Gen III vs Gen IV
Gen III vs Gen IV so, i have an idea for my 2000 Z-28. when the motor goes up **** creek, im wanting to upgrade to a LS6 or LS2 or LS7. now heres my question. what the main differences btwn Gen III and Gen IV? will all the sensors interchange, coils bolt up, etc. or am i SOL?
can i get a least one good answer before i start getting bashed, PLEASE!!!!!!!!!!!!!!!!!!!
can i get a least one good answer before i start getting bashed, PLEASE!!!!!!!!!!!!!!!!!!!
On The Tree
Joined: Jul 2006
Posts: 108
Likes: 0
From: Texas
an Ls6 and Ls1 is the same cubes just diff heads. ls2 will be the easy way to go.I just put a 6.0 in my Z but it is an iron block 6.0. just swap over my cam, ls7 lifters and springs everything bolt up 1k for the engin 300 for gasketes.
an LS6 engine should bolt right up part fo part wire for wire, an LS2 however has about twice as many sensors than an LS1 -6 and has EV-6 fuel injectors, but with minor modification you should easily be able to put in and LS2, and by modification i mean buying a gen IV wiring harness adapter. As for the LS7 that we all love so much, the LS7 i've seen installed on f- bodies but the instrument cluster is not compatible to the LS7 harness so u'll have to get some guages to wire up, but i have seen it done before.
damnit man, i knew the LS1 and LS6 were pretty much the same and that theyd interchange ("How to Build High-Performance Chevy LS1/LS6 V-8s" is a great manual on them) i was hoping the LS2/LS7 were just diff designs in machining and not wiring and sensors. i dont know a damn thing about wiring, just how to bolt on and go
LS2 isn't has hard as it seems, all u need for one is an adapter harness which is just plug and play and some other sensors, as for the LS7 thats the one that u have to get ur hands dirty for. do some research on the LS2 they really aren't all that hard to swap.
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Verdad Gallardo
Joined: Nov 2006
Posts: 707
Likes: 1
From: Right across the river from Huntington, WV
58x crank/4x cam for most gen IV's. Some of the early LS2's were 24x crank and 1x cam like the gen III's. If you can find one of those you're looking at roughly $120 worth of adapter harnesses to swap it in, plus whatever having it tuned will cost you.
I knew it was either 48 or 58, should have said 58..lol
He can just take the Front Cover off and replace the Cam Sprocket with the LS2 one, might as well do a Cam swap and replace the Oil Pump too if it's torn down that far.
Last edited by the_merv; Nov 30, 2008 at 03:48 AM.
On The Tree
Joined: Jul 2006
Posts: 108
Likes: 0
From: Texas
do an 02-03 lq4 or lq9 whichever you can find. they are bolt and go thats all I had to do. I belive the only diff between the LQ's and Ls2 is that the they are Iron blocks and one of the LQ's has dish pistons. you dont have to mess with any of the wires, every thing right in plugs in. getting and ls6 is point less unless you can get it cheap. when I was looking for an engin for my car they were selling me an ls1 for $1500 that came out of a Z28 but an ls1 that came out of a vette they wanted $2800. Then ls1out of the z had 60,000 miles the one out the vette had 85,000. the ls6 will cost you more then an ls1. the diff between ls6 and ls1 is the heads, cam and intake. you have an after market intake already all you need is heads and cam. In the end it comes down to what your buget is.
my budget is basically what i can save up. my orginal plan was to get an LS6 short block and the trick flow heads and cam combo. im in no real hurry to do it, but if it comes down to it, ive got a pretty good relationship with the loan officer at the bank (plus my mom works there)
Another option not discussed yet is a LS1 stroked to 383. A forged shortblock can be had for around $3800 IIRC. Plug and play. No reluctor wheel change, sensor extensions, valley cover, timing chain cover like an LS2 swap requires.
Last edited by SOMbitch; Nov 30, 2008 at 12:08 AM.
05-06 ls2 are 24x cranks, they drop right into a f body nice and easy. easiest way is...find a 05-06 ls2(has 24x crank) and make sure it has the front timing chain cover on it(has cam sensor in it). buy the K-tech cam/kock sensor extension harness's(cheap). you have to tap the sides of the block for your ls1 knock sensors. then reuse or buy an ls6 intake(outperforms the ls2 intake) thats all
a .030 oer 6.0 lq4 will net 370ci, replacement pistons are about 400$ with rings.
243 heads milled .030 will net around 10.25 scr, with a mild cam the 4.03 bore will use up the 243 heads and make sufficient hp and plenty of tq.
will be very responsive, and excellent drivability, will idle like stock. and fair priced. i have personally made over 600rwhp with replacement pistons for lq4 which are a hypereutectic material with real nice grafal coat on the skirts.
speed pro brand. over 600 with spray, h/c etc.
243 heads milled .030 will net around 10.25 scr, with a mild cam the 4.03 bore will use up the 243 heads and make sufficient hp and plenty of tq.
will be very responsive, and excellent drivability, will idle like stock. and fair priced. i have personally made over 600rwhp with replacement pistons for lq4 which are a hypereutectic material with real nice grafal coat on the skirts.
speed pro brand. over 600 with spray, h/c etc.
