LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Is a Single Plain Intake Streetable?

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Old Jun 21, 2006 | 02:51 PM
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Default Is a Single Plain Intake Streetable?

Well im at the point of ditching the LT1 intake and getting a Single Plain.

I think Bret Bauer can do the Fuel Rails and Lines Conversion on them but im not sure.

I guess my question is, do you think I can get a good tune and run a SP on the street? Im shooting for 14-16mpg.

Thanks.
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Old Jun 21, 2006 | 03:24 PM
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If you get an elbow from www.intakeelbows.com that will allow you to run your stock style 58mm T-body then yes. This way you keep the same IAC, TPS, Throttle cable,....etc. Also the tip-in will be much slower than if you do a Accufab 90mm. I am speaking if you keep the stock PCM. If you go with a standalone like FAST XFI....etc...then it will not matter.

This is the one.

Last edited by Tony Shepherd; Jun 21, 2006 at 04:27 PM.
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Old Jun 21, 2006 | 03:57 PM
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Tony,are you using that one? I know you were supposed to go with the stock PCM but saw you changed your mind or whatever. How much did that piece cost? Did you run yours with it much?Later Clint
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Old Jun 21, 2006 | 04:02 PM
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Originally Posted by T/ALT1
Tony,are you using that one? I know you were supposed to go with the stock PCM but saw you changed your mind or whatever. How much did that piece cost? Did you run yours with it much?Later Clint

No Clint I wish I would have gone with that elbow but it was not available when I did my conversion. I went with the Accufab 90mm T-body and the PTE 100 degree elbow. With the stock PCM the tip-in part throttle tuning was impossible to tune. That is one of the main reasons I ditched the stock PCM along with needing to rev past the 7200 rpm mark. If he can still use the stock style (58mm) T-body then it will tune fine with the stock PCM.
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Old Jun 21, 2006 | 04:17 PM
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It's something I have been looking into and the 90mm T.B, was biggest problem but since you can buy those I may look into to going with a Victor E with the bungs already built in. I only plan on turning mine 6800 or so with the hydro roller setup. Thanks Later Clint
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Old Jun 21, 2006 | 05:40 PM
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Originally Posted by Tony Shepherd
If you get an elbow from www.intakeelbows.com that will allow you to run your stock style 58mm T-body then yes. This way you keep the same IAC, TPS, Throttle cable,....etc. Also the tip-in will be much slower than if you do a Accufab 90mm. I am speaking if you keep the stock PCM. If you go with a standalone like FAST XFI....etc...then it will not matter.

This is the one.

Man that is P.I.M.P.! I might have to look into the E-vikta. You get your **** back on the dyno yet??? Lemme know when you do.


P
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Old Jun 21, 2006 | 07:07 PM
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Bret can help you with a single plane conversion if you do go that route. People do not give the stock manifold enough credit though and are too fast to drop a few grand to replace it.

Far as fuel economy a single plane matter with a carb because it is wet flow with injection it wont matter one bit.
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Old Jun 21, 2006 | 07:42 PM
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Originally Posted by O Holy P
Man that is P.I.M.P.! I might have to look into the E-vikta. You get your **** back on the dyno yet??? Lemme know when you do.


P

Should be dynoing soon. Ill keep you posted.
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Old Jun 21, 2006 | 07:48 PM
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Originally Posted by 96capricemgr
Bret can help you with a single plane conversion if you do go that route. People do not give the stock manifold enough credit though and are too fast to drop a few grand to replace it.
Well....if you have big cubes, solid roller, and plan on spinning motor past 6800.....the single plane is the right choice. A stock intake can only flow around 280 cfm per fully ported runner. Not to mention the lack of plenum volume. If you install a set of high flowing heads (290+ cfm) and then slap on a stock intake....you are starving the motor.

