Converted to blow thru

[o2sys]

I converted and went with a 10% overdrive pulley at the same time and I'm seeing 15lbs at 6k rpm

What size pulley on the headunit?

I'm at stock crank with 3.33" pulley @ 10 psi.

 

[MassMustang]

What size pulley on the headunit?

I'm at stock crank with 3.33" pulley @ 10 psi.

I'm curious too. I'm wondering what I can do with a 2.87" or 2.62" pulley on my setup. I think I'd be very happy with 15/16psi.

 

[NoviBlownGT]

I made 22psi with a 3.15 pulley and 10% overdrive. Around 23-24 with a 3.0

 

[o2sys]

I made 22psi with a 3.15 pulley and 10% overdrive. Around 23-24 with a 3.0

On pump gas or E85?

 

[black N boosted]

What size pulley on the headunit?

I'm at stock crank with 3.33" pulley @ 10 psi.

I'm running the 3.25 pulley

 

[MassMustang]

Boost would be dependent on the compression ratio, correct? (assuming the same blower, same pulley and other similar items)

 

[46addict]

Boost is based on intake/exhaust restrictions (cylinder head flow), and bore size.
More static compression can add power to a boosted engine without adding boost, but adding boost without changing static compression will increase effective compression.

Short answer is, boost is not dependent on static compression.

 

[o2sys]

I'm on 302 ci with 10.5:1 CR. Completely stock heads and cams.

 

[46addict]

I converted and went with a 10% overdrive pulley at the same time and I'm seeing 15lbs at 6k rpm

And you're making 485hp on 15psi or is that an old dyno run?

 

[black N boosted]

And you're making 485hp on 15psi or is that an old dyno run?

That's the old dyno run at 10lbs of boost, I'm finishing up tuning with the man now (lito).. not sure what it makes but I can tell u it's a lot faster then before

 

[MassMustang]

Boost is based on intake/exhaust restrictions (cylinder head flow), and bore size.
More static compression can add power to a boosted engine without adding boost, but adding boost without changing static compression will increase effective compression.

Short answer is, boost is not dependent on static compression.

OK, thanks. I was dyno'ed in August at 539 rwhp and 528 torque on a Dynometer. Boost was just about 12psi. I have a 326 (3.750" stroke and 3.720" bore) and using custom pistons that are supposed to be about 9.6:1

I'm hoping to crank the boost up in a year or so using a 2.87" or 2.62" 6-rib pulley.

 

[46addict]

You might be running into belt slip issues on a <3" pulley. Are you running a stock crank pulley?

 

[MassMustang]

You might be running into belt slip issues on a <3" pulley. Are you running a stock crank pulley?

Me? I'm using a Kellogg double-keyed crank but the stock damper. So if you're suggesting an 8-rib pulley upgrade, that's probably a good idea. Extra money but most likely worth the investment. If I'm spending $300 for a good dyno tune, I may as well do it once and do it right.

 

[NoviBlownGT]

On pump gas or E85?

E85 now, I ran 93 with the 3.15 for a while.

 

[o2sys]

So you know the vband clamp & flange that comes with the Tial bov? Is there supposed to be an oring in between the BOV and the flange???

 

[01yellerCobra]

So you know the vband clamp & flange that comes with the Tial bov? Is there supposed to be an oring in between the BOV and the flange???

I never ran an o-ring in mine.

 

[black N boosted]

I never ran an o-ring in mine.

Me neither!

 

[o2sys]

So it's just metal to metal contact and the clamp seals it?

 

[black N boosted]

Looks good! I run a vortech mondo.

What size tbolt clamps are u using for the intercooler piping? The 3in or the 3.25?