C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Mod LT1 or HSR?

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Old May 13, 2011 | 10:35 AM
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Default Mod LT1 or HSR?

Probably going to stir up a debate here but here goes:

Currently in the process of breaking in my 385 and mseven is doing the tune. I currently have an LT1 intake that I modded on there and it is running fine (I know I can't leave anything alone). I happened across a HSR locally and could not pass it up. I read all the threads about modifying them to fit under the hood but I really like the L88 scoop (being delivered tomorrow via FedEx).

What should I expect in performance difference?

It is going on either way, just wondering everyone's preference.
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Old May 13, 2011 | 10:42 AM
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Good question actually,, I'm not sure there would be much of a difference myself.
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Old May 13, 2011 | 10:43 AM
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Keep what you got.
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Old May 13, 2011 | 11:18 AM
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Unless you've got a setup where the HSR will fit w/o modification, don't bother. The difference would likely disappoint you. Look at the article "Ten Times the Torque" to see how much difference in TQ their would be at any given rpm. Where less than 20ft/lbs, you'd probably need a dyno to detect it.
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Old May 13, 2011 | 12:36 PM
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I think you should run the HSR. On my engine the HSR was stronger then the modified LT1 intake everywhere. It will not disappoint you.
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Old May 13, 2011 | 12:38 PM
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Well, hell, guys. I knew I was questioning myself for a reason and I trust your judgements. Would it hurt my performance?

I guess I'll just hang onto it for now. I hate to admit it, but I love the scoop and I'm going to bond/blend it on so I'll have the room. I dont like having a scoop and nothing to actually be under it, though.

Maybe put the HSR on when I get bored of the current configuration. I'm sure it will happen - probably sooner rather than later.
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Old May 13, 2011 | 02:24 PM
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Originally Posted by bjankuski
I think you should run the HSR. On my engine the HSR was stronger then the modified LT1 intake everywhere. It will not disappoint you.
I guess it depends on how the modified LT intake compares to the MR. In that TTTT dyno comparison (mentioned above), there is only 100 rpms difference between the MR and the HSR peak values. And, the HP/TQ differences were basically neglible.
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Old May 13, 2011 | 03:13 PM
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Originally Posted by LD85
Good question actually,, I'm not sure there would be much of a difference myself.
I tend to agree. Personally I like the HSR, since I do have one. Very easy to work on.

If you have the room for a unmodified HSR, I say go for it. Your not going to loose any performance.
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