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429 sbc ls build

General engine tech -- Drag Racing to Circle Track

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Newold1
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Re: 429 sbc ls build

Post by Newold1 » Wed Nov 14, 2018 7:28 pm

Slo-svt
You seem to be having fun keeping others guessing what you are really doing with your intake manifold and Z06 hood, so please do us all a favor and let us know now exactly what intake manifold you will be using and what Z06 hood configuration your vette will have for your new build.
The Older I Get, The Dumber I Get :wink:

steve316
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Re: 429 sbc ls build

Post by steve316 » Wed Nov 14, 2018 7:34 pm

I don't know if He's having fun but I hope so. Because that's why I do it, and when it's not, I won't do it. :)

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Re: 429 sbc ls build

Post by slo-svt » Wed Nov 14, 2018 7:43 pm

Newold1 wrote:
Wed Nov 14, 2018 7:28 pm
Slo-svt
You seem to be having fun keeping others guessing what you are really doing with your intake manifold and Z06 hood, so please do us all a favor and let us know now exactly what intake manifold you will be using and what Z06 hood configuration your vette will have for your new build.
Lets just forget its going in a z06. The engine is going on the engine dyno so what it fits in is irrelevant at this point. The original post stated I plan to test an msd intake, holley sniper, stock ls7 with factory controller. I also plan on purchasing a CID 4.0 manifold. The CID intake will likely run with a Carburetor and standalone ignition controller. This is mainly because I don't plan eat up an entire day (or week) trying to tune it with a drive by wire throttle body rigged to move a 4500 series throttle body. I already know its going to be a nightmare and don't intend to waste Joes time doing it on his engine dyno. The only person I can find with the same type of throttle/intake using a factory computer claims to have 60hrs in tuning it.
"I believe in the scientific method and one should have a healthy skepticism of things in general. From a scientific standpoint, you always look at thing probabilistically and not definitively."

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Rowdy Yates
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Re: 429 sbc ls build

Post by Rowdy Yates » Thu Nov 15, 2018 1:45 pm

Like your lifter choice wish they were around when I got the morel 6177 bushed lifters. Mr. Straub is a very cool and good guy. I may have to say your on your way to 800 with the Carb & CID intake. Newold1, if Eric Roycroft a friend can make 790 with 376 ci with 12.5 compression and rev to 8800, a 427 with higher compression would be a no brainer, it doesn't even need that amount of RPM to make the same hp. Tony Mamo did a 454 with a similar cam 250'ish with his TFS ls7 heads with less compression 12.5 MSD intake and made 760-770 with a solid roller. John did similar testing with intakes ....

https://ls1tech.com/forums/dynamometer- ... -rwhp.html

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Re: 429 sbc ls build

Post by Newold1 » Thu Nov 15, 2018 4:52 pm

Lets not totally forget your good old Z06. Why because that is what you indicated from day 1 in your post. That is the only reason I mentioned and posted you might have some issues trying to reach the 775-800HP levels you had indicated as your goal. I also read your indicated intake manifold choices and also commented that I did not believe you would be able to reach those levels on that engine build with those three intake manifolds fitted to your engine under the hood of your Z06. My comments were meant to get you do do all the investigation and study into what I was suggesting might be a problem.

Under your and a couple of others here snide remarks I wrote I would "EAT CROW" if my statement was wrong as a way of saying I AM NEVER AFRAID OF ADMITTING WHEN I AM WRONG" This is a situation now where I asked you to prove me wrong and achieve your goal "IN YOUR CAR!" Which you were quipping was not an issue or problem!

Now you come on and post you will only be dynoing the engine with a high spider CID carburetor manifold or some other carb manifold.

I totally understand that using a carb and intake on Joe's dyno is easier to accomplish and not an EFI tuning nightmare. Remember though at some time when you put that nice build in your Corvette you will have to go thru the timely and difficult ECM and engine tuning to make the car driveable for both street/strip use.

I have no doubt that an LS7 build as you are now undertaking with the parts and processes you are using can achieve 775-825HP especially when its fitted with an intake systems you are now listing. That was not my Statement. I was questioning how you could do that under the hood of a stock Z06 Corvette hood. Many shops and owners around the country have accomplished this many times so its not a new discovery!

Your total build at this point of DISCUSSION has become a bit of a moving target! You are changing the rules of "ME EATING CROW" and trying to discredit my knowledge and opinion in LSX engine builds as though you asked for opinions on this site in this post but don't want to hear anything that questions your knowledge, ideas and final result.

You need to bury your ego, continue on with a successful engine build and then get it to make the same or close horsepower in your Corvette as it does when dialed in on Joe's dyno with a different intake and fuel system. Pretty simple to do in your opinion, SO HAVE AT IT ! i AM GETTING HUNGRY FOR SOME OF THAT GOOD CROW! :wink:
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randy331
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Re: 429 sbc ls build

Post by randy331 » Thu Nov 15, 2018 11:19 pm

I'd throw that stock Z06 Corvette hood in the trash !

