Hello all, new member here but i have been on this site every day for the last few months. i will keep my questions to a minimum cause the search button has never let me down before but this question i feel is quite specific...
Ok, first my car is a 1996 chevy cavalier Z.24 with the 4T40e and i have recently done a freshen up if you will of the 2.4 motor-
new gasket set full felpro
all new timing components
new water pump
new oil pump
new crank
new oem rods
new bearings
same pistons and rings (machinest said in perfect operating order and perfect compression test)
same block checked, decked, and line honed
head is completely cleaned, shaved and shiny, but no other work was done (stock top end)
cold air intake system.
My goal for this season was to produce a reliable power-plant for a good backbone when i decide to start putting aftermarket parts on this LD9. Tthe auto trans has been fully rebuilt back up to spec along with a new tq. converter.
The real question here is if this freshened up LD9 and tranny would be able to put down the same numbers as the manual indicates, 150hp and 155tq? throw me some numbers people! i understand this is a commonly asked question but i just wanted to know if all this money spent is going to yield the results i am looking for which is really only a reliable 150 and 155. I very much appreciate your all your help -corbin
You should have no problems at all making those numbers. You really shouldn't have had a problem in the first place unless something was quite wrong, but as it stands now you probably could push well over 200 whp on your setup without too much struggle...
Marcus Williams wrote:You should have no problems at all making those numbers. You really shouldn't have had a problem in the first place unless something was quite wrong, but as it stands now you probably could push well over 200 whp on your setup without too much struggle...
Ignore this guy! He does not know what he is talking about.
It would not have been possible to make 150whp on your engine stock. They are rated at 150hp at the crank. After you take into account the parasitc drag to move the drivetrain you would be at about 130whp stock. You have done nothing to increase performance over what it was when it was new. So you are probably still at about the same place.
If you want reliablility and a good band for your buck buy the GM performance parts M45 supercharger kit. You will need to make a few chages to get it to work on your 96 since it was made for the 00-02 2.4. Read this link it will tell you what you need to do to make it work on a pre 2000 2.4
http://www.j-body.org/forums/read.php?f=40&i=105987&t=105987
FORGET GIRLS GONE WILD WE HAVE GOVERNMENT SPENDING GONE WILD!
thanks for all of your help people, i forgot to mention about the hp and tq numbers at the crank, i understand driveline loss and parasitic load. just hoping to have stock numbers at the flex-plate.
OMG
You must have an auto... the fact you said flexplate instead of flywheel, just scored you some points in my book
So far..wade is the one to listen too. If you end up going the gm supercharger route, just make sure you either alter or replace your alternator so the cooling fins are facing the right way. A lot of people don't realize that the gmsc setup makes your alt spin backwards and overheat because the fins are now blowing air away from the alt instead of at it. GM doesn't even tell you about that. Good luck dude.
Wade Jarvis wrote:Marcus Williams wrote:You should have no problems at all making those numbers. You really shouldn't have had a problem in the first place unless something was quite wrong, but as it stands now you probably could push well over 200 whp on your setup without too much struggle...
Ignore this guy! He does not know what he is talking about.
It would not have been possible to make 150whp on your engine stock. They are rated at 150hp at the crank. After you take into account the parasitc drag to move the drivetrain you would be at about 130whp stock. You have done nothing to increase performance over what it was when it was new. So you are probably still at about the same place.
Wait wait...I wasn't saying that he'd make 150 whp with a stock motor. I'm not that new to this game - I understand crank and wheel HP figures. What I meant (and I thought it came through this way, maybe not...) was that he easily could have made 150 whp with the stock bottom end - through mods, not in stock form. And again, I meant the same thing by the 200 whp number - not that after his work he was probably making about that much power, but that he'd have no problem making that amount, with power adders, on his bottom end.
Marcus Williams wrote:Wade Jarvis wrote:Marcus Williams wrote:You should have no problems at all making those numbers. You really shouldn't have had a problem in the first place unless something was quite wrong, but as it stands now you probably could push well over 200 whp on your setup without too much struggle...
Ignore this guy! He does not know what he is talking about.
It would not have been possible to make 150whp on your engine stock. They are rated at 150hp at the crank. After you take into account the parasitc drag to move the drivetrain you would be at about 130whp stock. You have done nothing to increase performance over what it was when it was new. So you are probably still at about the same place.
Wait wait...I wasn't saying that he'd make 150 whp with a stock motor. I'm not that new to this game - I understand crank and wheel HP figures. What I meant (and I thought it came through this way, maybe not...) was that he easily could have made 150 whp with the stock bottom end - through mods, not in stock form. And again, I meant the same thing by the 200 whp number - not that after his work he was probably making about that much power, but that he'd have no problem making that amount, with power adders, on his bottom end.
What you are saying now makes sense. That definatly was not how it came out when you originally wrote it.
BlownBlackZ wrote:Weebel wrote:OMG
You must have an auto... the fact you said flexplate instead of flywheel, just scored you some points in my book
So far..wade is the one to listen too. If you end up going the gm supercharger route, just make sure you either alter or replace your alternator so the cooling fins are facing the right way. A lot of people don't realize that the gmsc setup makes your alt spin backwards and overheat because the fins are now blowing air away from the alt instead of at it. GM doesn't even tell you about that. Good luck dude.
Ummm...the alternator on the M45 kit still spins the same direction...not sure where you're getting your info from. That's probably why GM doesn't make mention of it 
I can not say for sure about if it spins it the oppisite way or not. I can say I have not had any problems with my alternator after installing the supercharger.
FORGET GIRLS GONE WILD WE HAVE GOVERNMENT SPENDING GONE WILD!
well truthfully i dont intend to go the s/c route, or even turbo, i will be purchasing a wet nitrous kit- nothing over the top obviously just a 50 shot with some colder plugs and a wideband thats really all i intended to do to the car. i am also going to put your basic bolt ons on the car, like motor mounts, 4 to1 header along with a full exhaust. my final goal for this car and power plant was to have it make roughly 200 hp and 200 foot pounds- at the ground mind you. thanks for your help guys but the question still stands, will i be making 150 and 155 at the plate after break in? thanks alot everyone who posted!
