrader: (8)

Yeah definitely get a gen 2 block, unless you plan on sleeving it and then it really doesn't matter. Only thing with that is you are going to need the crank and head from your current motor to make the gen 2 block work and that means you won't be able to build up the spare and just swap it. You will have to have both motors apart at the same time.

bluestreaks

iTrader: (3)

wait wat?? i need the 05 crank? are they not the same crank with the 07? isnt the rod lenth the same with both blocks?

1LowLS

Yes you will need to use the 2005 crank as they changed the trigger wheel on 2007's.Gen2 head ports are slightly larger as well

bluestreaks

iTrader: (3)

fu#k!, alright i dont feel like taking my block out while rebuilding the spare, so therefore i will find am 05 rotating assembly

bluestreaks

iTrader: (3)

i swear it seems like switching the ecu would cost alot less

1LowLS

Why don't you just build the one thats in it?You don't even have to pull the motor.That's how I did my 07.Dropped the pan,pulled the head.Honed the cylinders out,Forged internals,ported the **** out of the head with 82# valve springs and arp headstuds and re assembled.It's not hard at all and you wouldnt have to biy another engine

1LowLS

Also swapping from a E16a ECU to a E37a ecu would require a complete harness swap from tail light to headlight including all interior harness.

bluestreaks

iTrader: (3)

i would do it with the block in the car, but i dont wanna be down a car sincee its my dd.

bluebalt07

iTrader: (8)

Yes you have to use an 05 or 06 crank and as 1lowls said, an ecu swap would not be cheap or easy unless you love dealing with huge bundles of wires. Your kind of between a rock and a hard place because I know you want the extra strength that the gen 2 block provides but don't want to have to take 2 motors apart at once. If I were you, given that you want to be able to drive your car while building a motor, I would get a gen 1 block and sleeve it. It's gonna cost more than just buying a gen 2 block but it's the only way you are going to build and still have a running car. The only other option would be to buy 2 motors (a gen 1 and a gen 2) and swap the crank from the gen 1 into the gen 2 block and proceed building. Only issue there is that you would then have 2 motors to get rid of after your build

bluestreaks

iTrader: (3)

yea sleeving was an option before i fell asleep last night, but when i woke up and was shopping around, my options changed, so therefore ill be getting a new/used gen 2 block and get a gen 1 crank with all the rest of the parts that i need with out buying the block,

so shopping list:
gen 1 crank
gen 1 head
gen 2 block
wiseco pistons stock 10:1 c/r
arp studs
cometic head gastkets
eagle rods
stock bearing
no cams, cos i heard that its a bitch to tune via trifecta

BankerBalt

are you going to build your head too?

bluebalt07

iTrader: (8)

Cams aren't really worth the expense imo. There's so many other things that that money could be spent on

TommyTwinCams

don't forget Ferrea valve springs and LSJ valves.

bluestreaks

iTrader: (3)

no head work for now and springs or valves, just a buil bottom end