hello all

i wil make a dual air plenum under the hood of a iroc-z.

i have the stock hood with louveres.
the engine is a 350 with edelbrock performance rpm intake
and a holley 4160 double pumper.

i will know if i had enough hood clearance with my stock hood and this setup to fit a dual air plenum with a high of 3,5 inch

i was thinking on the 90* from spectre.

has anyone some nice pictures of instaled setups??

Thanks Dennis

 

I believe the answer is "no, it won't fit under a stock hood".

I have a single on the '57, which I intend to pop off and check on the Camaro (don't have the Holley on right now, though).

The low profile version should fit with no problem, though. But, it's only available in 180 degree type, I believe.

Have you considered their dual inlet air box? 2.4" height, flows over 1200 CFM, much less expensive than the Ramairbox kits. Even the single snorkel unit flows 975 CFM.

 

okey so your not sure if it wil fit or not!

the reason i will take a duel plenum is that i like my new holley carb,it looks so racey!
and everybody hase a normal looking airfilter under the hood and i will some different than other people.

my idee was to move the battery to the trunk to make some clearance for the dual pipes with open airfilters.

it would be nice if you can look for me for the clearance of the hood!

dennis

 

need some more info please!!

wil it fit or not?

or which filter must i take if the dual plenum not fit?

i was thinking of the K&N extreme but which size??

 

The standard height hat will not fit. About an inch taller than my dual snorkel, which puts the lid nut into the hood blanket. With the hat on, the hood was about 3" from closing.

The low profile version should fit without a problem.

 

do you now where i can get the low profile version?

or i was thinking of buy one of the 3.5 inch high plenum
and cut about 0.5 inch on the underside of the plenum so the high go`s to 3 inch!

look at the link and the pictures of the details!!

http://www.spectreperformance.com/#CATALOG.9859

 

I find what I'm looking for on the spectreperformance.com site, then search for the part number on summitracing.com.

For instance, the low profile dual plenum "hat" is part number 98599, $136.39 on Summit's site. The 120 degree low profile sheet metal plenum is 9824, $121.99 on summitracing.com.

 

is there someone here on thirdgen.org who has installed them on the car?

so i can see how it looks!

 

I don't recall having seen anyone post a picture of one, but I could have missed it.

You might want to go through this thread https://www.thirdgen.org/forums/carb...rbd-motor.html .

But, when I put the single hat on the '57 this past spring, I had never heard of anyone who had discussed them on the Board.

 

I take that back.

Look at posts 689 - 697 (posted after I put mine on).

 

what did you mean with

posts 689 - 697

dennis

 

Click on the link I posted above.

For every member's post, there is a black line above the text. On the right side of that line is the post number.

If you are set up for 50 posts per page, posts number 689 through 697 will be on page 14.

 

okey thanks

i have looked at them all!
they look nice,but no duals out there! hmmmz

schould it work if i cut 0,5 inch of the dual plenum thing?

is here nobody who`s now how much hoodclearance there is with that setup?

how high is that air claener on post 689?

dennis

 

No, you can't cut it down. You'd lose the sealing surface to the carb.

84 Kamp311 isn't very active. You might want to try sending him a PM. Looks like the Spectre 2.5" unit, though.

 

I tried the non low profile dual plenum on my car w/ the stock flat hood, and it was a no go.

Intake was a Holley Street Dominator (older version from the 70's) and an Edelbrock 650 AVS.

The outlets on the plenum were too high in front of the engine, as well as the bonnet itself if I turned it around.

 

thanks thats the ecxact answer that i looking for!

i wil try maybe the low profile dual plenum its about 2,4 inch high!

dennis

 

Fantastic! Be sure to let us know how it works out....and post some pictures if you can!

 

okey i`ll do that wen i finish my engine!
i think over a few weeks it`s ready for pictures.

dennis

 

hello all

i just buyes the low profile from spectre on ebay!
now i must waiting for it!
wen it is here and i fix it on my engine i post some more pictures!

dennis

 

hello all,

i`v got the duel plenum now and it fit great and really looking great.
it`s like a big muscle now. enjoy

you can see that the clearance for the hood is there!!!

 

nice set up! i think this just gave me an idea for my car. but a lil different maybe. so it fits with your stock hood?

i was thinking if this set up would fit under a stock hood but with a air gap intake if what i have tho.

 

The carb doesn't sit any higher on an Air Gap intake than it does on the non-Air Gap version of the same intake.

 

Looks fantastic! How does it feel compared to before- were you running an open element before?

 

will i think i might have to use a spacer for that vacuum port right behind where the carb sits so i think im still screwed. lol

any advice?

 

the engine is still not ready to fire it up.
i wait on a new distributor,and must finish some things before i fire it up.

dennis

 

hey dennis,
this got me thinking of using a set up very similar a lil diff tho.i wanna build one with the single one im thinking?? but i have a question that i know is not the topic.

how much feet of steel braided hose did you use from your dual fuel line from carb. to regulator? and how much did you use from the regulator to the fuel line? sorry for goig off topic and thanx

 

hi , thanks for the comments.
pfff i don`t know ecxactley how much braided hose i have use for it
i have orded 2 mtr total of it and i have about 30 or 20 cm left of it

so if you do it my way u need 2 mtr that`s enough for it.

 

You can just plug that vacuum spot on the intake and drill an tap one farther back on the runner.

 

so dennis, did you ever get the car running. and how is the dual plenum working with it?

 

hey antsZRS : yes the engine is running and have a masive sound with the dual plenum. you can hear the air through the filters.

 

Ban unless a video is posted : )

I bet the car as a whole sounds bad ***.....your build looks ultra clean and well planned Dennis

 

hahaahha thanks for the comments i will try to make a short video of it.

dennis