rob20rx7

Had this Sheet metal intake I purchased a while back because the seller didnt want to spend all the money to modify the car and get it to fit in the car. Turns out there isnt much to do. so far a little bit of cutting in the cowling in the engine bay and it dropped right in. sent the LS7 Valley Cover to powdercoat and now just doing some final mods before everything goes back together.

Had to flip the throttle body and use that 12" extension. Also had a buddy of mine weld a bung that mounts the map sensor to the manifold. Purchased some 10x1.5mm x 95mm bolts to move the powersteering pump forward about 10mm. a couple hoses that had to be changed or lengthend and we should be good to go.

here some pics.

BoostedC3

Did you do a baseline dyno?

neverstop

looks good. also interested in before/after dyno as I have yet to see a good comparison of an aftermarket intake manifold on a >700whp supercharged vette


I was always told not to put methanol nozzle before the BOV also as when you let off it can spray out meth?

BoostedC3

Same, I've also seen this intake make less power than stock intake so im curious how this turns out.

Unreal

It makes WAY less power under curve, and slows the car way down, but you may pick up a little from 6800-7200. If you have a solid roller, big rpm, 8500+rpm motor and it never drops below 6500ish, these intakes can shine. For a street car, or normal RPM hydralic setup, you lose 100+ftlbs and so much power it is a joke.

BoostedC3

Yep I've seen the same results. Hey looks cool tho

Turbo2L

Nothing like a flash fire on decel.

Unreal

If I had one of those intakes I maybe looking for a way to collect insurance money to start over, so it may not be a bad idea.

Turbo2L

Good point.

EuroRod

Just finished up my install on the Sniper. I'll post any gains soon. But, it looks killer, and if I get 0 power increase, I'm ok with that. Plans for a smaller pulley (a 3.6 vs the current 4.0) soon, too. Engine is a 6.8 liter LS2 with the D1 and others goodies. Looking for a conservative 700 whp.

KB)

rob20rx7

your setup looks good. Just finished mine last week.

EuroRod

There have been a couple of posts that state this manifold, with the short runner length, does not perform well.

This I can understand this in a normally aspirated engine.

But, how does this have much, if any, influence in a pressurized engine?

Can someone 'splain this to me?

Milan

Does anyone actually have any proof of going faster/making more power with these manifolds or are you all doing it to try to be cool? I'm guessing OP is building a show car based on the MSD coils

EuroRod

My plan is to get my car on the Dyno in a week or so. I will post the results.

sm0kinvette

I know it's an old thread but what were the results