I have 99 360 with about 120k on it. It does the usual crap i'm reading about and needs plenum attention as well as headers.
My question is Is it worth the extra money for the Hughes manifold?
I'm not going to do any engines mods, at most full exhaust headers back and intake, maybe a tune if its cheap and easy enough to do on my own.
What do you recommend?
Thanks

 

Do the plugs/wires/cap/rotor/pcv while you have the intake out of the way.

Your choice on whether you buy the plate or not... if you don't, get some washers, or shorter bolts, or cut the 'tit' off the end of the stock bolts so you don't run into the same problem later.

You can also get the plate from ebay for about 50 bucks.

With 120k, it wouldn't hurt to do water pump, timing chain and gears at the same time. (yes.... dig deep into your motor. )

 

I know I need to replace plate. But if I buy Hughes manifold I believe I'm getting plate molded into a ported manifold and tb spacer. I just don't know if worth the extra money.
I did water pump a year ago, timing chain and gears might be a good idea tho.
I plan to get into a motor but not this one. I want my sports car back n that I will play with.

 

If you are talking about the hughes air gap, there is no plenum plate. (and yeah, 600 bucks is serious money for a manifold....) The "tb spacer" on that is actually an adapter, so you can use the stock throttle body. I believe the manifold was originally designed for a four barrel carb. On our trucks, throttle body spacers do absolutely nothing.

 

You'll also want an SCT tuner to go with that airgap. And people have reported on here about bottom end loss. The only way to fix that is by changing gears. I'd get the 50 dollar plate off Ebay if I were you.

 

^^^ +1 on the $50 plate. Spend that $600 hun in a better place.

 

I bought my air gap from the "for sale" section for $100. Having paid that, I'm happy. After installing it, I would have been pissed if I paid $600+ for it. I don't think its worth the asking price. I'd go with the $50 plate like Zman said.

 

Awesome, thanks for saving me the money. it can go toward the exhaust, intake, and maybe a tuner for a little better MPG's... Any recommendations for that?
I need a Full exhaust, NY weather finally got the best headers back. Also need an air intake stock is cracked.
What do you guys think for all that and a tuner?

PS body isn't too bad doing some more work this spring and a paint job

 

SCT is pretty much 'the best' tuner for our trucks. Contact Hemifever, and Hemifever tuning. (he has a nice web site.) Don't expect any better gas mileage though.... best thing you can do for that, is make sure everything is up to snuff on maintenance.

 

Thanks guys, what about this?
From what i'm reading i should get the Edlebrock 1207 14x3 to replace my intake and it just needs a 1/2 in gasket to fit?