SStrokerAce, update on LT1 intake?
Registered User
Joined: Oct 2002
Posts: 2,931
From: Upstate NY
I've been watching this project progress the last few weeks. IMO, it's really looking good (as well as functional). I'm thinking about the same thing for my Impala SS, but I haven't asked Bret yet...well, maybe I just did.
Let's see, it's going to be the color of the liquor Hypnotiq isn't it, Ken?
Hypnotiq
Let's see, it's going to be the color of the liquor Hypnotiq isn't it, Ken?
Hypnotiq
Advanced Tech Moderator
Joined: Aug 2001
Posts: 2,262
From: Nashville
Originally posted by OldSStroker
Let's see, it's going to be the color of the liquor Hypnotiq isn't it, Ken?
Hypnotiq
Let's see, it's going to be the color of the liquor Hypnotiq isn't it, Ken?
Hypnotiq
And i've already had requests to have this thread moved. So on it's way it goes to LT1 Tech...
Registered User
Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
Screw the intake, I'll take that Hypnotiq cognac/vodka stuff! Looks good.
Oh, yeah... can't wait to see the intake either.
And those are lilacs Ken, although your frog might like a lilly better.
-Mindgame
Oh, yeah... can't wait to see the intake either.
And those are lilacs Ken, although your frog might like a lilly better.
-Mindgame
Registered User
Joined: Jul 2003
Posts: 2,945
From: Fort Benning, GA
How is this going to compare to Squinn's custom LTX Intake ? Some pics would be nice
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Joined: Aug 2001
Posts: 2,262
From: Nashville
Originally posted by Spinner
How is this going to compare to Squinn's custom LTX Intake ? Some pics would be nice
How is this going to compare to Squinn's custom LTX Intake ? Some pics would be nice
Registered User
Joined: Dec 1999
Posts: 2,248
From: Houston, TX
Originally posted by kmook
Blah I gave up on proper spelling a while ago
Well hopefully Bret can get that little puppy finished soon and have a nice completed picture to put up on the net for people to see.
Blah I gave up on proper spelling a while ago
Well hopefully Bret can get that little puppy finished soon and have a nice completed picture to put up on the net for people to see.
. I have done my buying/selling duties...time to break the habit and start playing
.Ryan
Banned
Joined: Oct 2002
Posts: 6,518
Well I am making the fule rail brackets today, just came up with the design. OldSStroker has been helping out with some of the things on it.
I have a few little external things to do on the intake and some blending work on the plenum and it's almost done. It's a lot more labor intensive than I planned but from the feed back I have gotten so far on the rought version of it it's looking good.
I'm not going to let any pics out of it until I have it completed. Then Ken will get his and he can get his tuning done so we should know some results. The next one is already in the shop but I have some things to get done before that one goes on anything. It's going to end up on a higher port head al la LT4/AFR and a 383 for testing later on. We will have the head/cam stock bottom results from Ken's setup before I have anything on the 383 setup.
Bret
I have a few little external things to do on the intake and some blending work on the plenum and it's almost done. It's a lot more labor intensive than I planned but from the feed back I have gotten so far on the rought version of it it's looking good.
I'm not going to let any pics out of it until I have it completed. Then Ken will get his and he can get his tuning done so we should know some results. The next one is already in the shop but I have some things to get done before that one goes on anything. It's going to end up on a higher port head al la LT4/AFR and a 383 for testing later on. We will have the head/cam stock bottom results from Ken's setup before I have anything on the 383 setup.
Bret
Registered User
Joined: Jul 2002
Posts: 659
From: North, SC, USA
Are the stock intakes restrictive?
There nothing there, so I didn't know if anyone had done any testing on them.
On my desktop dyno, there is a world of difference between the single plain intake and the tuned port intake, so I didn't know which category our intake belonged in.
Tuned port sucked by the way.
D Moss
There nothing there, so I didn't know if anyone had done any testing on them.
On my desktop dyno, there is a world of difference between the single plain intake and the tuned port intake, so I didn't know which category our intake belonged in.
Tuned port sucked by the way.
D Moss
Banned
Joined: Oct 2002
Posts: 6,518
Moss,
The LT1 intake lacks in what is called intake pulse tuning in the RPM range we run them in. Intake pusle tuning is basically physics at work making fake boost at certain RPM and cramming more air/fuel into the cylinder therefore making more power. You can see up to 5-7psi extra so in essence it's like a blower. If you ever wonder why a 500cu in Pro Stock motor makes 1350hp on gas and carbs with no extra help it's because they make very good use of this "faux boost". In fact F1, MotoGP, NASCAR motors which all have very high Volumetric Efficiency use this intake pulse tuining to their advantage. For a definition of Vol Eff go here http://www.auto-ware.com/combust_bytes/eng_sci.htm
Here is some more stuff on VE http://www.epi-eng.com/ET-VolEff.htm
A quote from that is what we are tring to shoot for here:
"For contemporary naturally-aspirated, two-valve-per-cylinder, pushrod engine technology, a VE over 95% is excellent, and 100% is achievable, but quite difficult. Only the best of the best can exceed 110%, and that is by means of extremely specialized development of the complex system comprised of the intake passages, combustion chambers, exhaust passages and valve system components."
This is how a Nextel Cup motor with 358cubes and a flat tappet cam can make more TQ than most 383 LT1's. 540ft lbs and they are tring to build HP with those motors. On top of that they are restricted to certain intake sizes due to rules on the intake manifold castings they can use.
Bret
The LT1 intake lacks in what is called intake pulse tuning in the RPM range we run them in. Intake pusle tuning is basically physics at work making fake boost at certain RPM and cramming more air/fuel into the cylinder therefore making more power. You can see up to 5-7psi extra so in essence it's like a blower. If you ever wonder why a 500cu in Pro Stock motor makes 1350hp on gas and carbs with no extra help it's because they make very good use of this "faux boost". In fact F1, MotoGP, NASCAR motors which all have very high Volumetric Efficiency use this intake pulse tuining to their advantage. For a definition of Vol Eff go here http://www.auto-ware.com/combust_bytes/eng_sci.htm
Here is some more stuff on VE http://www.epi-eng.com/ET-VolEff.htm
A quote from that is what we are tring to shoot for here:
"For contemporary naturally-aspirated, two-valve-per-cylinder, pushrod engine technology, a VE over 95% is excellent, and 100% is achievable, but quite difficult. Only the best of the best can exceed 110%, and that is by means of extremely specialized development of the complex system comprised of the intake passages, combustion chambers, exhaust passages and valve system components."
This is how a Nextel Cup motor with 358cubes and a flat tappet cam can make more TQ than most 383 LT1's. 540ft lbs and they are tring to build HP with those motors. On top of that they are restricted to certain intake sizes due to rules on the intake manifold castings they can use.
Bret