Different LT1 intakes?
Thread Starter
Team Owner
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Different LT1 intakes?
When I was looking at my 94 and my fathers 93 I thought I saw a difference in the inake. A few inches behind the throttle body on my 94 there is an angled ridge cut out of the top of the intake and a line runs there, on my fathers it doesnt exist.
What is the difference other than that and will a 92-93 intake work on a 94+ LT1? It probably bolts up the same but is it a "must" to have that tube that runs over the intake and what do you do if you dont have it?
Thanks!
What is the difference other than that and will a 92-93 intake work on a 94+ LT1? It probably bolts up the same but is it a "must" to have that tube that runs over the intake and what do you do if you dont have it?
Thanks!
Pro
Joined: Oct 2009
Posts: 679
Likes: 0
From: vero beach florida
92-93 are batch fires and 94-96 are sequential firing systems.
You could use a 94-96 on a 92-3, but not the other way around.
That tube is there to keep the pressure equal and might have other uses, not sure there.
You could use a 94-96 on a 92-3, but not the other way around.
That tube is there to keep the pressure equal and might have other uses, not sure there.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
the 92/3 intake actually flows (air) better than the 94-6, due to the internal restriction of the roof depression on the later manifold to allow that 'cut-out'...the 'tube' is for fuel transfer, a modified fuel feed would suffice, very highly modified LT1's feed each rail separately anyway to prevent injector starvation.
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
DisagreeInjectors don't know which manifold they are in... and computer doesn't know which intake or fuel rail is on the engine....
Mike
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
You just need the early fuel lines/rails (they are 1pc) from the 92-93 where the crossover line is at the rear of the intake.
Additionally the early lines/rails will fit on a 94 up intake manifold BUT the 94 up lines/rails will not fit on a 92-93 intake manifold.
Now I don't know if the lines on the car that connect to the intake manifolds lines/rails are different between early and late LTX C4's.... I do know the lines on the car are diffeent between F, Y and B Bodies.
Will
