3rdgengmachine

I have noticed there are 2 different types of plenum's I have the one with the triangle on the bottom, and am currently running the stock throttle body, and was wondering if I can port it out like they do on the one without the triangle and still use my stock throttle body. Here are some pics of what Im talking about. And if anyone has a pic of the triangle type ported out to max post it or e-mail it to me so I can see what to do. Thanks..

battman

iTrader: (2)

Yes, you can port it just the same, I can post a pic of mine ported this afternoon if you like.

3rdgengmachine

Yes, plese post the pic I would very much appriciate it!!! Im guessing yours is the type with the triangle and, I can run the stock throttle body after porting it out to max? Im going to get the largest I can (It's going to be a 386 stroker when Im done) when money permits but I have to stick with stock for now. And agin super thanks for quick reply and the pic's that will help alot!!!!!!

vetteoz

iTrader: (13)

Cutting the center part out as shown has no effect ; only did on mine because someone had already started cutting on the plenum I bought.
Once the two holes are out to 58mm there is no more benefit to be had

vetteoz

iTrader: (13)

Makes no difference; ran both stock and 58mm on mine

IROC_U

wont do you a lot of good to port it if your not gonna put a larger throttle body on imo

1tpi

Shadygrady

iTrader: (3)

It does help to port it with a stock TB.You really dont need a larger tb yntil you have the rest of the intake upgraded.Large tb would be one of the last things I`d do.Money could be better spent on something that would benifit you.Go ahead and port it and keep the stock tb untill you really need a bigger one.The RamJet 502 makes 502hp through a stock 48 mm tb.Good enough for me.

check this out https://www.thirdgen.org/forums/tpi/...bk-tb-one.html

vetteoz

iTrader: (13)

Wrong again
The EGR humps in the bottom of the plenum behind the TB entry are a BIG restriction even when running a stock 48mm.
If you are going to be in there playing around you may as well take it out to 58mm so you don't have to do it later

3rdgengmachine

Yea that was what I did take out the egr shrouds and I am going to put the 58mm tb on later but was mainly just making shur I can do my plenum and not have to buy another one. I already polished it to mirror(found how to do that in the tech section here and after I was done probly one of the most satisfide I have ever been with any cleaning upgrade I done I LOVE IT and HIGHLY RECCOMEND everyone try it) and would have hated to have to buy another. But thanks everyone I will problu just wait till I get the 58 or 52 and stroke it to 386 till I do any more since I have already removed the egr shrouds.THANKS AGAIN!!!!!!!!

battman

iTrader: (2)

Here is mine with the EGR walls knocked down, and one without for reference.

3rdgengmachine

yea thats the way I done mine when I had it apart. Thanks

stroked_n_blown

iTrader: (3)

That Jantzer Performance in the top pic did a real nice job smoothing outthe one on the left. Hope I can get mine looking that good.