LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

383 reliability/output/Lingenfelter

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Old 12-17-2004 | 03:49 PM
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mustangmuncher's Avatar
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383 reliability/output/Lingenfelter

Maybe I will get some feedback on this one. Lingenfelters 383 package puts down 440hp/430tq (in his book it puts 425hp and 470 tq to the wheels), with a 2 year warrenty through stock exhaust manifolds. I want to mimic it, starting out with just ported heads/cam, I plan on going with something like this:

Scat cast 3.75" crank
Scat 6.000" h-beam rods
SRP 5cc dish pistons
JE piston rings
clevite bearings
LPE 219/219 cam
Lloyd Elliot heads (2.02/1.60 valves)
1.6 RR
Superram Intake Manifold
SLP shortys
random tech y-pipe
etc..

The catch is, Lingenfelter got it to pass emissions, and I want to do the same. If it doesn't pass emissions, I can always get collector plates . I plan on starting with the heads/cam/exhaust, then work up to the 383 later. It wouldn't see high revs, somewhere around stock rpms, and I figure with the right people with the right experience, it would last while as well. Does anyone see any problems with it? Price for parts should be around 5 grand including torque converter etc.. The Superram being the most expensive parts. Any opinions? Also there will not be any power adders. Help me please

-Eric
Old 12-17-2004 | 05:55 PM
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Re: 383 reliability/output/Lingenfelter

Do they still make the Superram for the LT1? Following John Lingenfelter is never a bad idea and the super ram should make monstor TQ but will sacrifice some RPM capability and some peak HP. It all a compromise depending on what you want to acomplish. I would be very interested in your results with the SR so if you do build it please post often. BTW you may wan't to talk to this guy, he ran a Lingenfelter 383 for years with no problems, While it's not an LT1 it may help you get an idea of the reliability of a LPE package. http://forums.corvetteforum.com/member.php?userid=8220

Last edited by ejfagala; 12-17-2004 at 05:58 PM.
Old 12-17-2004 | 08:28 PM
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Re: 383 reliability/output/Lingenfelter

Passing emissions should not be a problem with that 211/219 cam. The LPE package does not use the Super Ram, it uses a ported stock LT1 intake manifold. Also it is rated with 1 5/8" headers, not stock manifolds.
Old 12-17-2004 | 08:52 PM
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Re: 383 reliability/output/Lingenfelter

They did make a 383 LT1 superram package at one time there is a picture of one in my corvette fuel injection book by charles probst. I believe you are right in the fact it is no longer offered and LPE's std LT1 383 package no longer is offered with the SuperRam but I thought I would mention the fact that it did exist. I have been curios about how this intake would perform on a 383/396 LT1 and would love to see someone actualy try it.

Here is a link to the LPE LT1 SuperRam http://www.lingenfelter.com/lingenfe...id=16&pf_id=41
Old 12-18-2004 | 12:30 AM
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Re: 383 reliability/output/Lingenfelter

I run the LPE 219/219 cam and passed emissions with no problem in IL. IL does a roller test with sniffer.
Old 12-18-2004 | 08:43 AM
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Re: 383 reliability/output/Lingenfelter

I'm the 2nd owner of a 1995 Formula with an LPE 383 that myself and the original owner have been daily driving and racing for 10 years. I can attest to their quality, drivability, and durability since 1995. The car runs consistent high 11's on BFG DRs mpg varying from 115 to 118ish depending on the weather. If I would do a 12 bolt and slicks/ET Streets I'm sure mid 11s would be possible.

For emissions, I'm fully compliant right down to the air fittings and CAT. I use LPE 1 3/4" stainless shorties. Random Y pipe w/ CAT, and Borla CAT back run wide open with no plates....Always passed when the car was in MD...

I am sending the car back to them in Feb/March to go with the Super ram 219/219 cam package and a freshening of the heads/valve springs/compression/leakdown test, etc. After 10 years its time for an upgrade. Ed at LPE told me that they just did an LT1 Corvette with this set up and it pulled 415rwhp and 435 rwtq. Thats 35 more rwtq than I currently have!!! The beauty of their stuff is that you don't have to wind it to the moon the make power. I'll let you guys know what happens.....
--Alan
Old 12-18-2004 | 09:41 AM
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Re: 383 reliability/output/Lingenfelter

Originally Posted by ABA383
I am sending the car back to them in Feb/March to go with the Super ram 219/219 cam package and a freshening of the heads/valve springs/compression/leakdown test, etc. After 10 years its time for an upgrade. Ed at LPE told me that they just did an LT1 Corvette with this set up and it pulled 415rwhp and 435 rwtq. Thats 35 more rwtq than I currently have!!! The beauty of their stuff is that you don't have to wind it to the moon the make power. I'll let you guys know what happens.....
--Alan

Please keep us up to date, I am very interested in your results. The biggest Draw back to the Super ram to me is it is one of the biggest PIA's intakes ever built to R&R but how often do we pull the intake. I built my motor to have as much TQ as HP and think I have done that and my power peaks at 6K but I would be interested to see if I could get even more TQ at a lower RPM with similar HP #s and better fuel economy.
Old 12-18-2004 | 10:49 AM
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Re: 383 reliability/output/Lingenfelter

Originally Posted by Bud M
Passing emissions should not be a problem with that 211/219 cam. The LPE package does not use the Super Ram, it uses a ported stock LT1 intake manifold. Also it is rated with 1 5/8" headers, not stock manifolds.
Bud, when I bought my LPE 383, the automatic version did come with the Super Ram intake (manual used a stock manifold), and it was rated with stock exhaust manifolds...

Dave
Old 12-18-2004 | 03:01 PM
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Re: 383 reliability/output/Lingenfelter

I'll keep everyone posted...Also , please remember John and his family on Christmas as it marks the anninversary of his death. He was a pioneer and a major influence in our "sport." Not only was he the builder of incredible engines, he was one hell of a nice, humble guy. He's the epitome of "speak softly and ..." you know....
--Alan
Old 01-12-2005 | 09:39 AM
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Re: 383 reliability/output/Lingenfelter...UPDATE

Well, I got all pricing back from LPE and having LPE do the Super ram swap is too cost prohibitive. They want over $2800 to do the change including all port work, etc. not including the 219 cam! I love LPEs stuff but thats too much for this poor public servant. Anyway, sorry, I was going to be the guinea pig for the Super ram 219/219 cam LT1 383 set up, but it's just too much.

Enter PLAN B: Chassis dyno before any work is done. Then, cam swap from LPE 211/219 .530/.560 to LPE 219/219 .560/.560 (still love little cams) on the stock LPE ported intake, new timing chain, springs, seals, new dyno tune all done locally by F-Body Central in MD.
--Alan
Old 01-12-2005 | 08:56 PM
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Re: 383 reliability/output/Lingenfelter

Originally Posted by LPEdave
Bud, when I bought my LPE 383, the automatic version did come with the Super Ram intake (manual used a stock manifold), and it was rated with stock exhaust manifolds...

Dave
Interesting. I was basing my comment on the info in their catalog. No mention of an intake manifold swap.
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