With that said........a lower cubic inch motor with stage 1-2 heads and medium size hydraulic cam would not benifit as much going with a single plane. Now it would not hurt anything either. Just my .02
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Old Jun 21, 2006 | 07:56 PM
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Originally Posted by Tony Shepherd
Well....if you have big cubes, solid roller, and plan on spinning motor past 6800.....the single plane is the right choice. A stock intake can only flow around 280 cfm per fully ported runner. Not to mention the lack of plenum volume. If you install a set of high flowing heads (290+ cfm) and then slap on a stock intake....you are starving the motor.

With that said........a lower cubic inch motor with stage 1-2 heads and medium size hydraulic cam would not benifit as much going with a single plane. Now it would not hurt anything either. Just my .02

Be cool to see even on a stock short block car, some of the heads/cam cars running now are making some great power, given 280CFM that would mean on an agresive heads/cam car with well worked heads, LE3, etc the LT1 intake would kinda be right on the edge.
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Old Jun 21, 2006 | 08:01 PM
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I made a thread not to long ago about the same thing. Glad everyone talked me out of it. For the money and time spent it's not worth it on the average application.
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Old Jun 21, 2006 | 08:16 PM
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Originally Posted by BizZzatch350
Be cool to see even on a stock short block car, some of the heads/cam cars running now are making some great power, given 280CFM that would mean on an agresive heads/cam car with well worked heads, LE3, etc the LT1 intake would kinda be right on the edge.

I was thinking the same thing I wish someone with a stock shortblock or 355 would do the conversion and post up the net results.
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Old Jun 21, 2006 | 10:43 PM
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Isnt a Vic Jr and conversion only like $400-$500?


And as for tuning it on the stock PCM how well do you think i can tune it?

I will be using

TunerProRT and othe the complementing stuff to burn my own chips.

But....can the stock PCM handle ma Pow3rz?

Last edited by Speed Density; Jun 21, 2006 at 10:50 PM.
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Old Jun 22, 2006 | 06:10 AM
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The total price to go with that intake will be in the $1000+ range. I thought you had to spin the motor above what the obd1 could handle anyway?..
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Old Jun 22, 2006 | 07:16 AM
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The 93 pcm will allow a little more rpms than the OBD1 so he should benifit a little on that. Problem he will have is with drivability. You will have to play with your VE tables to dial it in. It will be tunable but it will be hard for a rookie tuner.
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Old Jun 22, 2006 | 08:28 AM
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That Victor E intake needs to much dam work and the bastard is heavy too, A Super Vic comes in all shapes and sizes and works much better than other intakes as a place to start from.

Bret
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Old Jun 22, 2006 | 01:39 PM
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We ran the victer e and the speed pro FAST system needed to add 10% more fuel over the lt1 intake so it does flow fairly well,Now we are porting the victor e to see how much more fuel it'll require,We also ditched the opti and went with a distrib. becuase the opti wont go over 6800..I should have it togetether next week and then we're going back to the track to hit it with a single stage 150 dry,looking for low 10's
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Old Jun 22, 2006 | 03:18 PM
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I'm comparing the Vic E to every other single plane I have used. A ported Super Vic to fit the application is a much better intake than a Vic E. A Vic E is a better intake than a LT intake as well. It's all relative.

Bret
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Old Jun 22, 2006 | 04:57 PM
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Totally agree,but for this car it should be fine once ported..
I really wanna go 2 stage on the nos but its an old FAST box and I'm not sure if we can upgrade to 2 stages..I'll be talking to Dale tomorrow to see if Lance can do it for us..
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Old Jun 22, 2006 | 04:57 PM
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Originally Posted by SStrokerAce
A ported Super Vic to fit the application is a much better intake than a Vic E. A Vic E is a better intake than a LT intake as well. It's all relative.

Bret
Exactly, I personally want to use a custom ported SuperVic, elbow & 90mm TB with a F.A.S.T. pcm this fall or winter, but am anxious to see what my new setup does first so I can baseline the gains...oh yeah this would also be another crazy head change from these crazy heads...this sure is an expensive damn hobby
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