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LS1/ LS2 intake power difference

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Old 07-31-2011, 12:44 AM   #1
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Default LS1/ LS2 intake power difference

SO I swapped the LS1 intake off my 98 LS1 for an LS2 with the 90mm throttle body. This was a 345hp vette crate engine. Anyone have any idea now what kind of power I can expect? Would the improvement be just in the top end or midrange? Thanks.
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Old 07-31-2011, 12:51 AM   #2
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Hmm, I wish I knew. You say it was from a 345HP Vette engine? The Vette was 345HP in LS1 form, the LS2 Vette makes 400HP.

From what my experience, the Vette has always had a better intake system and better exhaust system than the F-body cars. If I could take a guess, I'd say you'll see a 10HP gain, but no more than that.

I'm in Meridian right now, but I lived in South Bend Indiana for a long time, Indianapolis is a very nice city.
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Old 07-31-2011, 12:55 AM   #3
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I'd def say more than 10. An ls1 to ls6 is at least 15 Go on speed incs website I think they have something about their ls2 conversion or just search for it in here. There have been plenty of people testing it
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Old 07-31-2011, 01:46 AM   #4
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I would guess maybe about 10hp. You would see more gains with a LS6 intake with your stock 75mm TB over the LS2 intake and 90mm TB.
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Old 07-31-2011, 01:11 PM   #5
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LS2 intakes from what i understand dont flow that great. youre probably better off with an ls6 intake.
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Old 07-31-2011, 01:27 PM   #6
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Quote:
Originally Posted by babbage1109 View Post
I'd def say more than 10. An ls1 to ls6 is at least 15 Go on speed incs website I think they have something about their ls2 conversion or just search for it in here. There have been plenty of people testing it
LS1 to LS6 intake is 15? I don't think that's even close...
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Old 08-01-2011, 10:09 AM   #7
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Lol idk. It was late at night half asleep I didn't feel like going and finding it. Insomnia is a biatch
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Old 08-01-2011, 09:36 PM   #8
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Thanks for the replies, was out of town. This engine will never go over 4000 rpm so I guess torque is really what I am after rather than HP gains. Seems like the swap adds 10 to 15 hp then, but at higher rpms.
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Old 08-01-2011, 10:06 PM   #9
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Quote:
Originally Posted by WhiteKnight '01 View Post
LS1 to LS6 intake is 15? I don't think that's even close...
I would say 15 hp is pretty close, it really woke my car up nice after I did the swap. Very noticeable & IMO one of the best bolt ons for the money.
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