ok i posted awhile ago about an edelbrock intake that has the same specs as stock, like height, and was told that the one that would keep it like stock specs would only add 5 hp, well now i have headers so would it make more of a difference since headers get more air out quicker so it needs more to go in too.

if not r there any other intake mani's that r the same specs as stock but add more hp? i don't really know of any other than edelbrock.

 

I had already swapped in a 355 with full exhaust when I put my Edelbrock Performer EGR on. Little to no noticable gain. However, I had the factory aluminum intake, which I believe flows better than the older iron intake. I think the L69 came with the aluminum intake in 84, but if it didn't, the Edelbrock would be a worthwhile upgrade if emissions are mandatory.

 

anyone else have anything to add??

 

The intake, like everything else, needs to compliment "the package".

If using a stock cam, even with headers, the stock manifold will be fine. If upgrading the cam, you need to go with an intake manifold that has the same operating range.

In general, the Weiand Action+ will be more of a step up than the Performer, regardless of whether or not you have headers. In general, it's the RPM range, not flow, that sets one intake apart from another.

 

ok so basically i shouldn't look into an intake until i go with cams? other then that i shouldn't bother.

 

That's what I would recommend.

I had an intake gasket leaking coolant before I did my mods. As I was pulling the stock intake to fix that leak, I decided to go ahead and put on the new intake manifold, even though I wasn't ready to do the rest of the mods. I had run the car at the track the year before, and decided to take it back out once just to see what difference the intake made (the '57 had been down with tranny troubles the year I ran the Camaro, when I did this intake switch the '57 was back up and running). I went from a best of 16.85 with the stock intake to 16.80 with the GMPP intake. The other changes made between the regular runs and this one time with the new intake were: Old - 3.08 open rear, new - 2.93 posi; Old - 205/75x14 tires on the front, 265/50x15 on the rear, new - 225/60x14 tires all around.

The biggest difference I noticed was I could use regular gas again instead of mid-grade with 6 degrees advanced timing, because the EGR passages on the stock manifold were completely plugged up.