ls2 intake for an ls1?

**Steve's LS1** · 05-08-2011, 08:55 PM

so i found this ls2 intake on ebay guy claims its a 90mm intake it has the cathedral style ports. will this work on my ls1? he says its a better upgrade than an ls6 intake is this so? could you help me out on this one? thanks...

**prater_1** · 05-08-2011, 09:00 PM

im pretty new to the ls engines but i think that the ls2 intakes have rectangle port!? BUT i could be wrong!!

**Steve's LS1** · 05-08-2011, 09:06 PM

Originally Posted by prater_1

im pretty new to the ls engines but i think that the ls2 intakes have rectangle port!? BUT i could be wrong!!

he's got pics of the intake, and they are cat. ports. and it takes a 4 bolt TB the Intake manifold PT# 12589181

**98maro** · 05-08-2011, 10:04 PM

i could be wrong....
i posted a thread before with the same question..
it is a 90mm but for what i was told the ls6 still flows better than the ls2 intake
and i dont if its matter but the TB on ls2s are electronic..
so finding a TB could be kida hard..idk thats just a guess

**TLS_Addict** · 05-09-2011, 06:58 AM

LS6 is better than LS2.....pretty much isnt the LS2 the same as the LS1 - EGR? Cant remember.....

**Steve's LS1** · 05-11-2011, 12:26 PM

Originally Posted by TLS_Addict

LS6 is better than LS2.....pretty much isnt the LS2 the same as the LS1 - EGR? Cant remember.....

it could be, i dont know. but thanks for telling me the ls6 is better, thats what im gonna go with.

**Steve's LS1** · 05-11-2011, 12:28 PM

Originally Posted by 98maro

i could be wrong....
i posted a thread before with the same question..
it is a 90mm but for what i was told the ls6 still flows better than the ls2 intake
and i dont if its matter but the TB on ls2s are electronic..
so finding a TB could be kida hard..idk thats just a guess

do you know what the ls6 mm is? and i found an adapter plate for an ls1 tb to an ls2 intake for $70 but im gonna go with the ls6 intake. if i could find one im my p.r.

**98TransAmWs-6** · 05-11-2011, 01:02 PM

Originally Posted by Steve's LS1

do you know what the ls6 mm is? and i found an adapter plate for an ls1 tb to an ls2 intake for $70 but im gonna go with the ls6 intake. if i could find one im my p.r.

ls6 is ~75mm

**Steve's LS1** · 05-11-2011, 07:18 PM

Originally Posted by 98TransAmWs-6

ls6 is ~75mm

thanks...

**c5z28** · 05-12-2011, 10:25 PM

Stock the ls-6 flows better. There is a company however that ports them to outlfow the ls-6 and flows just under a fast 90mm. I don't know the company name though.

**02transamce** · 05-12-2011, 10:36 PM

TPiS sells a ls6 intake with a 90mm snout.
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**88gtman** · 05-14-2011, 12:16 PM

According the the book I have called Dyno Proven LS1 performance. The LS2 only showed less than a 10hp gain at the crank. You are much better off getting an LS6, BBK, or FAST.