HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  Techno Duck on Sat Feb 06, 2016 3:22 am

I wouldn't worry about too much power if this is a street car. Just be sensible with it and you will be fine. The power-band is so predictable that even with all the power its easy to drive. Also the 944 handles the extra power with no problem. Just no launches and remember to roll on the throttle if you want your transmission and CV's to last.

My LS1 is probably making similar power to a stock LS3. On 93oct it made 380whp which is pretty close to what most stock LS3's do. This is with a cam, long tubes, LS6 intake and ported throttle body. The car hauls ass but as long as you respect the power and have a reasonable amount of rubber on the back (275's on mine) it hooks fine. If your really trying though, you can spin the tires through 3rd gear Twisted Evil .

I think your on the right track though. I looked around for a good LS donor for a friend of mine last year and was surprised at how limited the options were. The LS1, LS2 and LS6 are not as easy to find nowadays and most are asking what i think is crazy money for a used engine. If i were shopping for an engine again i would be looking at a crate LS3 or a 5.3L like you. Personally i would probably go with the LS3 because it would cost you a minimum of $1k to get the same power of a LS3 from the 5.3L if you factor in a cam and essential valve train upgrades. Starting out fresh with a brand new engine is also really nice!

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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  erioshi on Sat Feb 06, 2016 3:29 pm

Personally, instead of adding power later I'd try to get close to my target right out of the box. Since the single largest power increase will come from a combination of ported heads, new cam, and quite possibly upgraded valve springs, the cost of the upgrade might be a significant percentage of your original crate engine price. You would likely be money ahead spending even an extra $1,500 (depending on upgrades) to start with the extra power.
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Post  kevin924kevin on Sat Feb 06, 2016 3:39 pm

Crate depot 6663.oo US 480 hp ready to go. I bought my harness / contoller pedal etc GM parts direct. 950. If I remember. Just saying.
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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  jHo on Sat Feb 06, 2016 9:33 pm

Thanks for all the replies. Especially those with personal experiences with similar power level.

Techno Duck, thanks for the thoughts about rolling on the power, etc. I have stayed away from trying to act cool with a burnout, when I cooked the original rubber clutch. And that was with the stock NA "power"! So I don't plan on beating on it. But I do appreciate your thoughts on the power, and your build sounds nice.

I do like the thought of hitting the goal right away. But I also know, after years of DE's and track days, there's always that point that you want a little more. And I mean, judging by the horsepower creep of the automotive market, Camry's and Accords will have 500hp 5 years from now. So I'll probably want to kick up the hp then too.
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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  Techno Duck on Sun Feb 07, 2016 2:39 am

Even on the track i think 430bhp will last you a long time before you wanted to upgrade. My car, power wise is so far beyond my skill level i sometimes coast down the last 3/4 of the straights. Embarassed . Mind you, 430bhp in a sub 3k lb car has a power to weight ratio equal to a 997TT.

Personally i would just go crate LS3, but its easy to spend other peoples money. If you just want to put it in the car and probably never touch it again the LS3 hotcam engine Kevin mentioned would be nice though i honestly cant imagine what my car would be like with another 100bhp, probably straight up dangerous haha.

The only thing i really am not crazy about with the LS3 is its drive by wire, maybe i'm just old school but i prefer the cable. My friend is using the LS3 hot cam in the swap he built and the pedal took some time to get hooked up. I forgot how much power his car made but i think it was close to 500bhp with a good tune. The guy who tuned it (same guy that initially tuned mine) said the GM factory tune is fairly conservative on that engine, so there is a lot of room for improvement.

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Post  kevin924kevin on Sun Feb 07, 2016 12:32 pm

The crate motor and controller are plug and play.They layout all the wiring very nicely. I will have to double check but mine is 6 wires and Half of them are grounds. I don't no what troubles techno ducks friend had with the accelorater pedal but it took me about an hour to install my pedal. In fact when you remove the stock pedal it's drill a few holes and it sits nice on the old pedal stop and into the start of the tunnel. I will take some pics. As techno duck stated the tune from factory very mild. When I was deciding on what cam to use. Mine was stock 430hp. I did a lot of reading on line about cam tests.
With all the different companies doing theses tests on the LS motors and specific on the 430 LS3 they did a base tune on the motor before starting to change out cams. Every article I read they were all able to put a good clean tune into the stock motor and achieve on average 485 hp to 493 hp. That's a lot of ponys just with a proper tune.in the end I did the gm hot cam. So according to gm that cam bumps me up to 480 hp stock. If you add what was gained in the initial tune you are around 530 hp. Now you add stainless long tube pipes. They say they add another 40 plus hp dinoed and I think they state more power in thee add but 40 on the safe side your now at 570 add à new intake 10 hp. You can see the math. Don't take my word but I did a lot of research about the engines and the key is let them breath. There are a lot of good articles on line that support what I mention. They were car craft hot rod etc. I am hopefully dropping mine on the dyno soon just engine to have it tuned and run in. I am very curious to see what it makes. As techno duck said you get 500 plus hp in these cars and scary fast. Mine is a 78 924 2640 lbs to start. Hope to be around 2500 when complete. Power to weight will be awesome.
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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  docwyte on Sun Feb 07, 2016 12:37 pm

In my experience doing math like that ends up with you being disappointed with the final result when you get it on the dyno and tested...

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Post  kevin924kevin on Sun Feb 07, 2016 12:44 pm

I am just saying. If what they say is half accurate you can produce some good reliable hp that will be daily driver friendly. For me if I have a solid 500 plus hp at the end of the day there will be zero dissapointment. My car was 110 hp from factory and was a lot of fun to drive. Add the new hp and I can't wait. But if you are by new crate mill for the money the 480 is a good buy.
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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  docwyte on Sun Feb 07, 2016 12:46 pm

My point is it's not accurate at all. You can't just add up HP claims and think you're going to have an eleventy billion HP engine...

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Post  kevin924kevin on Sun Feb 07, 2016 12:54 pm

Ya I understand that doc. But a base 430 or 480 stock is a good solid platform to start with. That's all I am saying.  The dyno will tell the truth at the end of the day.if you have the money in your budget you can't go wrong. Not trying to piss anybody off here but to get the stock power of a new LS3 versus beefing up an LS1 my money did go into the LS3.
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Re: New Guy 1st post: Street Car Engine Choice 5.3 vs 5.7 vs LS3

Post  jHo on Sun Feb 07, 2016 4:22 pm

Thanks all.

I have heard that the base 430 is underrated and there is room to tune. And I've also heard that the 480 cam is good, but not as mean as the 525 cam. And neither of those are as underrated. So the recommendation was go either 430 or 525. And since this will be a street car, I don't want it to sound like a beast or be too rough at idle. So if I end up going crate (which everyone is talking me into) I think it will most likely be LS3 crate.

If I'm gonna do it, might as well do it right.
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