guys im planing on goin faster just like the rest of us,so far i have only installed a flowmaster series 40 and a cold air intake KNK filter.

im gona install hooker headers long tubes next,but can i get a LT4 intake and use it with stock heads /engine? cam??

 

the ports on the LT4 intake will not match the ports on the LT1 heads.

 

You can port match an LT4 intake to match LT1 heads, but a stock LT4 intake will not work on LT1 heads.

 

But if you milled it down to match up with the LT1 heads, then you'd be negating any gains seen by the LT4 intake. The LT4 intake gains were seen via the raised intake runners creating a better transitional pathway for the incoming air. If you mill it down you simply have a nice red LT1 intake essentially.

 

Point being, its not worth it unless you have a set of LT4 heads with their raised runners.

 

It is a waste of money to try it without LT4 heads. Heck the LT4 intake doesnt even flow as well as a LT1 intake. Dont know the specifics but have been told by someone very good at this game.

 

DAM bad news! hehe.

well il see what i can upgrade next,il just install the headers next then,and then a 52mm trotle body.

 

I don't recommend you buy a 52mm throttle body. I did and didn't notice any power difference. Maybe if you were getting heads and cam later down the road then I might buy one. If I were you I would get gears instead.

 

Incorrect answer!

Misleading and inaccurate info!

Misleading and inaccurate info, especially to someone unfamiliar!
Mill what down? Cuz I am aware, what needs to be milled, I'll give you the benefit of the doubt, and trust you are referring to the top (external side) of the port. Fact is, there are no gains, from the LT4 intake, UNLESS you make use of the extra, as cast material, that was added to the LT4 intake, to raise the roof of the port. As far as the 'better transitional pathway' in concerned, that pathway, as it enters the port in the head, is compromised by changing the angle of the pathway, in the manifold.

Inaccurate info!
Fact is, internally, the two are IDENTICAL!! As far as specifics are concerned, I'm confident that 'someone', doesn't know what they are either.

I don't know where you guys get this bogus info from.

The one lone difference, between the two manifolds, is the extra, material added to the external side of the port roof, of the LT4 manifold. This extra, cast material, is what physically prevents the LT4 manifold from being a direct bolt on, to LT1 heads. As noted above, this extra (as cast) material, also ALLOWS one to raise the internal roof of the port. However, in doing so, also noted aove, the angle of the flow path, to the port in the head, will be altered.

Also, IF you did not intend to alter (raise) the ports of the manifold, you could bolt on (a late) LT1 manifold, to a set of LT4 heads, without the engine ever knowing it, and without you ever feeling, or noticing any difference. However, if you chose to use an early (92-95) manifold, you'd probably notice a diff, but, for the worse, unless head ports were ported, cuz the ports, in the early manifold, are actually larger (causing a mismatch), than the ports, in the LT4 manifold. How 'bout that?

 

LoL @ Arnie. Thanks for posting that, you saved me from finding one of your old posts and quoting you.

I can't stand heresay. Because 90% of the time the information is inaccurate.

 

Oh, yeah? I heard it was more like 95%.