BigKID

iTrader: (5)

Great build! Glad to see more Twin-Screw setups popping up on here.

Time to go ahead and order the 8-rib stuff. I want to see you pulley it down to 15psi. With that 4" and stock crank, I doubt you will see 10psi. My 2.8L only made 9lbs on the same pulley combo with smaller cam and hand ported 241 heads. Just FYI if you want to push it a little more with the 6-rib, I started getting significant belt slip when I went to a 3.25" blower pulley, making ~14psi when not slipping.

Razor

iTrader: (1)

Nice looking truck!

Wish I knew I could have went with a 2.9 when I was shopping for a blower..how come you couldn't have done this build a year ago!?!

What type of fuel are you going to use?

Oh, and I'm sure if you are doing any research on the Camaro5 boards, you will quickly get the "PD blowers don't make any power" opinion held by the majority...they are the bastard child of forced induction on that board for some reason.

Looking forward to your results.

Last Call

iTrader: (4)

Eventually I am going to run E85. I need to figure out the pumps set up, Not sure if I am going to a twin intank set up, surge tank tank, or sumped tank with a big inline pump. None of them seem appealing to me, so I am going to run pump has (91) for now.

Yes, they don't like the Maggies, and the Whipples are just like whatever. Not sure why.

Can you share any videos of your car at idle? Smokeshow said yours was pretty smooth, and mine is a Stage 2 and pretty lumpy.

stone150

iTrader: (2)

Awesome!

Razor

iTrader: (1)

Just looking to see if you had any dyno numbers or more progress and saw this post.

I don't have any idle videos but, like Jake said, my car idles very smooth. Doesn't even sound like it has a cam in it to me but I am use to hearing it with a 110 LSA cam in my old SBC. The shake back and forth and **** poor vacuum get old in a street car though. I'll take this current cam's characteristics any day with the power it makes.

Vortec350ss

iTrader: (20)

I'd like to see more on this too. Hows the alternator bracket working out, and where did you get it from? Any flex there? I would think that could be a source of problems with belts down the road if its not perfect. I know there are companies that make them... but I've always been weary.

Why can't you use the Camaro accessories with hydroboost? Sorry for the newb question... i just don't know much about hydroboost at the moment.

Last Call

iTrader: (4)

No dyno numbers yet. I just finished moving. I ordered a Walbro 450 last week, so hoping to run E85 by the time I put it on the rollers. The start up was with the old tune from the 112, I have tweaked a little bit, and it is much better.

No issues with the alternator bracket. The bracket is the original truck bracket notched in the back with a plate made to move it over about 2" toward drivers side. I don't think there is any flex, it is still uses the 5-6 bolts to bolt on. I haven't chucked any belts, so that is a good thing! haha

I don't think the pressure lines from the hydroboost would bolt up. I guess I could have custom ones made, but I already purchases all new GM lines a few years ago, and didn't want another "project"

07 Z71

iTrader: (44)

Whipple looks really good

Vortec350ss

iTrader: (20)

Did you make the bracket yourself? Does your water pump hose run inside your belt system? Honestly I havent heard great things about those LS3 camaro water pumps.

this is the only production bracket i have seen that would accomplish that you did:

Accessories - LS1 Truck Billet Alternator - Power Steering Bracket LSx conversion swap mounts and conversion brackets and swap plates. LSx conversion swap mounts, LS conversion brackets and LS1 swap plates.

My biggest concern would be flex though... last thing I need is to start puking belts like a procharger set up (have to jab at them when I get the chance... otherwise Im just jealous).

Last Call

iTrader: (4)

My brother-in-law made most of the bracket. Yes, water pump runs inside belt system. I don't like that, but wanted to run the hydroboost and didn't find a way to run it off the ls3 p/s pump. Hoping the ls3 water pump holds up, I broke the pulleys off a few of the truck pumps. So not sure how much worse the ls3 pump can be.

I don't think there is much flex, but it appears to be working good so far. Once (if I ever get some time), I'll throw it on the dyno and find out for sure.