I'm thinking of putting one of these little beauties on my Vette. I'd like to know what you guys think of them. And I have a few questions.

1.) What psi are you running?
2.) Custom intercooler to avoid the ATI bottleneck?
3.) How bad is the belt slippage on the 6 rib pulley? What fixes have you tried? Was it sucessful?
4.) Why did you go with this one over the P-1SC?
5.) How loud is the whine when you are idling, going down the highway, and WOT?
6.) Would you have chosen anything differently if you had to do it again?

Thanks guys, looking forward to your replies :cheers:


[Modified by mn_vette, 9:19 PM 9/3/2003]


[Modified by mn_vette, 10:57 PM 9/3/2003]

 

 

 

I'm thinking of putting one of these little beauties on my Vette. I'd like to know what you guys think of them. And I have a few questions.
1.) What psi are you running? 11psi @5900rpm
2.) Custom intercooler to avoid the ATI bottleneck? ATI so far, custom coming this winter..
3.) How bad is the belt slippage on the 6 rib pulley? What fixes have you tried? Was it sucessful? No beltslip so far
4.) Why did you go with this one over the P-1SC? I chose the D1 (not D1sc) because the P1 is to small and the sc unit seemed to be a worse setup to me.
5.) How loud is the whine when you are idling, going down the highway, and WOT? It's pretty loud all around, I can hear the whining all the time. Just like I want it...


Thanks guys, looking forward to your replies

 

I'm thinking of putting one of these little beauties on my Vette. I'd like to know what you guys think of them. And I have a few questions.
1.) What psi are you running? 12 psi, but up against the max flow deliverable.
2.) Custom intercooler to avoid the ATI bottleneck? Spearco
3.) How bad is the belt slippage on the 6 rib pulley? What fixes have you tried? Was it sucessful? minimal; I have modified the belt routing to ~330 degrees.
4.) Why did you go with this one over the P-1SC? Previously ran a D1, stepped up due to flow.
5.) How loud is the whine when you are idling, going down the highway, and WOT? Little wine at idle, none at driving speed. Much quieter than previous blowers
6.) Would you have chosen anything differently if you had to do it again? I would like to go larger. I would like to try a D3R on the street. A buddy of mine runs this on his 420 ci sb chevy 92 Mustang.

Thanks guys, looking forward to your replies

 

Anyone done a custom LT1 intercooler, seeing how the installation is differen with a LT1 car with a MAF and all.

 

1.) What psi are you running?

I run 12-19 psi, depending upon configuration, through a high flow stroker application.

2.) Custom intercooler to avoid the ATI bottleneck?

ATI intercooler is pretty much maxed out at the 500-550 rwhp range. I will convert to alky/water injection in the near future.

3.) How bad is the belt slippage on the 6 rib pulley? What fixes have you tried? Was it sucessful?

Belt slip is bad for anything above the 8 psi range...many have problems making 6-7 psi. Most of the belt slip occurs at the crank pulley (very little belt wrap) and there are no easy fixes. The only real fix that seems to work is the ASP 8-rib conversion or a cog setup...do a search for more information.

4.) Why did you go with this one over the P-1SC?

I believe (not totally certain about this) the only difference in the two units is the impeller...the D1SC having a helixed design, which brings the boost on more efficiently at higher RPMs and produces less heat at the same boost levels.

5.) How loud is the whine when you are idling, going down the highway, and WOT?

I got lucky, my unit is about as loud as a bad alternator/power steering pump at idle and barely noticeable at cruise and impossible to hear at wot.

6.) Would you have chosen anything differently if you had to do it again?

I would have gotten an F1SC for many of the same reasons I got the D1SC over the P1SC.


Here is a picture of the 8-rib crank pulley conversion (6-rib runs all the stock assessories and the 8-rib is dedicated to only running the blower):





[Modified by Brand-X, 8:14 PM 9/3/2003]

 

Brand X is right on. The only real fix is to do 8 ribs or cog conversion. Before my cog conversion I was only seeing 3-4 psi at 6400rpm and some time 5psi and came down because the serpentine belt is slipping on the bottom of the balancer. You can not tune a car with boost going up and down.
Serpentine belt setup- 1 belt that drive everything where 8 ribs/cog conversion has it own belt to drive the blower by itself. That way you can have 270 degree belt wrap.

D1SC is very quiet blower. The D1 loud as P600B.


Bruce
383LT1 Supercharged




[Modified by Bruce, 12:32 PM 9/6/2003]

 

For the ATI blowers, who makes a kit for this??? Or am I going to have to go to a custom setup? The cog setup would seem to be the way to go if I had to change it anyways. But I'd like to get a kit that I know will fit. I've tried the custom thing it's a pain to do.

 

For a Procharger cog setup, try:
http://www.forcefedperformance.com

Ask for Keith, tell him Chris from Kansas City sent you.




[Modified by Brand-X, 6:18 PM 9/8/2003]

 

I tried emailing ASP and they told me that they didn't make anything for the LT-1. What's up with this?? do I have to get a custom pulley made either way then???

 

Will you need a keyed hub to run a cogged setup??? will the amount of torque from the enting actually slip the harmonic balancer slightly causing the engine to come out of balance??? Or am I just being crazy??

 

If you are running a cog/8 ribs conversion. I strongly suggest you to keyed your crank hub. Because it will turn under hard WOT without key hub.

Either way the balancer will have to come out for the conversion. Take me about 35hrs to do the conversion. I modified the ATI bracket to get it to work with the new drive setup.


Bruce

 

That doesn't sound like any fun. I don't really want to have to rip my engine apart to get a keyed hub on there. I just got it put back togther!! How hard was the modifications on the ati bracket to get it to work?

 

As for the 8-rib conversion, I think you might need to talk with a guy named Lee at ASP to get the straight poop. Bruce is right about a keyed hub, you run the risk of trashing your crank snout without one. You can pick a billet one up for less than $100 on the internet. If you're looking for a cog conversion kit, Keith @ forcefed sells them (crank hub and pulley, bracket, belt, idlers, etc.)...no fabrication required.

How much RWHP/boost are you wanting to make?





[Modified by Brand-X, 8:21 PM 9/10/2003]

 

 

If you're looking for 10.9x on drag radials, you're probably going to need +575 rwhp to get there (w/slicks...+525 rwhp)...just a guess! Sounds lie Blackbart has if figured out...put good gas in, turn a ****, and run more boost! I run the Accel gen VII+ w/wideband...tons easier to tune than LT1 edit, however, if you go that route, Accel doesn't make a wiring harness for the Vette...you'll have to run the Camaro harness on top of you stock harness. Call Mac at http://www.fasttrackperformance.com he sells a custom Vette harness that slices into the stock wiring harness for a factory clean look and all your gauges will work, too. If I wanted to run 10.9x's, I'd figure 600 rwhp and build back from there..good luck!
CT