Seems it's been holding things back all thread long !!!

Randy

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Re: 429 sbc ls build

Post by steve316 » Fri Nov 16, 2018 10:10 am

It's all about the Aerodynamics.

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Re: 429 sbc ls build

Post by CGT » Fri Nov 16, 2018 10:58 am

body.jpg
maxresdefault.jpg
vfn%20corvette%20c5%20sunoco%20hood.jpg
Now that we have established the possibilities of things...….
You do not have the required permissions to view the files attached to this post.
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Newold1
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Re: 429 sbc ls build

Post by Newold1 » Fri Nov 16, 2018 1:53 pm

Of course a Z06 hood can be equipped for the taller intake it will take to get slo-svt's LS7 mod build up the levels he was originally propising. His original posting indicated three manifiolds that would fit under a stick hood so at that time I mentioned that I did not think he would get to his target without a better intake that could support those levels and the manifolds that would do not fit under a stick hood. He subsequently posted he would not be modifying the hood that as you have pictured here is doable. If he ultimately wants 775-825 in his Z06 with his build he will discover and hopefully find a solution.
Is one your pics his Corvette?
The Older I Get, The Dumber I Get :wink:

slo-svt
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Re: 429 sbc ls build

Post by slo-svt » Fri Nov 16, 2018 4:09 pm

Newold1 wrote:
Thu Nov 15, 2018 4:52 pm
Now you come on and post you will only be dynoing the engine with a high spider CID carburetor manifold or some other carb manifold.
slo-svt wrote:
Wed Nov 14, 2018 7:43 pm
Newold1 wrote:
Wed Nov 14, 2018 7:28 pm
You seem to be having fun keeping others guessing what you are really doing with your intake manifold and Z06 hood, so please do us all a favor and let us know now exactly what intake manifold you will be using and what Z06 hood configuration your vette will have for your new build.
Lets just forget its going in a z06. The engine is going on the engine dyno so what it fits in is irrelevant at this point. The original post stated I plan to test an msd intake, holley sniper, stock ls7 with factory controller. I also plan on purchasing a CID 4.0 manifold. The CID intake will likely run with a Carburetor and standalone ignition controller. This is mainly because I don't plan eat up an entire day (or week) trying to tune it with a drive by wire throttle body rigged to move a 4500 series throttle body. I already know its going to be a nightmare and don't intend to waste Joes time doing it on his engine dyno. The only person I can find with the same type of throttle/intake using a factory computer claims to have 60hrs in tuning it.
My first post just like the quoted post states I had 4 intakes in mind for the engine dyno. I do NOT plan on trying to use factory controller on the engine dyno WITH the CID manifold. I will use a carburetor and standalone ignition controller for that manifold only due to the extent of tuning that it will require. I will be testing all 4 intakes.
Newold1 wrote:
Fri Nov 16, 2018 1:53 pm
Of course a Z06 hood can be equipped for the taller intake it will take to get slo-svt's LS7 mod build up the levels he was originally propising. His original posting indicated three manifiolds that would fit under a stick hood so at that time I mentioned that I did not think he would get to his target without a better intake that could support those levels and the manifolds that would do not fit under a stick hood. He subsequently posted he would not be modifying the hood that as you have pictured here is doable. If he ultimately wants 775-825 in his Z06 with his build he will discover and hopefully find a solution.
Is one your pics his Corvette?
My original post mentions 4 INTAKE MANIFOLDS and doesn't mention being worried about hood clearance. My post where i stated "I can't possibly have a cowl hood on my corvette" was sarcasm aimed at you for bringing up the hood in the first place. Oldold its hard to bury my ego when you wont quit talking about my hood....Don't worry about the hood. The hood is not a concern of mine. I REPEAT I am NOT worried about the f**cking hood so please quit bringing it up. Thanks for you opinion we understand what you said and why you said it. You don't have to keep repeating it. We got it the first 5 times you said it...
"I believe in the scientific method and one should have a healthy skepticism of things in general. From a scientific standpoint, you always look at thing probabilistically and not definitively."

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Newold1
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Re: 429 sbc ls build

Post by Newold1 » Fri Nov 16, 2018 5:15 pm

Sorry I pissed you off! My apologies!

I am just a guy who pays attention to details! I don't play much with horseshoes or hand grenades!

Next time when you ask for input be a little more complete on your descriptions and specs.so those reading those and commenting can understand the total scope of your build.

As for SARCASM, loose that from your posts if you can as it may not be taken that way and just taken as actual.

Glad you now have an intake that will get you to your goal and will probably modify your hood to allow the necessary intake manifold.

