I tested a few intakes, and TB setups on my car.
BBK in box still.
But one thing to remeber looking over this is my car dosn't show gains like alot of other guys cars. Over the past year, its just been showing a lower dyno number from mods and going faster. Having a s60 rearend, steel DS, ram billet flyplate, running big 28 Drs, going to 4:30 gears. But this was all on the same parts, same dyno, just intake changed.
Base line is only 403whp but the car went 11.1s 123 the day before, on the LS6 intake and ported stock TB. with the stock maff with screen, bellow, filter and everything. Older pic, I changed the catch can routing and removed the VC breather.
Then I put my summit/PP 85MM TB I ported on the LS6 intake. I know the LS6 intake is a good piece, I heard and think its better then the LS2 and the smaller inlet size is the restrction. Also seen some good gains with the TPIS work putting larger TBs on the LS6 intake. I know I could have dose some expoy work, and make the LS6 intake a 85mm inlet, and ran a paper gasket. But I didnt want to do that to my LS6 its very nice and didn't have the time. To fit it I used what I think was a BBK adapoter plate they sell with the TB, just found it around the shop. Needed this to seal on the LS6 inlet Oring. Also need to run the offset bracket on the tottal cable, so you have WOT and normal closed postion.
The LS6/ ported stock TB pull I cut short or rpm when my shiftlite came on at 6600
car gained about 2whp everywere. I didnt print out a highlighter one run, But The BBK was up everywere they didnt cross. Might not look like alot, but later on, The lastest and baddest, and lots of money.... a fast92 with a 92TB, and a ported 85MAF w/ no screen, and all 4inch duct to it only made 415whp so...
next was the BBK 85 intake. Your notice the thing has some weight to it, how much....
LS1
this fast has some expoy work, btw
BBK
Some pics of the BBK. The base coverplate in nice the think looks to be stainless, I think I remebed them a few years ago there were thinner. And it has a nice gasket for them now, all stainless hardwear too, and a map sencor hold down bolt wich it very nice. This intake is great for FI, or hidding a DP kit inside.
The EGR plate needs to have the powder coat sanded off and sides quick, take 1min. On some its fit tight to get the bolts in.
The BBK runner outlets come with some quick cleanup work that looks good. The runners still have some slag and casting crap in them, I'd knock out with the bend bar beofre running it on your car.
BBK runner lenghts
close to the rear coolent tube block but clears. Also you can run the full lenght 97-00 style coolent air bleeds on the heads witch is nice. Somthing good to do keeping the heads cooler and more consistent temps.
Next is the fast92. This one I ported a little. nothing fancy just the basic little things anyone can do. I am going to do some more work on it soon hopfully.
map braket I like to run on them
One thing I didn't like seeing around all 8 of the injector holes have casting boogers that stick up, and make the upper shell not fit tight like everywere else
quick cleanup removing the wedge they have
gone
and just removed the casting line on the running inlets, and redius them a little better blending out some bludges for bolt holes and such.
on the car
stock uported heads
Nick Willaims 92mm TB is very nice
bolted down clears the a stock LS6 valley cover, like it should
Huge pain getting the stock maff off the Lid, heat gun helped a ton
Got the 4inch 22* bellow off that link chris1312 (?) posted. after cutting down fits good. Just till I get inspected this month then going SD tune, this maf is a bitch without the screen and decell. Fast on the car.... some like it.. some don't. I like my old fast the best
the dyno results of the BBK and the fast.
I'm mixed on this. If I had a stock TB and a LS1 intake, I would buy a BBK for sure. Unless I found a LS6 intake cheap, like $250 that dosnt happen much. Most are $330-350. A BBK 85mm intake is only $399 at NewEra were I got mine. So thats a good deal if you have a LS1 intake still, its 5whp more then a LS6, that like 25% the power gain for not alot more money.
And you can port them pretty easy, maybe even fit a used 90mm TB on them. But Ive found most 346s are fine with a 85MM TB. The BBK is really nice compaired to that Profenial Products intake, Ive worked with 2 of them, and there were both junk. That heat soak stuff is BS, after the dyno pull I could push my hand hard on the BBK and keep it there. Warm not hot, just the same as my LS6 gets. The heads were to hot to touch. Sitting in a parking lot in the sun running it will geat hot, but so dose the wheel wells and everything else from engine heat and no airfolw. The intake sits on the rubber Orings, its not bolted right to the motor touching with a paper gasket. The bolts carry some heat but this is a must.
