SideStep

Read post #7, the FAST was ported as well....

Louis

iTrader: (7)

Im not believing this at all. There are more issues that just an intake swap.

LS2, back to back to an LS6, TWICE, lost power to the LS6.

We all know the FAST makes solid gains across the board.

lt1dave

iTrader: (7)

You don't have to believe it. It happened, and the ONLY changes were indeed the intake. I know the fast makes power, and that's why I use them on almost all the cars I put together wanting the most from there combo.
However, this is a very real dyno test. I am well aware the LS2 unported, will loose to the LS6. I dynoed the LS2 to find how it compared to the FAST, and it failed MISERABLY. So I figured, it (the LS2 intake) was useless anyway, so why not hack it open, and port it, and re test. That's what I did. Here are the results, like them or not. And as I stated, the FAST was reinstalled, and backed up the same numbers as the first dyno.

uberLS-1

Thanks, I did miss that....I think this was impressive, but I agree with Lou, the FAST always puts up good numbers where this LS-2 is simply an exception. Good info, well done Dave.

JS

iTrader: (4)

I'd still take the LSX/90 over the LS2 as Louis already pointed out...


I dis-agree with your statement that the porting of your intake was more inside than the runners...There isnt a whole lot that can be done inside a LSX,I smoothed out the casting flash,clean it up and contoured too but the work is in the runners and getting them to match the flow path of your heads....My LSX look like art work once I was done with it (10Hrs worth of work)

The only thing I'll say is IF u already have the LS2/90 then by all means try and port it as that cost zero...BUT if your running an LS6 then get that LSX/90 as it flat out works better than anything else out there as of now...

Just make sure u or someone else ports it correctly...

lt1dave

iTrader: (7)

Not sure how you could possibly spend 10hrs on a plastic intake, especially just doing the runners, but ok. However, most of the work that wil improve the intake is indeed inside the intake, not the runner. Thats not to say the runner doesnt need attention. However, if you didnt port the inside of your intake, you have left alot on the table.

JS

iTrader: (4)

I did port this inside,smooth it and took my time but again more time was done on the runners and how they were contoured..I spent 10 hrs total from the time I took it apart,ported it then hand finished it with 1000,1500,2000 grit...

Mine worked and I also went 10.80's@124 with a little 224 cam
U needed that GIANT 238 to run the same #

lt1dave

iTrader: (7)

LOL, you got me there. I didn't mean to offend, I misunderstood that you didn't port inside the intake.
However, since you brought up my cam selection,( Im assuming from a previous dyno post), in comparison to how much better you did running a 10.8 @ 124 ,which was awsome. I agree you must have done things right with suspension, weight reduction, and power. Congrats. However, All the cars Ive done with the "huge 238 cams", are all in the 10.6-10.8s, ALL trapping high 128s with factory weight . So Id say they are putting down another 40 or so more hp than you did, and probably weigh a little more . But like you said, they should with a "HUGE" cam.


This post was for strictly a Info sharing purpose, not to start flames.
peace-Dave

SRP

iTrader: (3)

nuf said

lt1dave

iTrader: (7)

Thanks for the confirmation TIG. Last I checked 3500+lb f-bodys, and C5s with nothing removed at all ARE full factory weights.

JS

iTrader: (4)

My car weighed 100lbs less than yours had LS6 heads ported by a local guy with STOCK GM VALVES...I wouldnt call it some elaborate setup,also it was tuned in closed loop and idled like a stocker with the 224 cam...Again 10.80's@124 THREW AN A4 not a 6sp But I agree this is BS,We were discussing the intake so lets play nice...

Nate_Taufer

iTrader: (1)

Nice times...but what's not to like? He cut the ****** in half ported it and then put it back together. The combo works. I think this is what we needed, an affordable alternative to the FAST intakes (that are un-godly over priced) that make close to the same power.

Nate

beardWS6

iTrader: (1)

Just curious, how much would I gain porting my LSX 90 set-up?

ws6sojuiced01

iTrader: (1)

May be stupid ? but can you port the ls6 intake and if so how well would it flow( just asking dont know much about it)

BAN-LS1

iTrader: (16)

Yeh i have the same question, how do you cut it and get it back together? What TB on the LS2 was used?

lt1dave

iTrader: (7)

Thanks for the replys about the intake. I didnt post the graph to imply the car was out of the ordinary fast or powerful, just a comparison of fast vs ls2 (note post title.) Also, this combo isnt in my car (but in a customers ). My car is in the sig.(also not blazing fast yet)

To answer a few questions.

Today 07:27 AM
beardWS6 Just curious, how much would I gain porting my LSX 90 set-up?

A FAST usually picks up about 5-15hp from ported.

Today 09:00 AM
ws6sojuiced01 May be stupid ? but can you port the ls6 intake and if so how well would it flow( just asking dont know much about it)

I dont think you wold gain much porting a LS6. It doesnt have too many major port entry or radius problems(Unlike the LS2)

skippydn

iTrader: (33)

Have yall did this same test using a ls1 intake.

oldschoolmuscle

iTrader: (5)

i agree spendin a grand on a intake and tb is a little steep. for the average car guy.

so how much would you guys charge for the ls2 intake and cut it open and port it.??

Zippinzee

Dave
PM me with a price for porting an LS2 intake for my C6. Thanks

rambo benson

OK, So who ports FAST 90 intakes and for how much? I already blew my wad on the expense of the damn thing so take it easy on me...PMS welcome!