At the dyno shop now.....Problems

Mustangr

Founding Member

Nov 3, 1999

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boise Id

Mar 28, 2009

#1

• Mar 28, 2009

• #1

My friends stang that is fully loaded with things like R block AFR 205 Heads mondo vortec is falling on its face at 4800 rpm. 467 hp.
We have taken off blower belt to see if it was blowing out spark, we have tried lots of timing and fuel curves we have even replaced coil.

Any Ideas????

 

bubba-dough

Active Member

Dec 28, 2004

1,044

2

38

Indiana

Mar 28, 2009

#2

• Mar 28, 2009

• #2

pegged MAF, blown headgasket (actually had this happen to us once on the dyno, cylinders were half full of coolant)...

 

blackened88lx

Active Member

Aug 9, 2006

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Connecticut

Mar 28, 2009

#3

• Mar 28, 2009

• #3

What chip is in the limiter haha. Dumber things have happened. When you say "falling on its face", is it breaking up? just not climbing any more? quitting all together?

 

Mustangr

Founding Member

Nov 3, 1999

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boise Id

Mar 29, 2009

#4

• Mar 29, 2009

• #4

We thought of the chip. we also are wondering about being corked by squirls. MMmmm

 

blackened88lx

Active Member

Aug 9, 2006

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Mar 29, 2009

#5

• Mar 29, 2009

• #5

So did you check the chip in the limiter? or just think about it...

 

Mustangr

Founding Member

Nov 3, 1999

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boise Id

Mar 29, 2009

#6

• Mar 29, 2009

• #6

yes, we did. we deleted the aftermarket box completely, we also used another coil, different computer, cannot be pegging MAF because without vortec we only made 250 hp. we are not running out of fuel cause on our dyno the A/R stayed 12:1 till 6500. we have changed timing all over the place.

We are stuck

 

S&B

I hate my CT. :(

10 Year Member

Dec 18, 2005

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Cheesehead

Mar 29, 2009

#7

• Mar 29, 2009

• #7

is the belt slipping?

I had this problem once, now i have mine strung tight like a guitar and it climbs right up to 23psi 8 rib

show us some pix of your setup

 

fiveohwblow

Official Member

15 Year Member

Jul 21, 2005

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Mar 29, 2009

#8

• Mar 29, 2009

• #8

S&B said:

is the belt slipping?

I had this problem once, now i have mine strung tight like a guitar and it climbs right up to 23psi 8 rib

show us some pix of your setup

Click to expand...

Good call s&b. Happened to me as well at 5100 until I tightened.

 

Gearbanger 101

Straight Outta Locash

20+ Year Stangneter

Aug 10, 2002

9,457

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Mar 29, 2009

#9

• Mar 29, 2009

• #9

Valve float?

What are his cam specs? Not sure what the 205's have for springs?

 

B

bentley429

Banned

Nov 25, 2004

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Connecticut

Mar 29, 2009

#10

• Mar 29, 2009

• #10

What is it using for a computer and tuning.