rbbTransAM

Hey guys, quick question. Will an Ls2 intake manifold or Ls3 intake manifold fit on an Ls1 with no issues?

lemons12

iTrader: (71)

Ls2 yes ls3 no..

westtexasbuff

iTrader: (40)

How would a rectangle port intake (LS3) fit cathedral port heads?

Like lemons said... LS2 yes, LS3 no. You would need rectangle port heads for the ls3 intake to work.

z28oc91

iTrader: (1)

does the ls2 intake have a lot of advantage over the ls1? or shoul i just wait till i find an ls6

lemons12

iTrader: (71)

The ls2 is better... Just wait for an ls6. You can buy them all day for 300$ and it will take you a long way. Port your tb at the same time.. will be a nice 10+rwhp gain with better throttle response.

z28oc91

iTrader: (1)

yeah ive been trying to find an ls6 to pick up locally around my area(nw suburbs of chicago) and yeah i already took out the tb to port! haha

does anyone know any good write ups for that i found one on here i thought but cant find it again?

lemons12

iTrader: (71)

https://ls1tech.com/forums/3916326-post22.html

https://ls1tech.com/forums/generatio...w-port-tb.html

Search.

z28oc91

iTrader: (1)

thanks!

lemons12

iTrader: (71)

Make sure you don't take away too much material around the blade... It will cause your car to idle high and bad = new TB.

rbbTransAM

How does the Ls2 work if the Ls3 does not? I was looking into them and they also have rectangle ports so whats the difference?

65SSZO6

iTrader: (4)

No LS2 intakes are cathdral port only. LS3 is rectangle port. I agree,find a LS6 intake P&P your throttle body and be done with it.

BOBS99SS

iTrader: (2)

Yeah ls6 is the best one to go with,p&p your tb is really easy did mine with a few different grits of sand paper and a dremel,also do the throttle stop while your at it so the blade will open more