Interested to see what the ported LS intake did for your ET.

Has anyone attempted to port an OEM LS3 stock intake manifold?? I wonder it they respond to porting like the LS2 intakes do??

Bill

 

The porting for LS3 intakes does indeed help, at least Juic3d got a great gain from it on the dyno and on the track. He has a thread on it if you would care to look at it. Search on this website is too difficult to bother if you're not interested. FYI Google does a better search if you put in corvetteforum.com and some key text and the user name, FYI.

But, you have to consider, his dyno tune was from a different tuner with the ported intake; and, his track time improvements are, in my estimation, nearly 100% by him becoming a much better driver.

My track time improvements in my sig, from 11.5 to 10.99 from a FAST only, are a little misleading, as I took out my passenger seat and put on skinnies and learned to launch at 100% throttle.

but as my sig is limited in characters I can't say all that.

The real gain from my FAST was .2 and 2-3 mph run in and run out and my dyno gains were noted in my post earlier today on my thread on gains.

I had a ported ls2 intake prior to the fast. It gave me about 10 rwhp, I have a dyno thread on that somewhere, but 10 rwhp is not enough to change track times.

 

Joe....

I got my car back today, and road tested it....NO I worded that wrong, I "BUTT TESTED" it, and with all my years experience in racing, I can say for sure it will run.....

Well into the 9 sec. zone!

Waddya mean I'm fullofs$it, are you saying my 11.7x car wont run in the 9's after porting the intake ????? I have a very "experienced ButtOmeter....

Naaa in all seriousness, I cant tell any difference, it was just spinning the tires (outside temp was 42 deg) I did have my Nitto Drag Radials on but they didn't make any difference... I'm just gonna have to wait for a "Track Day" to see if or how much better it's running....

 

John, I thought you were going to 'break it in' (rebuilt trans/rebuilt converter etc.) a little bit (150 miles?) before jumping on it at all?
Please do this.

 

Marc....

Two things...#1 I honestly never gave it more than 1/2 throttle, and never went over 4000 rpm (all I got was spin)

and # 2 I called FTI and spoke to the guy (Gary) who saw my original converter, and built the one I now have.. He said the lock up clutch in the converter was caused by something (electronic, or mechanical) in the trans that permitted the converter to lock up during my 1st run when the rpm dropped from app 6000 to 4000..
He said the converter was ruined after the first run when it locked up...

He also said if I wanted to get more MPH to get a 3 disc clutch which is BUILT to lock up, but it wouldn't help me much at my HP level & I'm better off with what I have...

BTW I got the dyno sheet from Cartek and it made 395, so I guess I'm going to have to live with that, but if it can run 11.6 I'll deal with it.. or I'll start saving $$ for a cam....

He also said if the trans was redone and working correctly and NOT locking up the converter it's fine to race it the first day... However I was told this AFTER I got home, and had tried a few 1/2 throttle starts, and hitting the gas while going about 40-45 mph.

So now I know it will be OK but due to the cold roads and NO traction EVER, I am going to do as planned drive it easy for 200-300 miles..

 

True.
But I do NOT like the idea of a multi disc converter in a naturally aspirated (or even forced inducted) Corvette making under 700rwhp, but that's just me.







Keep in mind that quite a few people have been able to dip solidly into the high 10s with that kind of power, myself among them.

 

Hell I'd be ecstatic with a mid 11 sec run (11.4 - 11.6)