what type of bypass valve ....

[96 SS 383]

I have a 96 383 forged bottom end with a baby blower (p600B) I'm gonna try to see 10 psi out of it and wondering on what type of bypass valve I should run. I like the way the big red race valve sounds but just not sure on if that's even applicable on my blower. This is the first time messing around with forced induction ... but anyways any suggestions on the bypass valve or anyone have one for sale that will work thanks.

[NASA]

Look up the race parts solutions 50mm, cheap and Ive heard only good things.

[popo8]

I use a Mondo 50mm

MEMBER @ LTXtech.com

[96 SS 383]

Ok ill take a look at both. And I'm wanting one you can definitely hear. The louder the better.

[blackbirdws6]

Big red race valve will work fine. Go for the open version for all the noise.

[96 SS 383]

ok cool does running one atmospheric have any drawbacks over running it recirculating?

[Still2slow]

I think for mass air cars recirculating is preferred. I'm speed density and my mondo vents to atmosphere.

[1fstss]

I have a big red bypass... Love it. But even on 10 psi with a p600b the small bypass would be fine

[popo8]

The mo do is super loud...just make sure it does not point down ward...lol.

If i drive over sand or dirt...it makes an insant mess.

MEMBER @ LTXtech.com

[blackbirdws6]

ok cool does running one atmospheric have any drawbacks over running it recirculating?
As mentioned, its preferred to run an open bypass but just make sure you place it well before the MAF sensor.

[96 SS 383]

Ok so a big red race valve is just over kill? I looked at the mondo and I'm leaning toward it I wish I could find a few more soundclips of them on youtube tho. How much boost you running with your mondo popo? And yea it would be a good ways before the m.a.f.

[96 SS 383]

And def won't be pointing it down then my driveway is gravel that wouldn't work out well with a black car lol

[popo8]

And def won't be pointing it down then my driveway is gravel that wouldn't work out well with a black car lol

Mine is SOOOOO horrible... detailed the engine... took the car to Ocean City MD for a week of cruising...under the hood COATED in sand...

Came home, cleaned it up... went to a 4th of july car show.....entrance to the show had some powdery dirt.... DE JA VUE!

[ZOHAN]

I had a p600b on 7psi, I was running a cheap bov from siliconintakes.com. worked great and made lots of noise. You can hear it on some sound clips of my car on youtube. Gilman822

Making you silky smooth...

[shownomercy]

I run a 60mm JGS BOV, its pretty quiet, but not much boost yet.

[96 SS 383]

ok ill check the vids out and what kind of power did you make on 7psi zohan?

[96 SS 383]

Mine is SOOOOO horrible... detailed the engine... took the car to Ocean City MD for a week of cruising...under the hood COATED in sand...

Came home, cleaned it up... went to a 4th of july car show.....entrance to the show had some powdery dirt.... DE JA VUE!


Dang im not looking forward to that at all the roads around where i live are pretty bad. o well itll be worth it..

[BIG CAT]

if you run a mondo. pull the cover off and use some rtv to glue the oring in place. they tend to fall out after some use.

[popo8]

Dang im not looking forward to that at all the roads around where i live are pretty bad. o well itll be worth it..

Just dont point it down... Lol

MEMBER @ LTXtech.com

[ZOHAN]

ok ill check the vids out and what kind of power did you make on 7psi zohan?

I was making about 550whp

Making you silky smooth...

[96 SS 383]

"I was making about 550whp

Making you silky smooth..."

Ok was that with ported factory heads? What cam was you running with your set up?

[96 SS 383]

so i did some research on the mondo and it says it requires 12psi. any input on that issue?

[popo8]

so i did some research on the mondo and it says it requires 12psi. any input on that issue?

Requires?

AT my MAX boost Im just shy of 12 lbs...

MEMBER @ LTXtech.com

[96 SS 383]

Yea it was saying on vortechs website a minimum of 12 pounds peak boost is needed. But I plan on one day upgrading the head unit and getting more psi so I think id be alright. Id rather go too big then having to buy another one down the road. Can you still hear it at low boost letting off ?

[popo8]

Yea it was saying on vortechs website a minimum of 12 pounds peak boost is needed. But I plan on one day upgrading the head unit and getting more psi so I think id be alright. Id rather go too big then having to buy another one down the road. Can you still hear it at low boost letting off ?

When the car is running its loud....between shifts in boost...it SCREAMS

MEMBER @ LTXtech.com

[96 SS 383]

Yea it was saying on vortechs website a minimum of 12 pounds peak boost is needed. But I plan on one day upgrading the head unit and getting more psi so I think id be alright. Id rather go too big then having to buy another one down the road. Can you still hear it at low boost letting off ?

When the car is running its loud....between shifts in boost...it SCREAMS

MEMBER @ LTXtech.com

Awesome! That's what I want.

[ZOHAN]

"

Ok was that with ported factory heads? What cam was you running with your set up?

It was ported lt4 heads. I was running a cc306 cam. I made such good numbers on 7psi cause I bolted the procharger onto an NA setup. I was still 11-11.5:1 compression. I wouldn't recommend it, it kinda like a time bomb. Not sure when its gonna go, but its going to at some point. Haha. I broke ring landings I believe on a couple pistons. Havent torn the motor apart. Easy fix, coulda been worse, but I just built a whole new setup instead of a bandade

Making you silky smooth...

