I'm Convinced, I hope I'm proven wrong, That fast and weiand can't make an intake for L92 heads that makes enough hp to justify buying it. If you look at every attempt at and EFI intake, It doesn't make the horsepower you would expect. Only intake that does half way descent seems to be the carb intakes. I'm getting to the point of scrapping the LS3/L92 heads and going with something different. The whole deal with the LS7 fast coming out before the L92 heads has sent me over the edge as well

 

Yeah me too.

That and the fact none of the vendors will just come on here and give a straight, honest answer.

 

So how is that 102 for the L92 heads coming along?

 

I don't understand why everyone assumes that FAST is not coming out with the stupid intake. THEY ALREADY HAVE. Have you not seen the fact that the new intake swaps out the runner so you can use it for either the L92 OR LS7 heads. Again, it would only make sense for them to target a group of people (those with LS7 heads - will generally drop the coin for a new more expensive intake first) who are willing to pony up extra money to help begin offsetting the fixed costs of developing/tooling/producing a brand new intake from scratch. Not only that, but make it more versatile! Remember, this intake literally JUST came out. I would put down serious coin and bet that the L92 intake runners are just around the corner.

 

Why?

Because this intake has been talked about for over a year. Was suppose to be available end of last year-then it moved to Jan-then it moved to April-now it's moved to May or August. Does this sound like a familiar story from another company that was suppose to release an intake for the L92 heads?

And keep in mind and LS7 version wasn't even talked about until a few months ago and now it has come to pass while the people with L92/LS3 heads sit here and wait.

I do understand your point about the LS7 "crowd" but to me it would make more sense to:

#1 take care of the people that have been told it was coming out and are "first in line"

and

#2 I would think, even though the LS7 crowd may be more apt to drop coin I would think (I do not know) there would be more people to sell intakes to in the L92/LS3 head crowd.

 

and FAST won't come on here to clear up the BS.

 

Wonder why that is

 

it's a wonder how katech comes on the board a refuses to stop at this thread.

 

I'm here, I'm just not going to speak for Comp because I don't know the answer to the L92 intake question. I'd recommend calling Comp.

 

i hate being a smart a$$ but you started the thread maybe you should speak with comp. considering who you are i'm sure they would talk with you before me.

 

I bet its like I said before, The L92 version isn't making the horsepower they thought it would and they figure the L92 crowd is more budget minded and they (FAST) figure we wont spend the money on a $1000 intake for marginal gains. Where as guys with LS7's have the deeper pockets and will take any horsepower then can get. Just a theory, dont hang me for it Again though, I COULD be 100% wrong, this is why somebody who knows what the **** they are talking about should come on clear up this bs.

 

Guys,

Thanks again for all the interest in FAST and for the patience as we bring these intakes to market. I will do my best to answer your questions.

I wasn’t aware of the question to me until Jason emailed me a link - thanks Jason for the heads up. In the future, please PM me or email me directly if you have ANY questions - I'll be more than happy to answer any questions.

First, let me make it clear - we want these manifolds finished as much as all of you, and we are fully committed to these manifolds. There is absolutely no gray area, these manifolds will exist - and we're very close. Internally, all efforts are pushing as hard as we can to get these done and in stock, both LS7 and LS3 versions.

Today, we have the upper shells (common for LS7 and LS3) and lower LS7 and LS3 shells completed. This means shell tooling is finished, proven, and making parts. I have in my hand, production upper and lower LS7 and LS3 shells. Runners are another story; I’ll get to next.

The lower shells are obviously unique to the engine family (LS7, LS3, etc...). They are injection molded parts, shot out of a common master lower tool with "slide inserts specific to each engine family".

The first step, as dictated by the injection molding tool design, is the LS7 part. This is our base lower, and thereby was the first part. The LS3 part is technically a 'version' of the LS7 lower, made specifically to fit the LS3. You will find an interesting fact; all FAST LSXR manifolds will also have LS7 bolt holes (a harmless feature on LS3) in them!

The LS7 runners have a slight head start on the LS3 (maybe a month or two) but both runner designs are finalized and approved for production. The injection mold tools are very complex, and the nature of plastic is such that a tool is fine tuned (like a casting) to adjust for things like shrinkage, fill, and solidification rates. We're in the fine tuning stage right now. When that wraps, the tools will be heat treated (finalized) and scheduled for production. We’re juggling many vendors here (tooling, heat treating, injection mold, etc).

The LS3 version was recently tested at Wegner Motorsports, results are similar to those we've found on LS7; I’ll post those dyno results next.

Guys, I hope this clears up any questions - we're working as hard and fast as we can to get you these parts!

Please contact me if you have further questions.

Best regards,
Brian Reese

 

nice to hear from the "horse's mouth" and where are those dyno results for the L92 you spoke of?

how about you send one to me to dyno for you...ill even pay for the dyno time and post the graphs

 

Guys,
here is a dyno test from Wegner Motorsports with the LS3 version FAST LSXR intake manfold, and 92mm throttle body.

415 CID
Stock LS3 heads
FAST 92mm throttle body

 

so it only made 10 hp and 10tq on a engine dyno?

 

That is correct for this particular test. This engine is running with a FAST XFI (Speed Density - so no automatic MAF benefit like OEM) and this test was with a 92mm throttle only; with the 102mm throttle body expect to add about 3-4hp more on the LS3. The 102mm is now like the "old" LSX 90mm was to the original 78mm.

 

What were you expecting? 30rwhp? hahaha, not a chance on STOCK heads. Port those heads, then do a before and after comparison for the manifold and you will see your 30+rwhp gain.


Outstanding results!

 

on a 415 cube motor on a engine dyno, um, i expected to see at least 20-25. so about 10-15 rwhp...roughly.

i have a 416 with ported heads and bigger cam.....so we will see. I think im better off buying TFS 235's and a 92mm fast...

what was this info about earlier where you needed a 250$ kit for the fuel rails?

 

"I was expecting...." come on. Based on your vast expertise right? Give it a rest already..

 

oh, sorry. i thought a 1000$ intake that took 46 years to make would make more than 1 rwhp....my bad