Black Beauty

[meissen]

i had the 160 t stat and early fans with the auto trans and 2.73s still had 14-15 MPG

That's still terrible mileage for 2.73 gears. Your speed is off anywhere from 20 to 35 percent (your numbers don't line up, but by the speeds you gave I'd say around 35%)

Agreed 100%. Red Alert with the CC503 cam and all the work done to it, 3.42 gears, still averages 14.9MPG right now... http://www.fuelly.com/driver/meissen/camaro-2 A stock LT1 with 2.73 gears should be doing better.

[jetice]

FWIW, when i had my 2.73s on a completely stock car, it only averaged 15 around town. On the highway, it got closer to 30 through.

[BP_Z28]

Re: Black Beauty

I get like avg 16-17 city for me. Lapeer is very tiny. From one side of the city to the other is basically 1-2miles away. Highway I don't believe I have ever seen over 21.

Sent from my DROID4 using Tapatalk 2

[JoeliusZ28]

Looks good! Should run better, i noticed a huge gain from 4500 up. Almost like doing headers!

Also high idle is probably a vacuum leak

[QuickTop]

Black Beauty

I have higher compression 93 tune emissions deleted longtubes and ORY dumped before axle. But 9 MPG Is bad..

As far as the vacuum leak ill have to hunt that down. Where did you put your opti vacuum line when you did your swap?

[JoeliusZ28]

I have higher compression 93 tune emissions deleted longtubes and ORY dumped before axle. But 9 MPG Is bad..

As far as the vacuum leak ill have to hunt that down. Where did you put your opti vacuum line when you did your swap?

My SLP lid had a rubber plug in the side i punched a hole in.

[Lucky SOB]

A 1993 tune on your car would ignore the MAF... 1993 cars ran speed density.

[meissen]

A 1993 tune on your car would ignore the MAF... 1993 cars ran speed density.

I think it was assumed that he meant 93 octane

[QuickTop]

Black Beauty

My SLP lid had a rubber plug in the side i punched a hole in.

In the neck area? Ill see if mine can be sealed up any better. Other than that I can't think of any other leaks. But I'll do the starting fluid test later.

[JoeliusZ28]

Nope mine was on the side of the lid above the filter

[QuickTop]

Black Beauty

Nope mine was on the side of the lid above the filter

Would the neck area be okay as far as getting the correct vacuum?

[Fox Slaughter]

EDITED

The vacuum on the opti is just for the venting isn't it?
I don't think the opti is vacuum advance like an old dizzy.

[QuickTop]

Black Beauty

EDITED

The vacuum on the opti is just for the venting isn't it?
I don't think the opti is vacuum advance like an old dizzy.

Ya know I thought about running the line into the cabin my mouth does get really bored while I drive.

But I figured it's vacuum line it probably should be hooked up.

Update: after some PCM research I learned that auto fuel table(s) are obviously extremely different from an m6 fuel tables. So basically everytime I shift the car is giving the engine enough fuel to accelerate from a dead stop in first in the auto trans.. There goes my MPGS

[Lucky SOB]

I think it was assumed that he meant 93 octane

Wasn't sure, so I thought I'd check. Could have been a simple fix

[ktl711]

Nobody knows what lid that is?

It has the same kind of grained finish that my Whisper Motorsports lid has, so I'm going to go out on a limb and say you have found yourself a Whisper lid there.

http://ls1tech.com/forums/parts-clas...isper-lid.html

http://www.whispermotorsports.com/fbody.html