97F1R408

iTrader: (2)

Well I just got everything done and my main disapointment other than it doesnt seem to make any more power than na is before buying I have heard several others and they all scream. This blower makes no noise not reving not driving hard. When I ordered I said I wanted a 15psi pulley, when I get it all done it says to be making 6-8. I call them they send there smallest pulley 3.5" and it is now at 10psi. I call them back they said I would need a overdrive balancer so I order the innovators west 10% balancer no change in noise. I also dont see the difference in power either, for those familiar they have a valet mode which I manually held open to run all motor for sure and the difference closed just isnt there. To push even 10psi into a 408 it should be moving. I am getting all the little things done and on the 12th it goes to Livernois probably to call me with their disapointments as well. Base tune was from Charlie Williams in California and I have no reason to doubt his work. Mods are

Kenne Belle 2.8 big bore
408 ci eagle crank manley rods je pistons
All Pro heads fully ported shaft mount rockers big blower cam from A&A Corvettes 650lift (have to find card)
90 mm ported ls2 tb
long tubes with high flow cats through 4" exuast
4l80e trans with brake
yank sc3000 converter
3:73 gears




Kenne Belles first vette with a slightly milder 402 somehow made 18psi and 801rwhp and 851rwtq . Im just not seeing it. What plugs are recomended?

Jake@EPP

It defiantly sounds like something is wrong. Boost leaking somewhere is my first guess. What is the condition of the belt?

Has the blower been to KB yet? Condition of air filter?

The other vette was able to make 18psi, so its logical something is up, don't be discouraged quite yet, the mountain of torque is worth it!

DanZ28

iTrader: (5)

You might give Rick at Senergy a call as he did the first KB on the orange vette. I know he worked with KB to fix a couple issues before the release...

Dan

obZidian

iTrader: (2)

Right, I remember that vette. It made something like +700rwtrq. at or below 2k rpm. Seriously, that thing is monsterous.

Now, you have a solid setup there and don't be discouraged, it should make goobs of power, especially on a 408ci.

First thing that comes to mind is that either you have serious belt slip or boost leak. Since its a manifold style, you either have a faulty seam, bad gasket or whatever seals the blower to the valley area. Or, the actual blower itself is not functioning right.

With those pulleys, brotha, you should cooking HARD!!! Maybe it's the tune, sparkplugs, wires, fuel injectors or lines, coils.... there a million things that is holding you back.

Just don't wigout and scratch the whole project, the means to have a disgusting amount of power is there, you just need to figure it out.

good luck!!

rjw

iTrader: (3)

You may want to pm Jeff..who was the first to try that blower, regarding synergy or anything else related to his setup (which he sold btw)

Not sure if he is on this forum, but he is American HP on the vette forum..can be found hanging in the C5 FI section.

Hard to believe that it feels like na even at 5 or 10 psi though.

Good luck with it

rjw

qqwqeqwrqwqtq

Did you dyno it? Just how big is the cam? Not monstrous enough to let all the boost out the exhaust valve I hope. (Even so it should be making quite a bit of power)

gametech

iTrader: (1)

Don't be offended by this question, but you did pin the crank pulley, right?

venom ws7

iTrader: (13)

Something is wrong for sure with your setup and 3.73 that thing must smoke the tires all over the place TQ Everywhere.

Good luck man.

ALLBOTTLE

iTrader: (13)

Have you checked the bypass to make sure it's not creeping open?

BlownChevy

iTrader: (20)

do you have an underdrive crank pulley?

2001WS6Vert

Are you sure those cats. aren't clogged? I can't see any cats. handling your setup.

97F1R408

iTrader: (2)

Yes the crank is pinned and I actually have an overdriven balancer. The cats are high flow style so you can look right through them. Everything is brand new no used parts. I have looked at the bypass and have plugged the vacum line off going to it and held it open and closed doesnt seem to make a difference. With this style manifold, I dont really know how there could be a leak and to vent that kind of boost It would be very loud. I am keeping my head up for sure but on the first ride after goosing it my buddy looks at me and we were both thinking, what the ***. And as for the cam I will post the specs but A&A recomended it for all my specs and all he does is blown cars.Thanks for the input guys. Looking back through assembly the only part of the kit that is not dissasembled is the manifold / cooler and the blower They do put tape over the ports and on bottom of the blower which has all been removed for sure but as far as internally ? although by know even though it wouldnt be good I would assume it would get torn up/off. One thing that made me think is my dad used to rebuild GM blowers for detroit diesels and he had said that just by turning the rotors by hand if there were a paper towel on there it would suck it right in, With that in mind when mine arrived just looking at it I was turning the pulley when the tape was still on to see it get drawn in but nothing. Is it possible they dont have some tolerances set right internally? I have called them on the no noise issue he said that the blowers dont make noise it is the amount of air rushing through them that makes noise, and like I said on a cobra with 28? cubes at 9psi they scream.

Z06PSI

iTrader: (33)

Yes he did.....

rjw

iTrader: (3)

Yes...I saw that you bought it on the vette forum...good luck with it

jimbob

iTrader: (4)

I can tell you from experience that a 402ci with AFR 225's, long tubes, catted pipe, small cam (like 220ish), Ported 90mm t-body. Will make about 12 psi with a 3.5 pulley and innovators west overdrive crank pulley. To get more boost in that combo you need 2.5-3 inch pulley made. I believe the corvette guy used a 2.75 pulley with over drive bottom to make 15 PSI. Still though, you should notice a huge jump in power on 10-11 PSI boost that your on. Unless you’re too rich....

Oh yeah, with the 4 inch pulley that was sent and stock bottom pulley we were seeing 6-7 PSI of boost. 10-11 PSI with 3.5 inch, then around the current 12 PSI with the bottom pulley.

Hope this helps...

Slowhawk

iTrader: (12)

You need someone to scan/tune it.Nobody could mailorder that setup 100% right.I bet it's probly has serious KR which I've seen on 97 cars.The boost really goes around the head/cam selection. Would love to hear what they find.I have a set of All Pro's on another boosted car that is low on boost.Wonder if it's common.

TS6

iTrader: (41)

I think it has to be the tune. Even at 10 psi there should be a huge difference in power.

97F1R408

iTrader: (2)

I have hp tuners mpvi and the lm1 wide band and have a modis here at the shop. The vehicle for this is actually my 03 sierra I just didnt want to complicate things. I first ran The truck with the stock fuel pump and I do have a fuel pressure gauge on it, I expected it to drop off in upper rpm's but it didnt, however I did add the magnachargers extra fuel pump since. I found the cam card it is a comp .644 int lift .654 ex lift 117 lobe seperation 117intake centerline duration @.50 231 int 243 ex The cam was degreed to exact. What plugs should I have in this thing it curently has tr6's

Frost

iTrader: (45)

Don't you need a gasketed type plug for the all-pros (which the TR6s are not)?

Since you have HPT, to satisfy those wondering, what is your AFR at WOT and what does your advance look like up top from off-idle through the band?

97F1R408

iTrader: (2)

I was definetly not aware of this, thanks I'll look into this if so what plug would you recomend ?