Seriously, Best of Luck!

Let us all know your progress and ultimate result!
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Re: 429 sbc ls build

Post by af2 » Fri Nov 16, 2018 5:25 pm

randy331 wrote:
Thu Nov 15, 2018 11:19 pm
I'd throw that stock Z06 Corvette hood in the trash !

Seems it's been holding things back all thread long !!!

Randy
Ya no shit this Z06 hood is probably not going to be there!!
And the fact he said many time he didn't care!!
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Re: 429 sbc ls build

Post by SchmidtMotorWorks » Sat Nov 17, 2018 12:48 am

slo-svt wrote:
Wed Nov 14, 2018 7:43 pm
Newold1 wrote:
Wed Nov 14, 2018 7:28 pm
Slo-svt
You seem to be having fun keeping others guessing what you are really doing with your intake manifold and Z06 hood, so please do us all a favor and let us know now exactly what intake manifold you will be using and what Z06 hood configuration your vette will have for your new build.
Lets just forget its going in a z06. The engine is going on the engine dyno so what it fits in is irrelevant at this point. The original post stated I plan to test an msd intake, holley sniper, stock ls7 with factory controller. I also plan on purchasing a CID 4.0 manifold. The CID intake will likely run with a Carburetor and standalone ignition controller. This is mainly because I don't plan eat up an entire day (or week) trying to tune it with a drive by wire throttle body rigged to move a 4500 series throttle body. I already know its going to be a nightmare and don't intend to waste Joes time doing it on his engine dyno. The only person I can find with the same type of throttle/intake using a factory computer claims to have 60hrs in tuning it.
If I understand correctly, you already know this, but if you want to make the CID manifold work with 4500 EFI, it is going to be a lot easier with something like an AEM box.
That combo would be in a completely different class than the other manifolds listed power wise.
http://www.schmidtmotorworks.com Prototypes, Tooling, Molds.

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Re: 429 sbc ls build

Post by slo-svt » Sat Nov 17, 2018 5:14 pm

SchmidtMotorWorks wrote:
Sat Nov 17, 2018 12:48 am
slo-svt wrote:
Wed Nov 14, 2018 7:43 pm
Newold1 wrote:
Wed Nov 14, 2018 7:28 pm
Slo-svt
You seem to be having fun keeping others guessing what you are really doing with your intake manifold and Z06 hood, so please do us all a favor and let us know now exactly what intake manifold you will be using and what Z06 hood configuration your vette will have for your new build.
Lets just forget its going in a z06. The engine is going on the engine dyno so what it fits in is irrelevant at this point. The original post stated I plan to test an msd intake, holley sniper, stock ls7 with factory controller. I also plan on purchasing a CID 4.0 manifold. The CID intake will likely run with a Carburetor and standalone ignition controller. This is mainly because I don't plan eat up an entire day (or week) trying to tune it with a drive by wire throttle body rigged to move a 4500 series throttle body. I already know its going to be a nightmare and don't intend to waste Joes time doing it on his engine dyno. The only person I can find with the same type of throttle/intake using a factory computer claims to have 60hrs in tuning it.
If I understand correctly, you already know this, but if you want to make the CID manifold work with 4500 EFI, it is going to be a lot easier with something like an AEM box.
That combo would be in a completely different class than the other manifolds listed power wise.
Your likely not wrong about the standalone being easier but unfortunately that’s not in the budget. I believe I can make the stock computer work it will just take some time. There is a couple cars running with similar dbw combos. Here is a couple photos similar to what I have in mind
You do not have the required permissions to view the files attached to this post.
"I believe in the scientific method and one should have a healthy skepticism of things in general. From a scientific standpoint, you always look at thing probabilistically and not definitively."

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Re: 429 sbc ls build

Post by Newold1 » Sat Nov 17, 2018 7:02 pm

Don't envy the time and challenge you will face trying to get that GM ecm to control that beast of an LSX-7 you will be dropping in but I am sure you will not be the first or the last to try and make it work. You could make contact with some of the people at EFI University and DIY-, HPtuners or EFI live and see if they can give you some thoughts and experiences. No sense forging ahead alone.

That is a pretty cool looking drive by wire throttle control motor/set-up on CID -efi intake.
That intake will get you to the power levels you are looking for.

How is the idle control going to be managed and configured? Is the drive by wire motor also the GM drive/idle motor from a factory throttle body?

Pretty obvious though that that hood is gonna have the mumps with some bumps to fit that high rise setup under that hood!

Not sure that air cleaner shown will flow the CFMs that engine will want at 800+Hp. I guess a run on the dyno with your carb setup will make that determination.

Now it's pretty obvious that GM realized it was easier to get upwards towards those levels of power with the supercharger versus trying to do it with NA, and yes it fit under the hood!
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