A couple of easy ones.

Does this manifold fit the LS1 valley cover setup or does it need to be changed to LS6 setup?

Where does the MAP sensor mount? I don't see a mount in the back.

Ron

 

I suspect you mean MAP sensor---They move it to the front yes--
Also---as far as the installation---Now would be a good time to install the LS6 valley anyway--These engines are notorious for sucking eng oil into your maniflod via the PCV system----Look inside of your old manifold with a flashlight----If it is oil soaked as 99% of them are--I would get the LS6 valley---only about $75 also requires some re-routing of the PCV lines and --You will aslo have to grind off a small piece in the corner of you block under the valley---don't panic -i's easy just tape and cover everything to avoid alum getting into anything--
ALSO very important --On some Fast intakes---when installing them the bottom of the manifold will TOUCH some of the bolt heads on the valley and will NOT seal the intake---Check yours 1st with a pre-fit
I got used some typewriter liquid correcter and panited ALL the bolt heads and fit the manifold with a few bolts--IF any of the paint transfers to the bottom of the manifold you have a clearance issue
On my car I just replaced all the valley bolts with some allen head "button" screws--- the allen head tops are much smaller and thinner and fit with no touching--but check it again anyway !!

 

Thanks, yes I meant MAP, I changed the orig post. Now, if I would have asked where the throttle body mounts.......

So if it's moved to the front, I'll have to do some wiring. No prob. Uses the stock MAP sensor?
I got the complete stainless button head bolt kit with it, so I should be good to go there.

I'll do the valley cover swap. And a catch can, it just makes sense. The FAST has oily residue in it now as it came off an LS1.

When I get the LS1 intake off this week, I'll test fit the FAST, for cowl clearance etc.

Thanks!

 

what TB are you using?

Mount your TB to the intake with all the gaskets and as you tighten it down watch the clearance on top of the waterpump. It's a real close fit if your heads have been cut. I had to slightly grind the top of my waterpump to get a .002 feeler gauge in there.

 

The MAP sensor can be installed in either the front or the back of the manifold. Which ever position you choose, you'll need to drill out the hole. If you choose the front mount, you'll need a harness extension. Readily available from several sources. About 25 bucks.

There are clearance issues with the water pump and the cowl of the car. Grinding the water pump cures that one, and a couple 1/8th inch washers (12mm, you can purchase at Lowes) between the cradle and frame (2 each side,rear cradle bolts) will cure the cowl issue.

Stainless steel button head bolts for the valley cover, come in the FAST kit.

 

Printman,

I have a 90mm GM TB. LS2? Was planning on checking water pump clearance as well.

Ed,

Got ya on drilling out the hole. I wondered why the boss in the back was closed.

Ditto on the washers. A lot cheaper than lowered mounts.

Ron

 

yep, same TB as I have. If I were you I would consider the lower engine mounts Hinson sells ($155). Not only does it give clearance to the back of the intake but it firms up the engine from shaking and I feel it puts more torque to the wheels. Very good investment

 

Flat washers, $1.50. Less work.

 

Do you have a part number???

 

Yes I do & would provide a link but they are a competing non supporting vendor

My intake has reasonable clearance when idling, power on it hits hard. You don't see it unless you remove the intake, I did take a photo being I'm in the middle of pulling the clutch if anyone would like see it.

So being I'm header-less soon to be drive line less I will probably do the motor mounts. I'm just debating which height as my AR 17/8 headers are to damn close to many things.....that's the advantage of shimming the cradle.

Oil in the intake, I've tried both LS1 & LS6 routing with a catch can & a Oil Cap Breather....no success. Seems that driving style & engine displacement are a factor...I probably have both factors

A suggestion from Tracy that I will try, a metered Oil Breather cap, plug nipples pass. side valve cover, route the rear of the drivers to the catch can. Catch can to the normal intake position, check valve to prevent the Hi Vacuum condition, his Catch can "RX". He provides lots of data on the various Catch Cans, what I like about the "RX" is it had the greatest distance between the in/out lines to help in catching the most.

 

have you considered running a duel CC in tandem? I just hooked mine up like this and from what I can tell it's working. I'm venting into both valve cover pulling clean air in from the CAI housing.

 

Yep, I would still need to buy another. So I went with RX which is larger, 9" between in & out, built in check valve or c/w.

Do you have above average spirited driving style?

 

let's just say the RPMs are usually higher that most

 

I said in this post that I started that I would test fit this on my car. Well, I did and the news isn't good. The tolerances stacked up in the wrong direction.

It hits the cowl enough that I can't get it back far enough to seat it in place to line up the bolts.

Cowl interference in rear:



Close up:



Alignment to bolt (see yellow line)



Alignment at water pump:



So, now the question: will lower mounts get it there?
Drop the cradle until it fits and measure?

Rather disappointing.

Ron

 

Another Pain in the A.. FAST 102 adaptation...for a supposedly aftermarket bolt on product sold as such!!!

Disappointing is not the appropriate word to me...sorry to read about your disappointment Ron...

Christian

 

Seriously.....you can't be surprised. Plenty of info on this manifold being a crapshoot install. I don't know how many "bolt on" manifolds require one to shim the cradle, install different motor mounts, cut the cowl, grind on the $900 manifold, etc. No need for FAST to change the design, if you guys keep buying them.

 

I wasn't surprised. I was hoping it would at least be closer. Seriously. I bought it very right used. It came off a C5, it fit that car.

 

No pain no gain

 

Ron, it's part of the game with this intake.

Mine would bolt down but I didn't have much if any clearance. I installed the new mounts and gained about 1/16 clearance. If you can't get it to slide back enough to bolt up I would look at shimming.

I will say I like the way the new mounts hold the engine tighter and it feels like the torque to the wheels is better.

and never mind the haters, they are just pushing buttons on a laptop




jk dudes!

 

Agree 100% printman

Suck it up & get err done....which ever solution works best, myself I leaning to wards the stiffer stock height mounts, minimal shimming & one one of those Pfadt rear diff mount braces!

I already have the ECS Trans Brace.