[96 SS 383]

Lol oh k I see. I had a n/a setup I was gonna do the same and just bolt the procharger on it but decided to take my time and went ahead and forged the bottom end and get a better cam for boost. I just lack having a good set of heads. Was 7 psi all you were able to get out of the p600? I'm hoping I can get 10 out of it.

[ZOHAN]

I have ported lt4 heads, but they flow pretty well. I never changed the pully, I actually had the next size down but never put it on. 7 was plenty for my stock bottom. The cc306 cam I had isn't horrible for boost so i left it, but there's def others that are better. Having a bigger cubic inch motor could make it tough getting 10psi. That's why I got rid of it when I started my 383, not saying it won't work, I just want 15ish psi and I knew the p600 couldn't do that. Having a bigger cubic inch motor will flow air through better, so the 7psi I was getting, would have only been 5-6psi on the new motor. So you'd really have to pully it down to get 10. Again, not saying it can't happen. But even procharger was telling me I was prob maxing out that p600 as it was.

Making you silky smooth...

[96 SS 383]

Yea that's what I was afraid of when I bought the p600 I was just planning on about 5 psi because of the n/a non forged bottom end but now that its forged I'm wanting more boost but may not be able to get it. I guess ill try pullying it down and see what I can get out of it for now.

[ZOHAN]

Its worth a shot, see what it'll do. Mine surprised the crap out of everyone. Have to be careful dopping the pully too much or it could cause belt slip too. I'm sure it'll still run good either way

Making you silky smooth...

[96 SS 383]

Yea I was surprised on the power you said you made. But yea as long as it runs good id be happy if it made right at 500 to the wheels. Its just a street car not drag setup. Do you still have that size smaller pully for it?

[popo8]

Yea that's what I was afraid of when I bought the p600 I was just planning on about 5 psi because of the n/a non forged bottom end but now that its forged I'm wanting more boost but may not be able to get it. I guess ill try pullying it down and see what I can get out of it for now.

you will be suprised.. pat burton has a p600 on a stroker... it moves out!

[96 SS 383]

Yea id like to know his setup. I've seen it on you tube multiple times.

[ZOHAN]

Yea I was surprised on the power you said you made. But yea as long as it runs good id be happy if it made right at 500 to the wheels. Its just a street car not drag setup. Do you still have that size smaller pully for it?

Nope sorry, sold it with the kit. That the kids parents wouldnt allow him to put on his camaro. Haha. You can get smaller pullies from procharger though. Like $80 IIRC. I kinda wanted to try the procharger on my 383 but decided to go bigger. I don't see how you'd have any problem making 500-550whp with it still depending how low you are dropping your compression.

Making you silky smooth...

[96 SS 383]

Lol poor kid. And yea I looked at the pullies a time or two on prochargers site. And yea I feel 500 should be a realistic number also. And right now the compression is still around a 10.3 or so with my stock heads according to srp with the pistons I got.

[ZOHAN]

Heads are bone stock no porting?

Making you silky smooth...

[96 SS 383]

Yea its killing me. But there is a machine shop local where I live that said he will port them for 450 bucks. He did a set not long ago and flow benched tthem and they flowed around 270's if I remember correctly just porting no polishing. Is it worth porting the factory heads?

[Blackbird96WS6]

It's always worth porting factory heads on our LT1s. :)

[96 SS 383]

Yea true that. Any recommendations on who to port them or will a local machine shop do fine. Results all about the same?

[Blackbird96WS6]

Lloyd Elliot is the main man for LT1 head porting, IDK how well any local shops do the job by comparison. http://elliottsportworks.com/

[96 SS 383]

Yea I've looked at his stuff a few times on his site. Heard good things about his stuff.

[Still2slow]

Yea it was saying on vortechs website a minimum of 12 pounds peak boost is needed. But I plan on one day upgrading the head unit and getting more psi so I think id be alright. Id rather go too big then having to buy another one down the road. Can you still hear it at low boost letting off ?

I'm running the mondo with ~7.5 psi so you should be fine. I have it mounted behind the front bumper cover near the driver side turn signal and you can hear it if you listen for it but its definitely not loud, especially with the V-1 s trim doing its thing.

[96 SS 383]

Ok cool and id say its quiet cause of the amount of boost but yea the noise of the v1 s trim is very loud lol so Id ssay it would be hard to hear. Good to know someone is running it with around the same boost ill be running.

[ZOHAN]

Loyd is def the man. They could "all end up the same", but my heads were done by someone well known before I bought the car, and when I had them re gone through before boost, one of the intake runners was ported too deep and letting oil in. Loyd is the man and you can be sure they are good. Hes also one of the sponsors of ltxshootout, and was there hanging out in Kentucky this year drinking us under the table. Haha. Awesome guy

Making you silky smooth...

[96 SS 383]

Yea I'm gonna look into him on getting my heads done. And lol dang sounds like that was a good time. I didn't make it this year due to starting a new job 2 weeks before the shootout and didn't wanna ask off but I made the 2012 shootout and had fun.

[pat burton]

Yea that's what I was afraid of when I bought the p600 I was just planning on about 5 psi because of the n/a non forged bottom end but now that its forged I'm wanting more boost but may not be able to get it. I guess ill try pullying it down and see what I can get out of it for now.

You would be surprised what the "little" p600b can do! Its more about air flow than boost. I'm still running the dual plane intake manifold and was able to get mine into the 9's with the "little" p600b. The highest boost I saw was 12.8psi. But like I said its about air flow not boost. I am switching to a single plane intake this season to have a better flowing intake and going to push the p600 even harder. We shall see...