If I had a LS6 intake and a ported stock TB I don't think I'd buy a BBK, but then agian it was amost have the gains of the fast over the really good LS6 intake with a 75mm TB. And I could, and I'm going to sell my LS6 for 330-350$ and my ported stock TB for $100.
The fast intake is a lot of money all setup on your car, I was hoping to make 420whp and was disapointed on the 415whp. But even Mike at new era said he sees a lot of cars that don't gain 13-15whp over a LS6, and with tunning only gaina 9-11 kinda sucks for the money. But its true if you have stock heads, and cubes. But I've seen cars gain 25-30 with smaller 370-383cube deals, and good heads, over the LS6. This was a lot of work and time, thanks to mike at newera for letting me use the dyno doing all this, and keeping all these parts around the shop. And my roomate for helping me change all these parts late at night. I'm hoping to go 124-125 and a 10.99 is the better fall air.
Great write up, so was the FAST intake the only intake ran with the 85mm MAF? also the reducer spacer used with the 85mm TB on the LS6 intake doesn't really reduce down to well as shown in the pic. I wonder how a ported BBK or ported Ls6 with the mouth opened to 85mm to match the TB would have done again great write up glad to see a good comparo.
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Nice job. Looks like the fast is not worth the money for your car. I have been debating for a while if i want to put a fast on and your test doesn't help me LOL
I've been to the track 2 times now, and ran 11.15's 11.17s 122.7-123.5 with the fast92 setup. Best is a 11.13 123.9 with the LS6/ported stock TB, stock maff. backed up 11.1s like 20times. The fast setup is making more power, and should go faster in better air.
But $1,300-1,800(ported fast) for 10whp is really bad.
Quote:
Originally Posted by 1999BlueTA
Great write up, so was the FAST intake the only intake ran with the 85mm MAF? also the reducer spacer used with the 85mm TB on the LS6 intake doesn't really reduce down to well as shown in the pic. I wonder how a ported BBK or ported Ls6 with the mouth opened to 85mm to match the TB would have done again great write up glad to see a good comparo.
Yes, The fast92 setup I put on was, all out most HP. I know I could have done a pull with the stock maf, bellow on the 92mm TB. But I was getting tired of changing all this stuff on my car. And was running short on time I could be on the dyno, after hours. Mike had to put some time in with the 85maff (I bought on Ebay for $25) for idle, and driving still. And it took me like 1hr to cut the 22* elbow down and everything to fit to the lid nice. My inspection is up soon, and I think I'm gona go to a SD tune before the shootut anyway, but need a maff tune for now. I was thinking about putting a LS1 intake on just to see how bad it is, I have the tune for the setup now I can put back. If there time, to a LS1 intake and a unported TB, and my ported, both with my stock maff, and bellow. Thats easy to change and just tune for some WOT pulls.
The spacer I'm not sure about, the brand. But it wasn't a 75mm outlet, maybe 80mm. And the inlet was bigger too the the TB. The PP/summit 85mm TB, is 85MM at the blade but it gets a little bigger on the outlet. It came really close to the blade hitting the inlet on the intake, and the Oring was only like 25% touching, not even the middle line in it. I was worried about the bottem half the Oring slipping out, the spacer fit it better so used it.
I wanted to find out for myself, like I try do for everything. I've read to many 20-35whp "gains after" that are not same day back to back, but 6 months later or even 1yr. But the same maybe more guys that gain 8-12 don't post about it.
I'll keep this updated with track gains. So far like I said I havnt done better then the LS6/ ported stock TB. My car is pretty consitant for m6, here some so far.
Nice write up. All I have left to consider with my LQ4/Dart225 set up is the Fast intake. I already have the LS6 with ported TB. My problem is I can't possibly show real et's with a 7.5 rear. I ran 12.0's @ 121.3 on street tires leaving at 3000 before my LQ4 swap.
nice write up!my car has a ls1 intake on it and i swaped it for the bbk and the car felt like it lost power and was runing slower at the track.
the car was tuned for the ls1 intake but not the bbk so maybe thats why because i needed a retune.
was your tune way off between intake swaps?
it sucks to see that it made more than the ls6 and i got rid of it and put my ls1 intake back on. im going to get an ls6 when i get the extra cash.
LS6 vs. LS6 85TB vs. BBK85 vs. FAST92 
so...
BBK 85 , LS6 75 better graff
I wanted to find out for myself, like I try do for everything. I've read to many 20-35whp "gains after" that are not same day back to back, but 6 months later or even 1yr. But the same maybe more guys that gain 8-12 don't post about it.
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