Brennen's01SS

iTrader: (1)

I dont think I'd gain much either.

It's pretty much staight through

Brennen's01SS

iTrader: (1)

That's also an old pic the headers are now tsp 1 7/8 and magnaflow 5" x 13" cans instead of the loudmouth 1.

LIL SS

iTrader: (9)

Ummm, my little 347 had 3" X-pipe, and dual electric cut outs after the X before the mufflers. Picked up a solid 10-15rwhp/rwtq from 3800-4k on up.

DietCoke

iTrader: (18)

What kind of mufflers are you guys using? Look at his exhaust setup. There is no restriction.

I picked up 0hp/tq with open exhaust at the x pipe vs my full exhaust, and I'm running a LOT more engine. Of course I don't have restrictive mufflers either

87silverbullet

iTrader: (11)

It's not just his mufflers, look at the bends. Each one adds up as a restriction.

I am considering selling my true dual to the rear Borla setup so I can just run dumps.

Do you have a pic of yours?

Tweek

iTrader: (3)

Still not going to be fast enough...... JFWY bet it rolls out, you gonna let me drive it?

6D9 Matt

Just curious... what made you choose the 245's over the 235 TFS heads?

Im thinking about a 416 later this year and between the two...

ctd

iTrader: (1)

I curious as well!

Brennen's01SS

iTrader: (1)

After speaking to Geoff and tea they both advised me the 245s would be a better choice. They have more experience with them so I let them chose. If I would have built the block around the 245s the compression would have been closer to 12.1. I originally was using 61cc 243s but figured I'd be leaving alot on the table. So I contacted Geoff and made the order.

6D9 Matt

Hmmm... just when I thought I was decided on the 235's LOL. But yeah if TEA recommended the 245's that is good enough reason I would think (knowing your setup, etc). I may have to call and talk to them as well, I was thinking of going with TEA anyway.

DietCoke

iTrader: (18)

No, but its headers ---> x with 26x3" sweet thunder bullets and dumps. No bends and straight through

ctd

iTrader: (1)

I'm dealing with this very same compression issue, my 416 build was for small chamber head then a switch to a bigger head mid stream.

The individual doing up my new TF's is going to weld in the chamber in an area that does "not" affect the final flow numbers. The way it is explained to me any milling is going to hurt flows numbers as you shroud the valve in.

87silverbullet

iTrader: (11)

That's why, no bends. I do agree the mufflers do make a difference but the bends start to cause issues when there are too many of them.

Brennen's01SS

iTrader: (1)

Now that I think of it I had trouble sealing the headers. I was using oem multi layer but still having leaks. So I bought sbe copper gaskets that are a little thicker. Holding the gaskets over each other the sbe were about 3/16 to 1/4 smaller I.D. Than the oem. Would this be causing a restriction worth fixing?

87silverbullet

iTrader: (11)

Is the hole smaller than the exhaust port on the head? If not, leave it alone.

DietCoke

iTrader: (18)

Had the exhaust from the collector back off the car today to drop the tranny, took a pic. You can see the 26" powersticks pretty clearly.

Brennen's01SS

iTrader: (1)

I'm not sure if I'm in the right section, also posted in fueling and injection. About 1 week after the tune the car started acting up. First, I noticed 1 out of 5 stop and go's the throttle would have a dead spot (from 0% to 30%). It didn't bog or act like anything was happening. Second symtom was lean idle 22.5 on innovate lm1. It started to have a small miss. I started testing, I pulled the plugs and they were whitish brown, with an green tint. All grounds were checked, fuel pressure, spark, injector pulse, compression 200-210, and valve springs, I still could not find the issue.

Now it's hardly running. Afr is extemly rich. With a bad miss and it stalls now. I pulled the plugs again to change them, they were black. I installed a new crank position sensor but still it's not better.

One thing I did notice is the fuel pressure go's from 65 to 40 instantly when I prime the system. But seems to hold 65 when idleing. It has a racetronix pump with Hotwire kit. I can't seem to diagnose the problem. But it seems to be getting worse. Any help would be appreciated. I'm out of ideas! Sorry for rambling

DietCoke

iTrader: (18)

Sounds like fuel pump is going out.

red fury

iTrader: (1)

Solid numbers, we always want more....... but I am sure Geoff looked from every angle while developing your cam and tuning the whole package so I doubt there are more than a couple rwhp/twtq hiding out somewhere. Wait on some good weather and go see what mph you trap in the 1/4, thats what its all about with a "street" car if you like to play around on the street

lt1773

iTrader: (1)

Did you fix the problem ? Did you dyno it again ?