plenum spacer

[forcefed3.8's]

I am considering a plenum spacer. Would it be worth doing with my combo? I plan on taking the engine to 6200 to 6300 next year. I have a Hemco upper and a fully welded and ported lower matched to a felpro 1200. I have no vacuum block. How high can I go, 1", 1 1/2"?

 

[Beamer]

I am very curious of what you Hemco looks like on the outside. I am thinking that is what I must have. See the pic below. I am running a 1" Champion spacer and I have a vacuum block. The vacuum block does impring into my hood pad. I would venture to say that if I have a Hemco and you are not running a vacuum block, you would be safe below the hood pad - maybe right on it.

Let me know if this is what yours looks like.

Mike

 

[2QUICK2B6]

hemco is smooth on top

 

[Beamer]

Not the stock appearing models. I have been reading and searching the board since posting on this thread. I thought my plenum was weird when I saw a square hold verses rectangular when I put the spacer in.

Additionally, I have a 70mm TB and they will not bolt up to a stock plenum. My up pipe is 3"OD and goes straight into the TB as seen in the pics.

Mike

 

[JDSfastGN]

Beamer that looks like a stocker to me...

 

[JDSfastGN]

nvm didnt look too hard lol

 

[forcefed3.8's]

I have a stock appearing Hemco, just like the one you have. So without a vacuum block, I might be able to get away with a 1.5". I might remove the insulator anyway.

 

[TurboBuRick]

I have a 1" spacer with no vacuum block on top. The up pipe is whats hard to get clear of the hood liner.

 

[ds4545]

Buy some silly putty or clay and put on top of your plenum, close and open your hood and measure the thickness of the clay. Worked for me.

 

[forcefed3.8's]

I thought someone was selling different height spacers?? I can only find 1" now.

 

[ds4545]

I bought a 1 1\2 champion spacer from Cotton.